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Payment reminder email generator

Fill in the invoice details to get ready-to-send reminder emails — or let AI write one in your tone and language.

Free · No sign-up · AI-powered

 

AI email writer

Writes a fresh, personalised email in the tone and language you choose. You can edit it before sending.

Tone

🔒 Privacy: when you use the AI button, the text you enter is sent to our AI provider to generate the result. BillKit does not store it.

Payment reminder templates

Three proven templates, one for each stage. They fill in automatically from the details above — copy one or open it in your email app.

Friendly

Friendly reminder: invoice [invoice number] is due

Hi [Client name],

I hope you’re well. Just a quick reminder that invoice [invoice number] for [amount] was due on [due date].

If you’ve already sent the payment, please ignore this message — and thank you!

Best regards,
[Your name]
Open in email app

Firm

Overdue: invoice [invoice number] ([amount])

Hello [Client name],

Our records show that invoice [invoice number] for [amount], due on [due date], is still unpaid.

If there is a problem with the invoice, let me know and we’ll sort it out. Otherwise, please confirm when payment has been made.

Kind regards,
[Your name]
Open in email app

Final notice

Final notice: invoice [invoice number] is overdue

Dear [Client name],

Despite previous reminders, invoice [invoice number] for [amount], due on [due date], remains unpaid.

If payment is not received by then, I will apply late-payment charges as set out in our terms and take further steps to recover the debt.

If you have already paid, please send me the payment details so I can update our records.

Regards,
[Your name]
Open in email app

How it works

  1. Enter the client, invoice number, amount and due date — the days overdue are calculated for you.
  2. The three templates update instantly. Pick the one that fits: friendly around the due date, firm after a week or two, final notice after 30 days or more.
  3. Want something more personal? Choose a tone and language, click “Write with AI”, then edit the result and send it from your own email.

Frequently asked questions

When should I send a payment reminder?

Many businesses send a friendly note on or just after the due date, a firmer reminder 7–14 days later, and a final notice after about 30 days. Being consistent matters more than the exact timing.

How do I write a polite payment reminder?

Keep it short and factual: mention the invoice number, amount and due date, make paying easy with a link or bank details, and assume good faith — the client may simply have missed it.

What should a final notice include?

The outstanding amount, the original due date, a clear deadline for payment and the next steps you will take — for example late-payment interest or a collection agency — as allowed by your contract and local law.

Is the AI writer free?

Yes, with a daily limit. BillKit Pro includes more AI uses. The templates on this page are always free and work without AI.

What happens to the details I enter?

The templates are filled in your browser. Only when you click the AI button are the details sent to our AI provider to write the email; BillKit does not store them.

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Results are estimates for general information only and are not tax, legal or financial advice.