Best Invoicing Software for General Contractors: 10 Tools Ranked for 2026

A general contractor's invoice is not an invoice. It is a pay application. A $1,200,000 kitchen-addition contract does not get billed in one shot. It gets billed in 8-14 progress draws against a schedule of values, with 5-10% retainage held on every line until final completion, change orders added as continuation sheets on the AIA G703, conditional lien waivers signed for the current draw and unconditional waivers exchanged for the prior draw's cleared check, and sub payments paid on a pay-when-paid clause triggered by the owner's wire. Generic invoicing tools treat this like Stripe for a freelance web project. It is not.

This article ranks 10 billing platforms for general contractors on the workflows that actually matter: AIA G702/G703 pay applications (or a defensible substitute), retainage tracking and release, conditional and unconditional lien waivers, change order flow from approved PCO into the next draw, subcontractor pay-when-paid logic, QuickBooks sync, and mobile access when you are standing in the middle of a slab pour. Pricing was verified against vendor pricing pages in April 2026.

Quick Comparison: GC Invoicing Platforms at a Glance

Prices reflect starting tiers on vendor pricing pages as of April 2026. Procore does not publish public pricing; the figure above reflects practitioner reports for small-team packages and should be confirmed on a sales call. Buildertrend pricing moved to annual-only billing with introductory promotional rates; the numbers here are the standard (non-promo) monthly equivalents.

What Separates GC Invoicing From Generic Invoicing

Before picking a tool, understand the seven workflows a generic invoice app breaks on when a GC tries to use it.

1. AIA G702 Application and Certificate for Payment and G703 Continuation Sheet. Almost every owner, lender, architect, or commercial GC requires a pay application on AIA Document G702 with a G703 continuation sheet listing the schedule of values (SOV) by line. The G703 shows work completed this period, work completed to date, percent complete, retainage held, and balance to finish. Excel works for a one-off. A three-project GC trying to hand-key G703 continuation sheets into Excel before a 5 PM draw cutoff will eventually transpose a number on a $240,000 framing line and chase the correction for three weeks. Knowify and Procore are native on G702/G703. QuickBooks Online has progress invoicing that some small owners and lenders accept and that most commercial GCs and banks reject as non-AIA.

2. Retainage (retention) hold and release. Standard retainage in U.S. construction runs 5% to 10% of each progress draw, held back until substantial completion (and sometimes until final completion plus a punch-list cure period). Your billing tool has to calculate retainage per line on the G703, accumulate it across all draws, and issue the release draw separately at the end of the job. Some states cap retainage by statute (California is 5% on public work, Florida commonly 10%, Texas allows negotiation). Knowify, Procore, Buildertrend, and Houzz Pro handle retainage natively. QuickBooks Online requires a workaround with a "retainage receivable" sub-account and a line-item discount; CPAs can make it work, but it is not native.

3. Conditional vs. unconditional lien waivers on every draw. For each progress draw in states with mechanics' lien statutes (which is most of them), the GC typically signs a conditional waiver for the current draw (contingent on the check clearing) and exchanges an unconditional waiver for the prior period once that check has cleared. Some states have statutory waiver forms (California Civil Code sections 8132, 8134, 8136, 8138 are the four California forms). The GC also has to collect conditional and unconditional waivers from every subcontractor and lower-tier sub who could file a lien. Procore has a native lien waiver module. Knowify has conditional and unconditional templates and tracks signed waivers per draw. Buildertrend handles waivers through its document management workflow. Generic tools (Wave, Joist, Invoice Simple, FreshBooks) do not.

4. Change orders that flow from approved PCO into the next pay app. A proposed change order (PCO) gets priced and routed to the owner or GC for signature. Once signed, it becomes a change order (CO) that adds a new line to the schedule of values and shows up on the next G703 continuation sheet. The billing tool has to pull approved COs into the pay app automatically. Hand-keying signed COs into a separate billing spreadsheet is where most billing errors originate. Knowify, Procore, and Buildertrend link approved COs to the SOV. Houzz Pro tracks change orders and adds them to the progress payment schedule. QuickBooks Online requires adding a line to the estimate and re-running progress invoicing. Agiled tracks change orders on the project and regenerates the proposal/invoice but is not tied to an AIA G703.

5. Subcontractor pay-when-paid and joint checks. Most GC-sub contracts contain a pay-when-paid clause: the GC pays the sub after (or shortly after) the owner pays the GC. Enforceability varies by state (some states treat pay-when-paid as a timing clause, others push it toward pay-if-paid only with explicit language). For joint-check relationships (GC, sub, supplier all sign), billing has to track the three-party payment. Procore, Buildertrend, and Knowify support sub payment tracking tied to owner draws. QuickBooks Online handles 1099 tracking and sub payments but not the pay-when-paid contingency natively. Agiled handles sub invoices through its finance module but does not automate pay-when-paid release logic.

6. Davis-Bacon and state prevailing wage certified payroll on public work. If any of your projects are federal-funded (Davis-Bacon), state-funded (little Davis-Bacon in most states), or local prevailing-wage (PLA work), you need certified payroll reports (WH-347 federal, state-specific forms elsewhere) with fringe benefit splits, trade classifications, and job-by-job hours. Certified payroll is technically a payroll workflow, not invoicing, but it runs against the same pay app. Knowify has Davis-Bacon prevailing-wage add-ons ($79-$149/mo). Buildertrend integrates with certified payroll services. Procore has a certified payroll module in the Labor suite. Most generic invoicing tools do not.

7. QuickBooks sync (or a defensible export) and job costing. Your CPA or bookkeeper is almost certainly on QuickBooks Online or Desktop. A billing tool that cannot sync has to export CSVs the bookkeeper keys in, which introduces reconciliation errors on million-dollar jobs. Two-way sync with QuickBooks Online and Desktop exists in Knowify and Procore. Buildertrend and Houzz Pro are one-way to QBO. Agiled exports QuickBooks-compatible CSV and connects via Zapier for basic sync. On the job-costing side, you need committed cost (POs and subcontracts signed) separate from actual cost (invoices received and paid) separate from billed-to-date (pay apps sent). Knowify and Procore produce committed vs actual vs billed rollups by phase. QBO produces actual by class if you set it up; committed cost is a third-party add-on.

If you are a solo handyman-style GC doing 4-8 residential remodels a year at $20,000-$80,000 each, some of this is overkill. If you are a light-commercial GC running two tenant build-outs and a small retail renovation at $400,000-$2,000,000 each with 6-12 subs per job, almost all of it is daily work.

1. Agiled - Best All-in-One for Residential Remodelers and Small GCs

Agiled is the only tool on this list that bundles CRM, invoicing with recurring and milestone billing, proposals and contracts with e-signatures, appointment scheduling, a branded client portal, project management, and workflow automation into a single platform. For a residential remodeling GC or a 1-5 person design-build shop that is not running AIA G702/G703 every day, it replaces the tangle of separate tools (Buildertrend for project management + DocuSign for contracts + Calendly for scheduling + QuickBooks for invoicing) with one bill.

Pricing: Free plan covers CRM basics, 2 billable clients, 100 contacts, and basic invoicing and scheduling. Pro at $25/month (billed annually) adds unlimited contacts, unlimited projects, and 3 users included. Premium at $49/month adds automations, proposals, contracts, and e-signatures with 7 users included. Business at $83/month (15 users) layers in custom domain, payroll, and accounting. Additional users $5/month across all tiers. Payment processing runs through Stripe or PayPal at standard card rates (commonly 2.9% + $0.30 in the U.S.).

Why it works for residential and light-commercial GCs:

• Milestone-based progress billing - Deposit at signing, mobilization, rough framing, dry-in, mechanicals rough-in, drywall/paint, substantial completion, and final punch list. Generate the next invoice against the milestone schedule through the finance module. Not AIA G702/G703 native, but covers the draw schedule most residential owners and small commercial owners will accept.
• Proposals and contracts with e-signature - Present three-tier scope options (Good/Better/Best for a kitchen remodel, or tiered finish packages for a bathroom) through proposals and contracts, get the homeowner to sign on their phone at the kitchen counter, convert the approved proposal into the project and the draw schedule automatically.
• Retention as a manual line item - Add a "retainage held 10%" reduction line to each progress draw and a release line at final. Manual, but works for the typical residential 10% hold-to-final pattern.
• Change order workflow - Log a change order on the project, regenerate the proposal or addendum, send for e-signature, and add the signed amount to the next invoice. Not linked to an AIA G703 continuation sheet.
• Lien waiver handling - Upload state-specific conditional and unconditional waiver templates to the document library, route to signature on the client portal, and attach signed waivers to each draw's record.
• Subcontractor invoices and 1099 tracking - Receive sub invoices, tag to the job, track payment status, and produce 1099 reports at year end.
• Branded client portal - Homeowners log in to see the project schedule, approve change orders, download pay apps and lien waivers, and pay past-due draws through a Stripe or PayPal link.
• Scheduling - Online booking page for design consults and walk-through appointments with calendar sync (Google, Outlook) through appointment scheduling.
• Workflow automation - "Send draw reminder text when invoice is 3 days past due," "flag project as At Risk if change order backlog exceeds $15,000 unsigned," "create final-walkthrough task 3 days after substantial-completion checkbox."
• AI agents - Draft draw cover letters, change order descriptions, and substantial-completion notices from project notes.

Where Agiled falls short: No native AIA G702/G703 continuation sheets - if an owner, lender, or construction manager requires AIA, Knowify or Procore are the right tools. No native retainage accumulation and release workflow (manual line items instead). No committed-cost job-costing rollup (committed POs and signed subcontracts vs actuals vs billed-to-date). QuickBooks sync is CSV-export and Zapier-based rather than real-time two-way. No certified payroll for Davis-Bacon or state prevailing wage.

Best for: Residential remodeling GCs, 1-5 person design-build shops, and small light-commercial GCs ($20,000-$500,000 project size) who want invoicing, proposals, CRM, scheduling, and a client portal in one tool without paying $500/month for Buildertrend or $300/month for Knowify to get features they only partially use.

Tradeoff: You trade native AIA G702/G703 and deep committed-cost job costing for breadth - invoicing, CRM, contracts, scheduling, portal, automations - at a fraction of the price. For remodeling GCs on milestone draws with residential owners, that trade is usually the right one. For a GC taking a $2M tenant build-out with a construction manager requiring AIA, it is the wrong tool.

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Related: Best invoicing software for electricians, best invoicing software for HVAC contractors, best invoicing software for painters.

2. Knowify - Best Native AIA G702/G703 for Light-Commercial GCs

Knowify is purpose-built for commercial and residential trade contractors and small GCs who bid fixed-price work and bill owners or upstream GCs on AIA schedules. For a GC moving past one or two commercial jobs a year with an architect or construction manager in the loop, Knowify is the cleanest native AIA tool on this list.

Pricing (billed annually): Essentials at $186/month (2 users), Professional at $307/month (3 users), Enterprise custom. Additional users typically $29/month on Essentials and $39/month on Professional. Add-ons include Service Pro for dispatch, Davis-Bacon prevailing wage ($79-$149/month), and Live Equipment Tracking. 14-day free trial.

What works for GCs:

• Native AIA G702 Application and Certificate for Payment and G703 Continuation Sheet generation by line, by period, with stored and completed-to-date columns and retainage
• Retainage hold per line with release draw at substantial completion
• Conditional and unconditional lien waiver templates by state with per-draw tracking
• Change order workflow from PCO through owner signature onto the G703 as an added SOV line
• Real-time job costing with labor, material, subs, and committed cost rollups by phase (rough, mechanicals, finishes, close-out)
• Two-way QuickBooks Online and Desktop sync (the strongest QuickBooks Desktop integration on this list in 2026)
• Subcontract management with pay-when-paid tracking tied to owner draws
• Daily job logs with photos and crew time from the mobile app
• Davis-Bacon certified payroll on the prevailing wage add-on

Where it falls short: UI feels closer to construction-management software than a modern residential-friendly product. If most of your jobs are residential $40,000-$150,000 remodels with homeowners who never heard the words "schedule of values," Knowify is more tool than you need. No deep field-service dispatch board. No client portal as polished as Buildertrend's or Houzz Pro's. The $186-$307/month price tag is a real line item for a 2-3 person shop.

Best for: Light-commercial GCs and dual-side shops (residential custom + commercial tenant improvement) billing owners, construction managers, or upstream GCs on AIA G702/G703 with retainage, lien waivers, change orders, and phase-level job costing on $300,000-$5,000,000 projects.

3. Buildertrend - Best for Residential GCs Running 4-30 Active Projects

Buildertrend is the most widely adopted project-management-plus-billing platform for residential GCs and custom home builders. Billing is tightly tied to the project plan: you build a schedule of values, send draws against it, track change orders on the same project, and sync the billing to QuickBooks.

Pricing (billed annually): Essential at $499/month, Advanced at $799/month, Complete at $1,299/month. All tiers include unlimited users. Promotional rates commonly knock the first 2-3 months down to $199-$399/month depending on the campaign. 30-day money-back guarantee.

What works for GCs:

• Schedule of values (SOV) billing with draws against the SOV and percent-complete tracking
• Per-draw retention (retainage) accumulation and release
• Change order workflow from proposal through homeowner signature onto the SOV
• Document management for lien waivers, insurance COIs, subcontractor W-9s, permits, and inspections
• Client portal where homeowners approve change orders, view schedule, make selections, and pay draws online
• Subcontractor portal with bid invitations, subcontract documents, and payment status
• One-way sync to QuickBooks Online and Desktop (QuickBooks Desktop requires the Buildertrend sync tool)
• Robust mobile app for field use with offline mode
• Takeoff and estimating tools built into the platform
• Selections management tied to budget and change orders
• Real-time messaging between owner, GC, subs, and suppliers on a job-specific thread

Where it falls short: Not native AIA G702/G703. Buildertrend's SOV draw format works well for residential owners and small commercial owners but is commonly rejected by commercial construction managers and lenders who require the AIA forms. Price is the obvious objection - $499/month on the Essential plan is the highest starting point on this list outside of Procore. Accounting sync is one-way (billing flows to QuickBooks; changes in QuickBooks do not flow back). Learning curve is real: plan on 30-60 days of implementation work before the team is productive.

Best for: Residential custom home builders, high-end remodelers, and light-commercial GCs running 4-30 active projects in the $150,000-$3,000,000 range where homeowner communication, selections, and change-order volume matter as much as the billing itself.

4. Houzz Pro - Best for Design-Build GCs and Residential Remodelers

Houzz Pro is the GC and designer-focused platform from Houzz with estimating, 3D floor plans, project management, invoicing, and client communication bundled together. For a design-build GC who also lands leads from the Houzz directory, the platform doubles as a client-acquisition channel.

Pricing: Starter at $149/month, Essential at $249/month, Pro at $399/month, Ultimate at $499/month. Annual billing available with a discount. 30-day free trial.

What works for GCs:

• Progress payment schedule with milestone-based draws and deposit collection
• Change orders with homeowner approval and signature tracking
• Invoicing with Stripe-based ACH and card payments
• 3D floor plans, mood boards, and product clipping from the Houzz catalog for design-build presentations
• Takeoff and estimating tools
• Client portal with selections, schedule, invoices, and messaging
• Lead generation from the Houzz directory (included on Essential and above)
• One-way sync to QuickBooks Online

Where it falls short: Not native AIA. Retainage tracking is manual. No certified payroll. Best-fit audience is residential design-build and remodeling; commercial GCs will outgrow it quickly. Lead-generation features on the upper plans have mixed practitioner reviews depending on market saturation.

Best for: Residential design-build GCs, high-end remodelers, and interior-design-adjacent contractors who want estimating, 3D visualization, client communication, and invoicing in one platform and who pull meaningful lead volume from Houzz.

5. QuickBooks Online - Best Accounting Backbone for 1-5 Person GCs

QuickBooks Online is not purpose-built for construction billing, but it is where almost every CPA and bookkeeper wants your numbers to land. For a small GC whose accounting workflow matters more than native AIA, QuickBooks Online plus progress invoicing covers most residential and small commercial work.

Pricing: Simple Start at $38/month, Essentials at $75/month, Plus at $115/month (required for job costing with classes and locations), Advanced at $275/month (promotional discounts common for the first three months). QuickBooks Payments charges standard card rates and 1% ACH capped at $10.

Invoicing strengths:

• Progress invoicing against estimates - create a $1,200,000 estimate by line, invoice 10% at mobilization, 25% at rough framing, and so on. Some residential owners and small commercial owners accept this; most commercial construction managers reject it as non-AIA.
• Class tracking (Plus and Advanced) to run job costing by project with a P&L per class
• Customer sub-accounts for retainage receivable as a workaround
• Sales tax handling by jurisdiction (important for material pass-through and multi-county work)
• 1099 tracking for subs
• QuickBooks Payments with Apple Pay, Google Pay, card, and ACH through the invoice link
• Massive third-party add-on ecosystem (BuildSuite for AIA, Knowify as a connected app, Levelset for lien waivers, Buildertrend for project management)
• Bank feeds, reconciliation, payroll (QuickBooks Payroll), and the full accounting stack

Where it falls short: No native AIA G702/G703. No committed-cost job costing without a third-party tool (most shops layer Knowify or BuildSuite on top). No native lien waiver workflow. No change-order-to-pay-app flow beyond re-estimating. No field mobile app purpose-built for GCs. If your owner requires AIA, the answer is Knowify plus QuickBooks Online, not QuickBooks Online alone.

Best for: 1-to-5 person GCs on residential remodels and small commercial work where the owner accepts progress invoicing and the CPA or bookkeeper is already on QuickBooks. Also the default back-end when paired with Knowify, BuildSuite, or Buildertrend for AIA and project management.

6. Procore (Pay Apps) - Best for Commercial GCs Already on Procore

Procore Pay Apps (formerly Invoice Management) is Procore's billing module. For commercial GCs already on Procore for project management, RFIs, drawings, submittals, and financials, turning on Pay Apps is a natural extension. For GCs not on Procore, buying Procore just for billing is overkill.

Pricing: Procore does not publish public pricing. Practitioner reports for small teams start around $7,500/year and climb quickly for additional modules (Invoicing/Pay Apps, Financial Management, Project Management, Quality and Safety, Resource Management). Assume a 60-90 day implementation and expect annual contracts.

What works for GCs:

• Native AIA G702 and G703 generation
• Native retainage hold and release
• Native conditional and unconditional lien waiver module with state-specific templates
• Change order workflow linked to the SOV and flowed onto the next G703
• Subcontractor pay applications - subs submit pay apps through their Procore portal that roll up into the owner pay app
• Two-way sync to QuickBooks Online, QuickBooks Desktop, Sage 100 Contractor, Sage 300 CRE, and Viewpoint Spectrum
• Full project management, drawings, RFIs, submittals, daily logs, and punch list on the same platform
• Mobile app with field use and offline mode

Where it falls short: Price. Implementation complexity. Not a standalone billing tool - Procore Pay Apps assumes the rest of Procore's project management is in use. Overkill for residential or light-commercial work under $5M. Annual contract lock-in.

Best for: Commercial GCs doing $20M+ in annual revenue on Procore for project management who want the billing module on the same platform as drawings, RFIs, submittals, and financials. Not a standalone choice for small GCs.

7. FreshBooks - Best for Solo Handyman-Style GCs on Small T&M Work

FreshBooks is a generalist invoicing and time-tracking tool that fits solo handyman-style GCs and small remodelers billing time and materials on $5,000-$40,000 jobs where AIA and retainage are not in play.

Pricing: Lite at $21/month (5 billable clients), Plus at $38/month (50 billable clients), Premium at $65/month (unlimited clients), Select custom. Billable team-member seats add roughly $11/month each. 30-day free trial. Payment processing through Stripe at 2.9% + $0.30.

What works for GCs:

• Fast invoice creation from mobile
• Time tracking with hourly rates per team member - useful when you bill T&M on a remodel or sub for another GC
• Expense tracking (materials, supply-house runs, truck fuel, tool purchases)
• Proposals module for scope and price
• Recurring invoices for monthly maintenance contracts
• Late fee automation
• Strong iOS and Android apps

Where it falls short: No AIA, no retainage, no lien waivers, no change-order-to-pay-app flow, no committed cost, no subcontract management. The moment you land anything bigger than a handyman remodel or sub-contract for another GC on a commercial job, FreshBooks is a wrong tool.

Best for: Solo handyman-style GCs, 1-person remodeling operations on T&M, and GCs who also do their own mixed-trade repair work and want fast mobile invoicing.

8. Joist - Best Mobile Estimating and Invoicing for Solo Remodelers

Joist is a mobile-first estimate-and-invoice app aimed at solo trade contractors and handyman GCs who quote on-site and invoice from a phone. For a solo remodeling GC scoping a deck rebuild in the backyard and emailing the estimate before leaving the driveway, Joist is fast.

Pricing (billed annually): Basics at $10/month (5 documents/month), Pro at $16/month (unlimited documents and clients, photo attachments, line items, work orders), Elite at $32/month (business reporting, change orders, advanced line-item organization). Joist Payments at standard card rates. Wisetack consumer financing across paid tiers.

What works for small GCs:

• Fast mobile estimate-to-invoice flow with photos and signature capture on Pro and Elite
• Deposit collection at quote acceptance - useful for remodels requiring material deposits
• Wisetack financing built into estimates for whole-home renovations, deck builds, and kitchen/bath remodels
• Client history tied to property address
• QuickBooks sync on paid tiers

Where it falls short: No AIA, no retainage, no lien waivers, no committed cost, no schedule of values, no subcontract management. Elite tier adds change orders but not AIA. Strictly small residential remodels. Not a business-management platform.

Best for: Solo remodelers, handyman GCs, and small residential operators who need fast phone-based estimating and invoicing with consumer financing baked in.

9. Invoice Simple - Best Free Mobile Invoicing for Small Cash Jobs

Invoice Simple is a zero-subscription mobile invoicing app that sends PDF invoices, accepts card payments through Stripe or PayPal, and produces a clean record without a lot of feature overhead. For a side-hustle remodeler on cash or check jobs, it is the lowest-friction way to look professional.

Pricing: Free with limits on invoice volume, PDF watermark removed on paid tiers. Premium at $9.99/month for unlimited invoices, recurring invoices, and advanced reporting.

What works for small GCs:

• Fast mobile PDF invoice creation
• Stripe and PayPal payment links
• Receipt scanning for expense tracking
• Recurring invoices on the paid tier
• Clean PDF output the customer forwards to their bookkeeper

Where it falls short: No AIA, no retainage, no lien waivers, no change orders, no schedule of values, no subcontract management, no job costing, no QuickBooks sync beyond manual CSV. Strictly a "send an invoice and get paid" tool. Any job involving an owner's bank, an architect, or a construction manager is out of scope.

Best for: Side-hustle remodelers, handyman GCs on cash and check jobs under $10,000, and small operators who need a professional-looking invoice without a subscription.

10. Zoho Invoice - Best Free Invoicing With Multi-Currency

Zoho Invoice is genuinely free and has been since Zoho removed the price tag in 2022. For a bootstrapped GC with small international property management clients, a cross-border remodel, or a seasonal side project, it is the most feature-dense free tool on this list.

Pricing: Free forever for unlimited invoices, contacts, and users. Zoho Books (the full accounting tool) starts at roughly $20/month with deeper reporting and bank feeds.

What works for GCs:

• Unlimited invoices and unlimited customers free
• Multi-currency billing
• Recurring invoices for monthly maintenance or project retainers
• Payment reminders and late fees
• Client portal for commercial customers
• Stripe, Authorize.net, and PayPal payment processing
• Zoho Books upgrade path for full accounting without switching tools

Where it falls short: No AIA, no retainage, no lien waivers, no native construction workflow. Best used as a pure invoicing layer on top of whatever project management tool you already run.

Best for: Solo GCs, bootstrapped remodelers, and 1-2 person shops who want zero-subscription invoicing with multi-currency and recurring billing and who do not need AIA or retainage.

Cost-Per-Pay-Application Analysis: What a 3-Project GC Actually Spends

Subscription cost is the sticker price. Payment processing and bookkeeping time are the hidden costs. For a 2-3 person residential GC running 3 active projects averaging $450,000 each (so roughly $1.35M in simultaneous contract value) and sending 8-12 progress draws per project per year, the real annual cost is the subscription plus the processing fees on what actually comes in by card or ACH plus the bookkeeping hours to reconcile.

Assumptions: 3-project residential GC, $1.35M active contract value, 30 progress draws per year, average draw $45,000, 20% paid by card (2.9% + $0.30), 65% paid by ACH (1% capped at $10), 15% paid by check or wire. Annual billing where available.

Three takeaways from the math.

First, processing fees are not the dominant cost here the way they are for a residential service trade. On $1.35M of contract value paid mostly by ACH, your processor fees are roughly $8,000/year. On a small residential service shop pushing 65% of a smaller total volume through card at 2.9% + $0.30, processing fees dwarf subscription. GCs benefit from ACH because draw sizes are large enough that the 1% ACH cap of $10 is a rounding error on a $45,000 wire.

Second, pushing draws to ACH is the single biggest lever. A $45,000 draw paid by card at 2.9% + $0.30 is $1,305.30 in processing. The same $45,000 paid by ACH at 1% capped at $10 is $10. Per draw, that is $1,295 of margin. Across 30 draws a year, pushing 20% of volume from card to ACH saves roughly $7,800. Most owners will accept ACH on request if the GC includes ACH instructions on the pay app and offers it as the default payment method.

Third, Agiled Premium at $588/year lands within $172 of FreshBooks and $592 of QuickBooks Online Plus on total annual cost, and includes CRM, proposals with e-sign, scheduling, client portal, and automation. The subscription buys several tools you would otherwise pay $1,200-$2,000/year for separately. For a residential remodeling GC who does not need AIA, it is the strongest dollar-for-dollar bundle on this list.

Original Field Test: Cycle Time on a $900,000 Kitchen Addition Draw

We mapped the draw-to-deposit cycle across four tools on the same hypothetical residential job: a $900,000 kitchen, primary suite, and rear addition for a private homeowner with owner financing (no lender, no construction manager, no AIA requirement). Contract is structured in 9 draws at substantial completion milestones with 10% retainage held to final.

The punchline. For a private-pay residential owner on milestone draws, the fastest cycle is the tool with client-portal approval plus ACH payment on the same platform (Agiled or Buildertrend). The AIA route through Knowify adds 2-4 days of review time because the owner has to read and sign a formal AIA G702 package. The old QuickBooks-plus-mailed-check pattern adds 7-14 days of check float on every draw. Across 9 draws in a year, moving from mailed check to ACH saves 63-126 days of working capital. On a $900,000 contract with 10% retainage, that is the difference between funding payroll from cash flow and funding it from a line of credit.

How to Choose: A Practical Decision Guide

• Solo remodeler on $5,000-$40,000 T&M jobs: FreshBooks Lite ($21/mo) or Joist Pro ($16/mo). Mobile-first, fast invoice, Wisetack financing optional.
• Side-hustle remodeler on cash jobs: Invoice Simple or Zoho Invoice free. Zero subscription, clean PDF, Stripe payment link.
• Residential remodeling GC or 1-5 person design-build on milestone draws: Agiled ($25-$83/mo). Replaces 3-4 separate subscriptions with one bill.
• Residential custom home builder or high-end remodeler running 4-30 active projects: Buildertrend ($499+/mo). Project management + billing + client portal + subcontractor workflow in one platform.
• Design-build GC pulling leads from Houzz: Houzz Pro ($149-$399/mo). Estimating, 3D visualization, client portal, and lead gen in one.
• Light-commercial GC billing owners or upstream GCs on AIA: Knowify ($186-$307/mo). Native G702/G703, retainage, conditional/unconditional lien waivers, committed cost.
• Commercial GC already on Procore for project management: Procore Pay Apps. Not a standalone choice.
• 1-to-5 person GC whose CPA is already on QuickBooks: QuickBooks Online Plus ($115/mo) with progress invoicing, possibly paired with Knowify or BuildSuite if AIA is required.

One rule that saves money. If the owner (or the owner's bank) requires AIA G702/G703, do not try to fake it with QuickBooks progress invoicing plus a PDF template. Use Knowify or Procore. The hours you save and the re-work you avoid when the construction manager kicks back a non-conforming pay app will pay for Knowify in the first two draws.

When an Invoicing Tool Is the Wrong Tool

Not every GC needs to buy invoicing software beyond what they already have. Push back before you sign.

• You run 1 project at a time and it is a $30,000 kitchen. Invoice Simple, Zoho Invoice, or Agiled's free plan is enough. A $500/month tool on one job at a time is a line item the project cannot justify.
• You sub for one other GC. You are billing one entity on their pay-app schedule. Their system tracks you; you need Excel, a bank login, and a clean W-9.
• You do 100% new-construction tract work as a turnkey GC with a volume builder. The builder's payment system drives the workflow. You are on their portal, on their schedule, on their pay-app template.
• Your shop is 100% cash and check with handwritten receipts. The IRS disagrees with this philosophy but the software choice is beside the point. Fix the books first, pick a tool second.
• Your team will not open the app. The most expensive tool is the one you subscribe to but never use. If your PMs and superintendents will not adopt a mobile app, QuickBooks Online plus email-delivered PDFs beats a $500/month tool your team ignores.

Features That Separate GC Invoicing From Generic Invoicing

Native AIA G702 Application and G703 Continuation Sheet. Any project with an owner's bank, an architect, a construction manager, or an upstream GC will require AIA. Knowify and Procore native, Buildertrend and Houzz Pro approximated via SOV draws, QuickBooks Online progress invoicing is non-AIA.

Retainage accumulation by line and release at substantial completion. Standard retainage runs 5-10% per draw held to final. Native support in Knowify, Procore, Buildertrend. Manual line-item workaround in Agiled, QBO, Houzz Pro.

Conditional vs unconditional lien waiver workflow. Conditional waiver for the current draw, unconditional waiver for the prior period once the check cleared. Per-sub waivers collected from every lien-claimant. Native in Procore and Knowify, document workflow in Buildertrend and Agiled, third-party add-on (Levelset) for QuickBooks Online.

Change order flow from approved PCO into the next pay app. A signed CO adds a line to the SOV and shows up on the next G703. Native in Knowify and Procore. SOV-linked in Buildertrend. Proposal regeneration in Agiled. Estimate re-run in QBO.

Subcontractor pay-when-paid tracking. Pay the sub after the owner pays the GC. Native tracking in Procore, Buildertrend, Knowify. Manual in Agiled and QBO.

Committed cost vs actual vs billed-to-date. PO and subcontract signed (committed), invoice received (actual), pay app sent (billed). Native in Knowify and Procore. Not native anywhere else on this list without a third-party add-on.

Davis-Bacon certified payroll. Federal-funded, state-funded, or local prevailing-wage jobs require WH-347 or state-equivalent certified payroll. Native in Knowify (add-on) and Procore (Labor suite). Third-party elsewhere.

The 2026 Reality: Pay Apps Are the Product, Not the Invoice

Every tool on this list can send a PDF that says "invoice" at the top. What separates them in 2026 is the full pay-application package the owner or construction manager expects: AIA G702 cover, G703 continuation sheet with schedule of values, current-period and to-date columns, retainage held per line, signed conditional lien waiver, subcontractor waivers attached, change orders incorporated, and photos or inspection reports referenced. A tool that sends a $45,000 PDF titled "Invoice #7" to a commercial construction manager will get the package kicked back with a note to resubmit on AIA.

For residential private-pay owners, the bar is lower: a clean PDF with milestones, change orders, retention, and an ACH link usually closes the draw in 1-3 days. For commercial work, the bar is an AIA G702/G703 package with lien waivers attached. Pick the tool that matches the highest bar your pipeline contains in the next 12 months, not the lowest bar you are hitting today.

Frequently Asked Questions

What is the best invoicing software for a small general contractor?

For a 1-to-5 person GC on residential remodels and small light-commercial work, three options cover 90% of cases. Agiled at $25-$83/month bundles invoicing, proposals with e-sign, CRM, client portal, scheduling, and milestone billing - a strong fit for residential remodeling GCs not required to bill on AIA. QuickBooks Online Plus at $115/month with progress invoicing covers small GCs whose bookkeeper is already on QBO. Knowify Essentials at $186/month is the right pick the moment an owner or construction manager requires AIA G702/G703.

Does QuickBooks Online work for AIA billing?

Not natively. QuickBooks Online has progress invoicing against estimates that some small residential owners and small commercial owners will accept, but it does not produce AIA G702 Applications for Payment or G703 Continuation Sheets in the format commercial construction managers and banks expect. For AIA, most shops layer Knowify or BuildSuite on top of QuickBooks Online rather than trying to hand-build an AIA package from a QBO progress invoice.

How do I handle retainage on a construction invoice?

Retainage is a withholding of 5-10% on each progress draw held back until substantial completion (and sometimes until final punch-list completion plus a cure period). On an AIA G703, retainage is calculated per line of the schedule of values and totaled on the G702. Knowify, Procore, and Buildertrend handle retainage accumulation and release natively. In QuickBooks Online, the common workaround is a sub-customer "retainage receivable" account and a line-item discount on each progress invoice - defensible but not native. In Agiled, retention is added as a manual reduction line on each draw and a release line at final.

What is a lien waiver and do I need one on every draw?

A lien waiver is a document in which a GC, subcontractor, or supplier gives up the right to file a mechanics' lien on the property in exchange for payment. On a typical project, the GC signs a conditional waiver for the current draw (contingent on the check clearing) and exchanges an unconditional waiver for the prior period once that check has cleared. The GC also collects waivers from every subcontractor and lower-tier supplier who could file a lien. States vary on waiver forms and enforceability - California has four statutory forms (Civil Code sections 8132, 8134, 8136, 8138); other states accept general forms. Procore has a native lien waiver module, Knowify tracks waivers per draw with conditional and unconditional templates, and Levelset (a third-party) integrates with QuickBooks Online for shops that want lien waiver workflow without leaving QBO.

How do I bill change orders on a progress draw?

Approved change orders add a line to the schedule of values (SOV). On an AIA G703 continuation sheet, approved COs show as additional SOV rows with scheduled value, work completed this period, and percent complete. Knowify, Procore, and Buildertrend pull approved COs onto the next draw automatically. In QuickBooks Online, the workflow is to add a line to the estimate, re-run progress invoicing, and note the CO reference on the draw. In Agiled, log the CO on the project, regenerate the proposal addendum, get it e-signed, and add the signed amount to the next milestone invoice.

What is the cheapest invoicing software for a general contractor?

For genuinely zero-subscription invoicing, Agiled's free plan, Zoho Invoice, and Invoice Simple's free tier all send unlimited invoices and accept card or ACH payments through Stripe or PayPal. None of them handle AIA, retainage, or lien waivers - for that, the cheapest starting point is QuickBooks Online Plus at $115/month plus a third-party AIA add-on or Knowify Essentials at $186/month with AIA, retainage, and lien waivers native.

Can I collect ACH payments on a construction pay app?

Yes, and you should. Most billing tools on this list (Agiled via Stripe, QuickBooks Online via QB Payments, Knowify via Stripe, Buildertrend and Houzz Pro via their native processors, Procore via Procore Pay) accept ACH on progress draws. ACH at 1% capped at $10 is dramatically cheaper than card at 2.9% + $0.30 on any draw over $1,000 - and on a $45,000 draw, the savings is about $1,295 per draw. Push owners to ACH as the default payment method in the contract and include ACH routing instructions on every draw.

What billing software do commercial general contractors actually use?

Commercial GCs doing $20M+ in annual revenue are overwhelmingly on either Procore (for project management plus Pay Apps) or Sage 100 Contractor / Sage 300 CRE / Viewpoint Spectrum (construction-specific ERP) with a pay app module. For light-commercial GCs in the $2M-$20M range, Knowify is the most common purpose-built billing tool. For residential GCs, the pattern is Buildertrend or Houzz Pro plus QuickBooks Online.

Can I use invoicing software for Davis-Bacon certified payroll?

Certified payroll is a payroll workflow, not an invoicing workflow, but it runs against the same projects and pay apps on public work. On federal-funded projects, the WH-347 is the standard certified payroll form. Knowify has a Davis-Bacon prevailing-wage add-on ($79-$149/month). Procore has a certified payroll module in the Labor suite. On QuickBooks, the common stack is QuickBooks Payroll plus a third-party prevailing-wage tool (Points North LCP Tracker, eMars, Construction Monitor). If your pipeline has any public-work, plan the certified payroll workflow before you start the project, not after the first draw.

Do I need a client portal on my invoicing software?

For residential private-pay owners on $100,000+ projects, yes. A client portal where the homeowner can view the schedule, approve change orders, see the budget, and pay draws online reduces phone calls, email chains, and "can you send that invoice again?" back-and-forth by 40-60%. Buildertrend, Houzz Pro, Agiled, and Procore all have client portals. FreshBooks and Joist have basic client views. Invoice Simple, Zoho Invoice, and QuickBooks Online have partial portal functionality. For commercial work where the owner is a construction manager or a corporate real estate group, the portal matters less because the owner is on their own system.

The Bottom Line

For residential remodeling GCs and 1-5 person design-build shops on milestone draws, Agiled is the strongest value - it replaces invoicing, proposals with e-sign, CRM, client portal, and scheduling with one subscription starting at $0/month. For residential custom builders and high-end remodelers running 4-30 active projects, Buildertrend ($499+/month) is the mature project-management-plus-billing platform with the deepest client portal and selections workflow. For light-commercial GCs billing owners or construction managers on AIA G702/G703 with retainage, lien waivers, change orders on the continuation sheet, and committed-cost job costing, Knowify ($186+/month) is the cleanest native AIA tool on this list. Commercial GCs on Procore for project management add Pay Apps; commercial GCs not on Procore do not buy Procore just for billing. Solo remodelers on small T&M work fit FreshBooks, Joist, or Invoice Simple. QuickBooks Online is the accounting backbone almost everyone pairs with whichever field tool they pick.

The right billing tool is the one that matches the highest bar your pipeline contains in the next 12 months. If any project in your sales funnel will require AIA, pick a tool with native AIA now instead of retrofitting later. If every project in your pipeline is a private-pay residential milestone draw, do not buy Knowify or Procore for features you will never use. Start with a free trial or free tier, run your next 3 pay apps through it, and measure two things: time from draw submission to owner approval and time from approval to cleared payment. If those two numbers shrink versus your current workflow, you have found your platform.

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