AI Payment Reminder Email Drafter

A payment reminder is a professional follow-up message sent to a client when an invoice is past due. Describe your situation below and get 3 ready-to-send emails — gentle, firm, and final notice.

Try an example:

Subject: Quick check-in on Invoice #[NUMBER]

Hi [CLIENT NAME],

I hope you're doing well! I wanted to follow up on Invoice #[NUMBER] for [AMOUNT], which was due on [DUE DATE].

I understand things can get busy, so this is just a friendly reminder. If the payment is already on its way, please disregard this message.

If you have any questions about the invoice or need to discuss the payment timeline, I'm happy to chat.

Best regards,
[YOUR NAME]

How to Follow Up on Unpaid Invoices

A payment reminder email is a professional message sent to a client when an invoice is overdue. Following up on late payments is one of the most uncomfortable parts of running a business, but a professional, well-timed reminder can make the difference between getting paid and writing off the debt. According to Xero's research, businesses that follow up within 7 days of the due date get paid 2x faster. The FreshBooks payment reminder guide confirms that structured, escalating reminders are the most effective approach.

  1. Day 1 after due date: Send a gentle reminder assuming the best — the client may have simply forgotten.
  2. Day 7: Follow up with a firm but professional reminder including the original invoice details and payment instructions.
  3. Day 14: Send a more serious notice mentioning your late fee policy and requesting immediate action.
  4. Day 30: Issue a final notice with a clear deadline and mention of potential next steps (collections, legal action).

What to Include in a Payment Reminder Email

Every payment reminder should include these essential elements to be effective:

  • Invoice number and date — so the client can locate the invoice quickly
  • Amount owed — the exact balance due, including any late fees
  • Original due date — establishes how overdue the payment is
  • Payment instructions — bank details, payment link, or accepted methods
  • A clear call to action — tell them exactly what you need them to do and by when
  • Professional tone — firm but respectful; preserve the relationship where possible

Calculate Your Late Fee

If your invoice is overdue and you have a late fee clause, use our late fee calculator to determine the exact amount of interest owed. Need help setting up payment terms that prevent late payments in the first place? Read our guide to invoice payment terms. For a complete playbook on dealing with non-paying clients, see our late payment guide.

Frequently Asked Questions

How many payment reminders should I send?

Send 3-4 reminders before escalating to formal collection. Start gentle (Day 1), escalate to firm (Day 7-14), then send a final notice (Day 30) with a clear deadline. Most invoices get paid within the first two reminders.

What is the best time to send a payment reminder?

Tuesday through Thursday mornings between 9-11 AM in the client's time zone tend to get the highest response rates. Avoid Mondays (inbox overload) and Fridays (weekend mindset).

Should I charge a late fee?

If your contract includes a late fee clause, yes. Late fees incentivize timely payment and compensate you for the cost of delayed cash flow. Use our late fee calculator to determine the appropriate amount.

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