How to Follow Up on an Unpaid Invoice: Email Scripts for Day 7, 14, 30, 60

An unpaid invoice isn’t usually a dispute. It’s usually the client’s AP team forgot, or the invoice landed in the wrong inbox, or the approver is on vacation, or someone clicked “approved” but never hit the “pay” button. 82% of late invoices resolve at the first follow-up email. Another 12% resolve at the second. The remaining 6% need escalation.

This post gives you exactly what to send at each stage: day 7 after due date, day 14, day 30, day 60, and the rare day 90+ scenario. Every script is copy-paste ready. Every one assumes you did the basics right — invoice number in the subject line, clear line items, stated payment terms, sent to the billing email.

The cadence that works

Before the scripts, the schedule. Here’s the timing that recovers the most invoices with the least relationship damage:

• Day 1 after due date: Short, factual reminder. Probably just forgot.
• Day 7 overdue: Firmer, references the terms.
• Day 14 overdue: Formal past-due notice, late fee applied.
• Day 30 overdue: Final notice before escalation.
• Day 60 overdue: Collection decision — small claims, agency, or write-off.
• Day 90+: Legal action or write-off.

Most freelancers wait too long on the first reminder and then escalate too fast later. The pattern that works is fast first reminder, patient middle stages, firm escalation endpoint.

Script 1 — Day 1 reminder (probably just forgot)

Subject: Invoice INV-0142 — due yesterday — $2,400

Hi Taylor,

Quick note that invoice INV-0142 ($2,400) was due yesterday and I haven’t seen the payment land yet. Almost certainly just an AP timing thing — could you check where it’s sitting in your system?

Thanks, — Sarah

Why it works. The tone acknowledges it’s probably not the client’s fault (“almost certainly just an AP timing thing”). The ask is concrete (“could you check where it’s sitting”). There’s no apology, no “hope all is well”, no awkward framing. It reads as professional and genuinely helpful.

What happens next: in ~40% of cases, the client responds the same day with a payment confirmation or an ETA. In ~35% of cases, they forward the email to AP and payment arrives within 3–5 days without any further response. The rest move to script 2.

Script 2 — Day 7 reminder (firmer, referencing terms)

Subject: Invoice INV-0142 — now 7 days past due — $2,400

Hi Taylor,

Following up on invoice INV-0142 ($2,400), which is now 7 days past its April 20 due date. I haven’t seen a confirmation or payment come through.

Could you loop in whoever processes AP on your side, or let me know if the invoice got stuck somewhere? Per the terms stated on the invoice, a 1.5% monthly late fee begins accruing at day 15.

Happy to resend the PDF if needed — the original is also attached to this email for reference.

Thanks, — Sarah

Why it works. States the facts (7 days past due, $2,400 unpaid, no confirmation). Asks a concrete action (“loop in AP”). Previews the late fee without applying it yet (“begins accruing at day 15”). Offers to help (“happy to resend”). Reattaches the PDF — this is the step most people skip, and it’s the single biggest accelerator at this stage because clients can forward the email to AP with nothing to retrieve.

The line “begins accruing at day 15” is load-bearing. It tells the client there’s a specific, upcoming consequence — not an abstract “eventually we’ll charge you more.” Deadlines clients can visualize get action; vague threats don’t.

Script 3 — Day 14 past-due notice (formal, late fee applied)

Subject: Past-due notice — Invoice INV-0142 — $2,436 (late fee applied)

Hi Taylor,

Invoice INV-0142, dated April 6, for $2,400, was due April 20 and is now 14 days past due. Per the payment terms stated on the original invoice, a 1.5% monthly late fee has now been applied, bringing the total owed to $2,436.

This is a formal past-due notice. I’d like to resolve this without escalation — could you confirm a payment date by end of this week (Friday, May 5) or put me in direct contact with your accounts payable team so we can work out the timing together?

Attached is the updated invoice with the late fee line added. Happy to send a fresh PDF if the original has been lost or deleted on your side.

Thanks, — Sarah

Why it works. Tone shifts from “friendly nudge” to “formal notice” — the phrase “this is a formal past-due notice” is the signal that the conversation is now serious. The late fee is applied, not just threatened. A specific deadline is set (“Friday, May 5”). A clear alternative is offered (“or put me in direct contact with AP”). The tone is still cooperative — “I’d like to resolve this without escalation” — but the framing no longer assumes good faith on timing.

Crucial: regenerate the invoice PDF with a new line showing the late fee, and attach it to this email. Do not just say the late fee exists — show it on the document. A client who can forward an updated PDF to AP gets the invoice processed; a client who has to manually calculate the late fee rarely bothers.

Script 4 — Day 30 final notice before escalation

Subject: Final notice — Invoice INV-0142 — $2,472 — requires response by [date]

Taylor,

Invoice INV-0142, originally $2,400 due April 20, is now 30 days past due. Including the 1.5% monthly late fee, the outstanding balance is $2,472.

I’ve sent three prior emails (April 21, April 27, May 4) and have not received a payment confirmation or a clear response. This is a final notice before I escalate the collection.

I need one of the following by end of day on Friday, May 19:

1. Payment in full ($2,472) — via bank transfer, Zelle, or any of the methods listed on the original invoice, OR
2. A written payment schedule — at minimum a concrete date by which the balance will be paid in full

If I do not hear from you by May 19, I will begin the collection process, which may include filing in small claims court, sending the account to a collections agency, or retaining a lawyer. None of these are preferable for either of us, and I would much rather resolve this directly.

Please respond at your earliest convenience.

— Sarah Mitchell Freelance Writing sarah@sarahmitchell.com

Why it works. The tone drops “Hi Taylor” in favor of just “Taylor” — a deliberate signal that the relationship is now formal. The history of prior contact attempts is listed (this is your paper trail for small claims court). The demand is specific: payment in full OR a written payment schedule. The escalation options are named but not chosen (“may include”). A hard deadline is set.

Do not send this email unless you’re willing to follow through. If the client doesn’t respond by May 19 and you don’t escalate, every future past-due email from you becomes a bluff. Once you name small claims court as an option, you have to be prepared to file if the client ignores you.

Script 5 — Day 60 (escalation decision)

At 60 days overdue with no response, you’re at a decision point. The options:

1. File in small claims court. Best for amounts under your state’s small claims limit (usually $5,000–$10,000) where you have clear evidence of work delivered.
2. Send to a collections agency. They typically take 25–40% of recovered funds. Only worth it for larger amounts ($5,000+) where you don’t want to handle the case yourself.
3. Retain a lawyer. Only worth it for amounts above $10,000 — legal fees eat smaller recoveries.
4. Write it off. Sometimes the right call. A $400 unpaid invoice isn’t worth 6 hours of emotional energy. Move on, note the client as non-payer, refuse future work from them.

There’s no universal right answer — it depends on the amount, the evidence, and your appetite for conflict. What’s not an option is another polite reminder email. The client has had 60 days and multiple escalation warnings. They’re not going to pay because you asked more nicely.

The one follow-up email you should NEVER send

“Hey! Just circling back on that invoice 🙂 I know things get busy — totally no rush, just wanted to check in whenever you have a sec!”

Three emojis, no specifics, apologetic framing, no deadline. This email gets ignored 100% of the time. It reads as permission to keep ignoring you. Don’t send this. The templates above will feel uncomfortably firm at first; they work because they’re firm.

How to avoid this whole situation

The best time to deal with late invoices is before you send the first one. Five habits that prevent most collection problems:

1. Get the billing email upfront. Before you send the first invoice, ask: “Who handles AP on your side, and what’s the best email to send invoices to?” This alone eliminates 40% of late payments.

2. State late fees on every invoice. Not in a contract the client lost — on the invoice PDF itself. A visible, specific late fee changes behavior.

3. Take deposits for first-time clients. 25–50% upfront for any new client over $1,000. If they refuse to pay a deposit, they’ll refuse to pay the invoice.

4. Use short payment terms. Net 14 for most work, Net 15 for retainers. Net 30 is fine for enterprise clients who insist, but it becomes Net 45 in practice. More on this in net 30 vs net 60 vs net 90: which to use.

5. Track everything. Know which invoices are outstanding at all times. The freelancers who get paid fastest are the ones who notice a late invoice within 24 hours — not 2 weeks later.

Outside the US?

• UK: The Late Payment of Commercial Debts Act entitles you to charge interest (currently 8% above the Bank of England base rate) plus a fixed sum (£40 for debts under £1,000, £70 for £1,000–£10,000, £100 for over £10,000) on late B2B invoices. You don’t need a late fee clause in your invoice — these apply by statute. Mentioning them explicitly on the invoice speeds payment.
• EU: The EU Late Payment Directive gives B2B creditors the right to charge interest at 8% above the ECB reference rate, plus a minimum €40 recovery cost, on late invoices. Enforceable by default across the union.
• Australia: There’s no federal late payment statute, but contract-based late fees are enforceable if stated on the invoice.
• Canada: Late fees are enforceable if stated on the original invoice; not statutory.

Open a clean invoice

If you’re dealing with a past-due situation, the fastest way to send the updated invoice (with a late fee line) is to open the original, add the line, and download a fresh PDF. The editor below lets you do it in about 30 seconds.