Payment Reminder Email: 5 Polite Templates That Get You Paid

A payment reminder email is a short, polite message that tells a client an invoice is due soon or has passed its due date, and asks them to pay. The best reminders quote the invoice number, the amount and the due date, attach a copy of the invoice and make paying easy. Send the first one a few days before the due date and keep each follow up friendly, clear and brief.

Why payment reminder emails work

Most late invoices are not late because the client refuses to pay. They are late because the invoice got buried in an inbox, went to the wrong person, or is waiting for someone to approve it. A reminder puts your invoice back at the top of the pile.

A good reminder also protects the relationship. You are not accusing anyone of anything. You are simply giving them the details they need to pay, in one place, so it takes them a minute rather than a search through old emails.

What to include in every payment reminder

Keep the email short, but make sure it answers every question the client might have before they can pay:

• A clear subject line with the invoice number and due date, so it is easy to find later.
• The invoice number and the date it was sent.
• The amount due, including the currency.
• The due date, or how many days overdue it is.
• How to pay: bank details, a payment link or the methods you accept.
• A copy of the invoice attached as a PDF.
• Your name and contact details in case there is a question or a problem.

If your invoice already shows all of this clearly, the email can stay very short. See what to include on an invoice to make sure nothing is missing.

When to send payment reminders

A simple schedule keeps you consistent and saves you from deciding each time. Here is a common pattern many freelancers and small businesses use. Adjust it to your own payment terms.

When	Reminder	Tone
3 to 5 days before the due date	Friendly heads up	Light and helpful
On the due date	Due today reminder	Polite and clear
7 days overdue	First overdue reminder	Polite but direct
14 to 21 days overdue	Second overdue reminder	Firm, ask for a payment date
30 days overdue	Final notice	Formal, explain next steps

If a client tells you there is a problem with the invoice, stop the schedule and sort it out first. Reminders only help when the invoice itself is correct.

Payment reminder email templates you can copy

Copy any of these, replace the details in brackets and send. They work for clients in the US, the UK and elsewhere.

1. Friendly reminder before the due date

2. Due today reminder

3. First overdue reminder

4. Second overdue reminder

5. Final notice

Only mention consequences you are prepared to follow through on and that your contract or local law allows.

How to write a good subject line

The subject line decides whether your reminder is opened and whether it can be found later. Put the invoice number first, then the key fact: the due date, the amount or how overdue it is. For example:

• Invoice INV 0042 due on 14 December 2026
• Reminder: invoice INV 0042 for £850.00
• Overdue: invoice INV 0042, 14 days past due

Avoid vague subjects such as "Quick question" or "Checking in". They are easy to ignore and hard to search for.

Tips for reminders that get paid

1. Reply in the same thread. Sending your reminder as a reply to the original invoice email keeps the history together.
2. Always attach the invoice. Do not make the client hunt for it. Attach the PDF every time.
3. Write to the right person. In larger companies, accounts payable may pay invoices, not the person who hired you. Ask who to copy in.
4. Ask a direct question. "When can I expect payment?" gets a reply more often than "Just checking in".
5. Stay polite. Even on a final notice, keep the tone calm and professional. You may want to work with this client again.
6. Call if email fails. After two unanswered emails, a short phone call often gets a faster answer.
7. Keep a record. Note the dates you sent each reminder. This helps if you ever need to escalate.

Late fees and interest

You can mention late fees in a reminder, but only if they were agreed before the work started, for example in your contract or the terms and conditions on your invoice. Adding a surprise fee in a reminder usually causes an argument rather than a payment.

The rules differ by country. In the UK, businesses can usually claim statutory interest and a fixed recovery charge on late payments from other businesses. Our guide to late payment interest in the UK explains how it works. In the US, late fee rules vary by state, so check local rules or speak to an accountant or lawyer before you add charges.

Make reminders easier with good invoice tracking

Reminders only work if you know which invoices are due. The free InvoiceGeneratorKit invoice generator lets you mark invoices as paid or unpaid, and it shows overdue invoices in History, so you can see at a glance who needs a reminder. You can download a fresh PDF of any invoice to attach to your email.

InvoiceGeneratorKit does not send emails for you, so copy one of the templates above into your own email account and attach the PDF.

If a client still has not paid after your final notice, read our full guide on how to chase an unpaid invoice for the next steps.

Frequently asked questions

How do you politely remind someone to pay an invoice?

Send a short email that quotes the invoice number, amount and due date, attach a copy of the invoice and explain how to pay. Keep the tone friendly and assume it was an oversight.

When should I send a payment reminder email?

Many businesses send a friendly reminder a few days before the due date, another on the due date, and then follow ups at around 7, 14 and 30 days overdue.

What should the subject line of a payment reminder say?

Put the invoice number first, then the due date, the amount or how overdue it is, for example "Overdue: invoice INV 0042 for £850.00". This makes it easy to open and to find later.

Can I add a late fee in a payment reminder?

Only if the fee was agreed before the work started, for example in your contract or invoice terms. Rules differ by country and state, so check local rules first.