Chasing a late payment is uncomfortable, but it is a normal part of running a business. A calm, consistent follow-up routine gets most invoices paid without damaging the relationship.

First, check you did your part

Before you chase, confirm the basics: the invoice reached the right person, it shows the correct amount, it has a due date and payment details, and nothing about it is disputed. Many "late" invoices are simply stuck in someone's inbox.

A simple follow-up schedule

  • A few days before the due date: a friendly reminder (optional, but useful for new clients).
  • The day after the due date: a short, polite note with the invoice attached again.
  • 7 days late: a firmer email, plus a phone call if you have a number.
  • 14–30 days late: a formal reminder mentioning the late fee, if your terms include one.
  • 30+ days late: a final notice stating what happens next.

Email templates

Friendly reminder (due soon)

Subject: Invoice INV-0042 is due on [date]
Hi [Name], just a quick reminder that invoice INV-0042 for [amount] is due on [date]. The invoice is attached again for convenience, and payment details are at the bottom. Let me know if you need anything from me. Thanks!

First follow-up (1 day late)

Subject: Invoice INV-0042 – payment overdue
Hi [Name], I noticed invoice INV-0042 for [amount], due on [date], has not been paid yet. It may have crossed in the post, so I have attached a copy. Could you let me know when I can expect payment? Thank you.

Second follow-up (7+ days late)

Subject: Second reminder – invoice INV-0042 is [x] days overdue
Hi [Name], I am following up on invoice INV-0042 for [amount], now [x] days past due. Please can you confirm the payment date, or tell me if there is a problem with the invoice? If it helps, I am happy to talk by phone.

Final notice (30+ days late)

Subject: Final notice – invoice INV-0042
Hi [Name], invoice INV-0042 for [amount] is now [x] days overdue. Under the terms we agreed, a late fee of [fee] applies. Please arrange payment by [date] to avoid further action. I would much prefer to resolve this directly.

Late fees: use them carefully

A late fee only works if it was agreed in advance, so state it on the invoice and in your contract. Many US states limit the interest you can charge, so check your local rules. Work out the exact figure with the late fee calculator, then decide whether to enforce or waive it for good clients.

If they dispute the invoice

Ask what the problem is and fix it quickly. If the amount was wrong, issue a credit note and a corrected invoice. Keep the whole conversation in writing so you have a record.

When to escalate

If reminders fail, you can pause further work, send a formal demand letter, use a collections service or, for smaller amounts, consider small claims court. Rules and limits differ by state, so get proper advice before taking legal steps.

Prevent late payments next time

  • Agree terms in writing and ask for a deposit from new clients.
  • Send invoices the day work finishes.
  • Put the exact due date on every invoice (use the due date calculator).
  • Make paying easy: include a payment link or clear bank details.

More ideas in how to write an invoice that gets paid faster.

Frequently asked questions

How soon should I follow up on a late invoice?

The day after the due date is fine. A prompt, polite note shows you track your invoices.

Should I stop working for a client who has not paid?

Often yes, politely. Pausing new work until the balance is cleared is a common and reasonable step if your contract allows it.

Is this legal advice?

No. It is general information, and collection rules vary by state.

Keep a record of what you sent in My documents, and create your next invoice with the invoice generator.