A past due invoice re-presents an unpaid bill with: the original invoice number and date, the original due date and days overdue, the unchanged original amount, any late fees accruing per pre-agreed terms (1–1.5%/month is standard), the new total, and clear payment instructions. Effective escalation follows a ladder — friendly reminder at 1–7 days late, a past-due notice with fees at 14–30 days, a final notice citing next steps at 45–60 days — with each notice firmer but never hostile, because the goal is the money and often the relationship too.
Past Due Invoice Template
Reviewed by the Agiled editorial teamUpdated June 2026
The hardest invoice to write is the second one — the same bill, re-sent, now carrying the awkwardness of asking again. A good past-due invoice removes the awkwardness by being pure mechanics: original invoice referenced, days overdue counted, late fee applied per terms the client already agreed to, new total stated, payment link one click away. No apology, no anger — a system doing what the paperwork said it would do. This template carries the structure and the tone, for every rung of the escalation ladder. 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 |
|---|---|---|---|
| Original invoice amount | 1 | $2,500.00 | $2,500.00 |
| Late fee | 1 | $75.00 | $75.00 |
Download this invoice template
Pick a style, choose a format, and download — generated locally in your browser.
Style
Format
Fixed layout for sending and printing
Word
Editable in Word or Google Docs
Excel
Live formulas for recurring invoices
Or create and send invoices online
Create online- References
- Original invoice #, date, due date
- Late fee
- 1 – 1.5% / month, if pre-agreed
- Ladder
- Reminder → notice → final notice
- Tone
- Firm, factual, never hostile
What to include on a past due invoice
"PAST DUE" stated plainly
A clear header — not buried in a subject line, not softened into invisibility. The document's job is to be unmistakable about what it is.
Original invoice references
Invoice number, issue date, original due date, and original amount. The past-due notice is an annotation on an existing obligation, not a new bill.
Days overdue, counted
"Originally due May 20 — now 24 days past due." The counted number does psychological work a vague 'overdue' never does.
Late fees only if pre-agreed
"Late fee per agreement (1.5%/month): $37.50." Fees invented at collection time are unenforceable and inflammatory; fees applied per signed terms are mechanics.
The new total, unambiguous
Original amount + accrued fees = amount now due. One number to pay, today.
The easiest possible payment path
Payment link, bank details, card option — friction at the payment step is the most fixable cause of continued lateness. Make paying easier than ignoring.
What happens next, when it's time
On later notices: the specific consequence and date — work paused, account suspended, referral to collections or small claims by a stated date. Specific and calm beats vague and threatening.
The standard escalation ladder
| Stage | Timing & content | Notes |
|---|---|---|
| Friendly reminder | 1 – 7 days late | Assume oversight; reattach invoice |
| First past-due notice | 14 days late | Late fee applied; days counted |
| Second notice | 30 days late | Statement of account; firmer tone |
| Phone call | 30 – 45 days | Often resolves what letters can't |
| Final notice | 45 – 60 days | Specific next step and date |
| Action | 60 – 90 days | Collections, small claims, or attorney letter |
| Late fee rate | 1 – 1.5% / month | Must be pre-agreed; state caps vary |
Late-fee enforceability and maximum rates vary by state and contract. Business-to-consumer collection communications are regulated — keep every notice factual and professional.
How past due billing actually works
The first follow-up: assume the best
Most late payments are inbox loss, vacation, or an AP hiccup — not refusal. The first reminder (a few days past due) reflects that: short, warm, invoice reattached, payment link included, no fees yet mentioned even if accruing. 'Just making sure this didn't get buried' collects a remarkable share of late invoices on its own, and costs zero relationship capital. Send it on schedule, not when frustration peaks.
The middle rungs: mechanics, not emotion
At two weeks and again at thirty days, the notice gets formal: PAST DUE header, original references, days counted, late fee applied per the agreement, new total, payment path. The tone stays factual — the late fee line itself communicates seriousness without a single adversarial sentence. Around the thirty-day mark, a phone call outperforms any letter: a two-minute conversation surfaces the real blocker (disputed line, cash crunch, lost approval) that no notice would have revealed.
The final notice and the follow-through
The final notice names the consequence and the date: 'If payment isn't received by July 15, this account will be referred to [collections / small claims court / our attorney].' Then — critically — follow through on the date named, because a final notice that wasn't final teaches the client that none of your deadlines are real. Small claims handles most freelance-and-small-business amounts cheaply; in several states, freelance-protection laws add double damages and attorney's fees. A payment plan offer on real terms (documented, scheduled) is often the best practical outcome for a struggling-but-honest client.
Invoicing mistakes that cost past due professionals money
Waiting too long to start
Collectability decays measurably with age — an invoice 90 days late collects at a fraction of face value. The ladder starts days after the due date, automatically, regardless of how awkward it feels.
Inventing late fees retroactively
Fees that weren't in the original agreement are unenforceable and convert a payment delay into a relationship dispute. If terms didn't include them, escalate without them — and fix your contract for next time.
Hostile tone
Anger in writing gives the client a reason to make you the problem. Every notice should read like it was generated by a calm system — because the client should believe it was.
Vague threats
'We may be forced to take further action' threatens nothing. Name the action and the date, and only when you're prepared to take it.
Continuing work while unpaid
Delivering new work to a client who hasn't paid for the old work funds their float with your labor. Pause at thirty days, say so plainly, and resume on payment — it's the strongest non-legal lever you hold.
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
Reference the original invoice: number, issue date, due date, and amount.
- 03
State the days overdue and apply late fees only as pre-agreed.
- 04
Show the new total and the easiest possible payment path.
- 05
Send on the ladder schedule: reminder at days 1–7, notices at 14 and 30, final notice at 45–60 with a named consequence and date.
- 06
Follow through on the named date — pause work, refer the account, or file — and document everything.
Skip this template if…
- First-time invoicing — this template re-presents an existing unpaid invoice; the original bill comes first.
- Regulated consumer-debt collection — third-party collectors are governed by the FDCPA and need compliant processes, not a template.
FAQs
What should a past due invoice say?
A clear PAST DUE header, the original invoice number, issue date, due date and amount, days now overdue, late fees applied per pre-agreed terms, the new total, and simple payment instructions. Later notices add the specific next step and its date. Factual and firm throughout — never hostile.
How long should I wait before sending a past due notice?
Send a friendly reminder within a week of the missed due date, a formal past-due notice at about 14 days, a second at 30, and a final notice at 45–60. Starting early matters more than any wording choice — collectability declines steadily with age, and a 90-day-old invoice is already deeply impaired.
Can I charge late fees on overdue invoices?
Only if they were agreed before the work — in your contract or accepted terms — and within your state's limits. 1–1.5% per month is customary. Retroactive fees invented at collection time are unenforceable and tend to escalate the dispute rather than the payment.
What tone should a past due notice take?
Calm, factual, and progressively firmer — like a system applying stated rules rather than a person getting angry. Assume oversight on the first reminder, state mechanics on the middle notices, and name specific consequences with dates on the final one. Hostility gives the debtor a counter-narrative; mechanics don't.
What if the client still doesn't pay?
Follow through on the final notice's named step: pause any ongoing work, then small claims court (cheap, effective for most small-business amounts), a collections agency (typically 25–50% contingency), or an attorney demand letter. Several states' freelance-protection laws add double damages and fee recovery. A documented payment plan is often the best outcome with a struggling-but-honest client.
Should I keep working for a client with overdue invoices?
No — pausing work at around 30 days past due, stated plainly and applied consistently, is the strongest leverage most service providers have. Continuing to deliver while unpaid signals the due dates are decorative and finances the client's float with your labor.
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