How to write a polite payment reminder to a client

Most late invoices are not refusals. They are missed emails, a finance team waiting on an approval, or a payment that was scheduled and never ran. A calm first reminder is usually enough.

Keep each message about one invoice, with the number, the amount and the due date, so the client can find it in seconds. Add a payment link if you have one.

Customise this email

What to include, and what to leave out

Include

The invoice number, amount and the date it was due, stated plainly.
A payment link or the bank details if you normally send them, so paying takes one step.
A line that invites the client to tell you if something is wrong with the invoice.
A "if you've already paid, thank you" line in the early reminders.

Leave out

Late fees, penalties, legal action or collection threats. This page and the tool do not write those, and they are not legal advice.
Guilt or sarcasm. A polite email that is easy to forward to a finance team works better.
Sending reminders without checking your records for a payment first.

Three versions to copy

Same situation, three tones. Start with the calm one and move to the next only if you need to. The names, dates and amounts are examples; swap in your own below.

Calm

Subject: Invoice 114 for the Northside website

Hi Dana,

Checking in again on the Northside website. A friendly reminder that invoice 114 ($1,200) was due on Sat 3 Oct. It's easy to miss in a busy inbox. You can pay it here: https://pay.example.com/inv/114

If you've already paid, thank you. If something is holding it up, reply and let me know.

Thanks,
Sam

Clear

Subject: Invoice 114 ($1,200) is still open

Hi Dana,

Checking in again on the Northside website. Invoice 114 ($1,200) was due on Sat 3 Oct and is still open on my side. You can pay it here: https://pay.example.com/inv/114

If there's a question about the invoice or a payment process I should know about, reply and I'll sort it out with you.

Thanks,
Sam

Firm but polite

Subject: Invoice 114 for the Northside website remains unpaid

Hi Dana,

Checking in again on the Northside website. Invoice 114 ($1,200) was due on Sat 3 Oct and remains unpaid. Work is paused until it's settled, and I'll resume as soon as payment arrives. Payment link: https://pay.example.com/inv/114

If something has changed or you'd like to talk it through, please reply and let me know.

Thanks,
Sam

This version mentions pausing work. Keep that line only if it's true and covered by your agreement.

How often to follow up

A pattern many freelancers use. Every business and client differs, so adjust it.

01A few days before it is due. An optional heads-up with the invoice attached.
02On the due date. A calm reminder with the payment link.
03About 3 and 7 days after. The clear version, asking if anything is holding it up.
04About 14 days after. The firm but polite version: state what happens next, without threats.
05After that, roughly weekly for a short while. Then call, and check your contract before doing anything else.