Interior design invoices bill two distinct streams: design fees (hourly $100–$300, flat per room $1,500–$7,500, or percentage of project budget 10–30%) and procurement — furnishings purchased at trade pricing and sold to the client at the disclosed markup or at retail-equivalent (cost-plus 20–35% is standard). Procurement bills proposals first (client approves and pays before ordering), then invoices reconcile deliveries; freight, receiving/warehousing, and installation bill as their own lines. Phase payments follow design milestones, with balances due before installation day.
Interior Designer Invoice Template
Reviewed by the Agiled editorial teamUpdated June 2026
Interior design billing is two businesses wearing one brand: a professional-services practice selling design time, and a retail operation buying at trade and selling at markup. The firms that stay profitable keep the streams separate on paper — design fees on their own lines, procurement run proposal-first (approved and paid before anything is ordered), markups disclosed at the policy level, and freight/receiving/install billed for what they actually cost. This template carries both streams and the phase-payment structure that connects them. Download it in PDF, Word, Excel, Google Docs, or Google Sheets, or generate a pre-filled version below.
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Your Company Name
123 Business St, City, State 12345
billing@yourcompany.com
INVOICE
INV-0001
Bill to
Client Company
Due
Net 30
| Description | Qty | Rate | Amount |
|---|---|---|---|
| Design consultation | 4 | $200.00 | $800.00 |
| Space planning | 1 | $1,500.00 | $1,500.00 |
| Material sourcing | 1 | $500.00 | $500.00 |
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Create online- Design fees
- $100 – $300 / hr or flat per room
- Cost-plus markup
- 20 – 35% over trade
- Procurement
- Proposal paid before ordering
- Install balance
- Due before installation day
What to include on a interior designer invoice
Design fees as their own stream
"Design development — primary suite — 18 hrs @ $165" or "Flat design fee, phase 2 of 3 — $2,500." Never blended into product pricing — blending is how design time becomes free.
Procurement lines per item
"Verellen sofa, COM upholstery — $6,840" with vendor, specs, and lead time referenced from the approved proposal. One line per piece; the proposal number ties it together.
Markup policy disclosed
Cost-plus engagement letters state the percentage; retail-model firms state that pricing is retail-equivalent. What kills relationships isn't markup — it's markup discovered.
Proposals before invoices
Procurement runs on approved, paid proposals (100% or 75% deposit before ordering is standard — custom goods are non-returnable). Invoices then reconcile deliveries against proposals.
Freight, receiving, and warehousing
Inbound freight, receiving inspection, warehouse storage until install — real costs, billed as labeled lines or a disclosed percentage. Silent absorption here erodes the whole project's margin.
Installation day billed
Install crew, art hanging, styling — itemized, with the project balance due before installation. The reveal happens after the money clears, not before.
Phase and payment schedule visible
Concept → design development → procurement → install, with each invoice naming its phase and showing paid/remaining against the schedule.
Typical interior design pricing (U.S., 2026)
| Item | Typical range | Notes |
|---|---|---|
| Hourly design fee | $100 – $300 | Principal rates higher |
| Flat fee per room | $1,500 – $7,500 | Scope-dependent |
| Percentage of budget | 10 – 30% | Full-service projects |
| Cost-plus markup on furnishings | 20 – 35% over trade | Disclosed in engagement letter |
| Procurement deposit | 75 – 100% before ordering | Custom goods non-returnable |
| Receiving & warehousing | $50 – $150 / item or 3 – 5% | |
| Installation day (crew) | $500 – $2,500 / day | |
| E-design (per room, remote) | $300 – $1,500 | Concept + shopping list |
Models vary — hourly, flat, percentage, and cost-plus are commonly combined. The engagement letter's pricing-model language governs; invoices should mirror it exactly.
How interior designer billing actually works
Full-service projects: the phase arc
Full-service work bills in phases: a design fee deposit at signing, concept and design development invoiced as completed (hourly or flat per phase), then procurement on approved proposals — each proposal paid before ordering, because custom upholstery and casegoods are non-returnable. The final stretch invoices receiving, install day, and any balance, due before the install. Each invoice names its phase and shows the running paid/remaining picture, which is what keeps a six-month project's money conversation calm.
Procurement mechanics: proposal, order, reconcile
The procurement cycle that protects everyone: itemized proposal (piece, specs, price, lead time) → client approval and payment → order placed → invoice reconciles delivery against the proposal, with freight and receiving added as incurred. Substitutions and price changes from vendors go back through proposal revision, never silently absorbed or silently passed through. Damage claims and reselections get their own documented lines — the paper trail is what makes a 40-item project reconcilable at the end.
Smaller engagements: hourly, e-design, and consultations
Consultation-only work bills hourly ($100–$300) invoiced monthly or per session, with purchase recommendations the client executes at retail on their own. E-design bills flat per room, paid up front, with the deliverable (concept boards, floor plan, clickable shopping list) defined on the invoice. These models trade procurement margin for simplicity — the invoice's job is just clean time/deliverable billing with scope boundaries stated.
Invoicing mistakes that cost interior designer professionals money
Ordering before payment
A custom sofa ordered on a verbal yes is your sofa if the client wobbles. Proposal approved and paid, then ordered — no exceptions for custom goods.
Hidden markup
Clients who discover undisclosed margins feel scammed even when the pricing was fair. Disclose the model — cost-plus percentage or retail-equivalent — in the engagement letter and let invoices mirror it.
Absorbing freight and receiving
Twenty deliveries of inspection, storage, and damage handling is real labor and warehouse money. Bill it as labeled lines or a disclosed percentage — silently eating it costs more than most design fees earn.
Design time bleeding into procurement
When sourcing hours hide inside product markup, scope creep in either stream becomes invisible. Two streams, two line types, tracked separately.
Revealing before reconciling
Install-day reveals before the balance clears convert your leverage into a hope. Balance due before installation — it's the industry standard because it works.
How to use this template
- 01
Download the template in your preferred format, or generate a pre-filled version with the download studio above.
- 02
Add your firm details and the project/phase reference.
- 03
Bill design fees on their own lines — hourly, flat, or percentage per the engagement letter.
- 04
Run procurement proposal-first: approved and paid before ordering, then invoice deliveries against proposals.
- 05
Bill freight, receiving, warehousing, and install day as labeled lines.
- 06
Show the phase payment schedule with paid/remaining, and collect the balance before installation.
Skip this template if…
- Architects — phase-fee billing against construction cost runs on the architecture template.
- Home stagers — inventory rental and per-month staging fees follow a rental billing structure.
FAQs
How do interior designers charge?
Through combinations of: hourly fees ($100–$300), flat fees per room ($1,500–$7,500), a percentage of project budget (10–30%), and cost-plus procurement (furnishings at trade price plus a disclosed 20–35% markup). The engagement letter defines the mix; invoices should mirror it exactly.
What is cost-plus pricing in interior design?
The designer buys furnishings at trade discount and sells them to the client at cost plus a disclosed markup (typically 20–35%). The client often still pays at or below retail while the markup funds the sourcing, ordering, and management work. Disclosure in the engagement letter is what keeps the model trust-building rather than trust-destroying.
What's the difference between a proposal and an invoice in design procurement?
The proposal itemizes pieces (specs, price, lead time) for client approval and payment before anything is ordered — critical because custom goods are non-returnable. The invoice comes later, reconciling actual deliveries against the approved proposal and adding freight and receiving as incurred.
Why do designers require payment before ordering furniture?
Custom upholstery, casegoods, and to-the-trade items generally can't be returned — an ordered piece is committed money. 75–100% payment on the approved proposal before ordering is standard practice and protects the designer from carrying non-returnable inventory on a client's behalf.
What are receiving and warehousing charges?
The cost of accepting deliveries at a warehouse, inspecting for damage, filing freight claims, and storing pieces until installation day — billed per item ($50–$150) or as 3–5% of furnishings. It's real labor and space; firms that absorb it silently give away margin the design fee was never meant to cover.
When is the final payment due on a design project?
Before installation day. The industry standard is that all furnishings balances and remaining fees clear before the install and reveal — the designer's leverage and the client's excitement both peak at the same moment, and the standard keeps that moment uncomplicated.
Pair it with the interior design contract template
Invoices collect; contracts protect. Get the matching agreement in Word or PDF — free, like this template.
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