15 invoice reminder and late payment templates, from friendly to firm

A late invoice is usually a forgotten invoice, and the right message gets it paid without a fight. The templates below run from the invoice itself to the last written notice, in the order a customer would receive them. Square brackets mark what to fill in. Write the amount as the exact dollar figure from the invoice. For the full routine behind these messages, including the call and the last resorts, read how to collect unpaid invoices. If you want the sequence to send itself and stop the moment a payment lands, that is a job for a custom CRM.

1. The invoice email

Send it the day the work is done, so the job is fresh in the customer's mind.

Subject: Invoice [number] for your [service] on [date]
Hi [first name],
Thanks for having us out on [date]. Your invoice for [amount] is attached, due [due date]. You can pay by card here: [link]
If anything looks off, reply to this email and I'll sort it out.
[Your name], Example Services Co., (555) 010-4410

Notes: the subject line names the job and date, which helps the customer find it later. Keep this a plain invoice email, with no offers added. The FTC's CAN-SPAM guide treats email that facilitates a transaction the customer already agreed to as transactional, but reads that category narrowly, and a message that mixes in a promotion can be treated as commercial.

2. The invoice text

For customers who agreed to receive texts when they booked.

Hi [first name], Example Services here. Invoice for [amount] is ready: [link] Thanks for your business. Reply STOP to opt out

Notes: send it during normal daytime hours. The federal 8 a.m. to 9 p.m. window in 47 CFR 64.1200(c) is written for telephone solicitations, but it is a sensible habit for every message. Use a short link on your own domain so the text stays under 160 characters.

3. The heads-up before the due date

Useful for larger jobs and commercial accounts, where a reminder two or three days ahead gets the invoice into the next payment run.

Hi [first name], invoice [number] ([amount]) is due [due date]. Pay here: [link] Questions? Call (555) 010-4410. Reply STOP to opt out

Notes: skip this one for small jobs paid at completion. Add it only when the due date is more than a week out.

4. The due-today nudge

Short and warm. Many customers pay as soon as they see it, so put the link where a thumb can reach it.

Hi [first name], friendly reminder that your [amount] invoice is due today. Pay in one tap: [link] Thank you. Reply STOP to opt out

Notes: change the wording to your voice, but keep the tone neutral. Nothing in this message suggests the customer did anything wrong, and a text that blames a customer who already paid by check costs you goodwill. Send it in the morning.

5. The first email, a few days late

Assume it slipped through. This email still gives the customer an easy way to say there is a problem.

Subject: Invoice [number] from [date], quick check
Hi [first name],
I'm following up on invoice [number] for [amount], which was due [due date]. It may have slipped past you. Here is the pay link: [link]
If something about the job wasn't right, tell me and I'll make it right.
Thanks, [your name], (555) 010-4410

Notes: the second paragraph matters. Some unpaid invoices are complaints that nobody voiced. Send this on day three to five after the due date.

6. The text, a week late

Hi [first name], [your name] at Example Services. Invoice [number] ([amount]) is a week past due: [link] Reply STOP to opt out

Notes: this is where you stop the automatic emails and let a person decide what comes next. If the customer replied STOP, honor it. Federal rules treat that reply as revoking consent for texts and require you to stop within ten business days; switch to email and phone.

7. The voicemail

A phone call usually reveals the reason for the delay. If no one answers, leave a short, neutral voicemail.

"Hi [first name], this is [your name] from Example Services at (555) 010-4410. I'm calling about your recent service. Please call me back when you get a chance. Thanks."

Notes: keep the amount and the word "invoice" out of voicemail and out of messages left with a family member or coworker. Other people may hear it, and a private matter belongs between you and the customer.

8. The reply when the customer says they are unhappy

When the answer to your reminder is a complaint, handle it as one before you ask again for money.

Hi [first name], thanks for telling me. Sorry the [part of the job] wasn't right. I can come look on [day]. Once it's fixed, we'll go over the invoice.

Notes: do not offer a discount you have not decided to give. Pause automated reminders while the issue is open, then restart from the first reminder once it is settled. Our guide on handling customer complaints covers the visit.

9. The firmer email, two weeks late

Subject: Invoice [number] is two weeks past due
Hi [first name],
Invoice [number] for [amount] for the [service] on [date] is now two weeks past due. I've tried to reach you by text and phone.
Please pay by [date] using this link: [link]. If you can't pay in full, call me so we can set up a payment plan.
[Your name], Example Services Co., (555) 010-4410

Notes: it says what you tried, names one date and offers an option. It does not mention what happens next, so you are not locked into anything yet.

10. The payment plan offer

Getting paid in three payments beats chasing the full amount for months.

Hi [first name], as we discussed: [amount] on [date], [date] and [date], by card on file. Reply AGREE and I'll set it up. Reply STOP to opt out

Notes: get the customer's written agreement, and a card on file for automatic charges (see card on file and autopay). State what happens if a payment is missed, such as the full balance coming due, and only if your original terms allow it.

11. The late fee notice

Use it only if your signed quote or terms included a late fee before the work started.

Subject: Late fee on invoice [number]
Hi [first name],
Per the terms you approved on [date], a late fee of [amount] has been added to invoice [number]. The new balance is [amount]. Pay by [date] here: [link]
[Your name], Example Services Co.

Notes: rules on late fees and required disclosures vary by state. Check yours, and do not add a fee that was not in the agreement.

12. The final notice before further action

Send it by email and by mail with tracking, after the call has failed.

Subject: Final notice: invoice [number]
Dear [first name],
On [date] we completed [service] at [address]. Invoice [number] for [amount] was due [due date] and remains unpaid. We have contacted you on [dates] by [methods].
Please pay in full by [date]: [link] or call (555) 010-4410. If we do not receive payment or hear from you by then, we will [a step you intend to take and may lawfully take, such as pausing scheduled service].
The invoice and approved quote are attached.
[Your name], [title], Example Services Co.

Notes: list only a step you plan to take and have the right to take. Do not mention a lien unless you have lien rights and have followed your state's notice rules (see mechanics liens explained), and do not threaten legal action you will not file. Keep a copy of everything you send.

13. The email to a business customer's accounts payable

Slow commercial payments are often stuck in someone's inbox, not refused.

Subject: Invoice [number], PO [number], status request
Hello,
I'm checking on invoice [number] for [amount] for work completed at [site] on [date], due [due date]. Could you confirm it was received and approved, and tell me the expected payment date?
If anything is missing, such as a PO number, W-9 or certificate of insurance, tell me what you need and I'll send it today.
[Your name], Example Services Co., (555) 010-4410

Notes: ask for a date, not for money. Address the accounts payable contact directly and copy your site contact. Rules and terms for business customers differ from those for households, so use your agreed payment terms.

14. The card on file did not go through

Hi [first name], your card ending [last 4] didn't go through for [amount]. Update it here: [link] Reply STOP to opt out

Notes: a declined card is a technical problem most of the time, from an expired card or a bank flag. Send this the same day. Only ever include the last four digits and never the full number. Repeated failed charges should lead to a phone call, not a stack of messages.

15. The thank-you after payment

This message closes the loop and shuts off every reminder that follows.

Thanks, [first name]. We received your [amount] payment for invoice [number]. Receipt is in your email. Reply STOP to opt out

Notes: make sure your system marks the invoice paid before any scheduled reminder goes out. Nothing annoys a paid customer like a collection message. If you want to ask for a review next, send that as a separate message on another day.

Where to start

You do not need fifteen templates in place on day one. Set up these three first:

1. Template 1 and 2, the invoice with a pay link. A link that works on a phone prevents most late payments.
2. Template 5, the first email after the due date. It catches the forgetful customers and the quiet complaints.
3. Template 12, the final notice. Write it once with a lawyer's review so you are not drafting it angry later.

Then add the others as you meet the cases. Schedule the sequence in your software so it runs the same way for every customer, and read the full collection guide for the phone call and what to do after the final notice.

Frequently asked questions