Sending an invoice is the easy part. Getting paid on time sometimes takes a nudge. Most late payments are not bad faith: the invoice landed in the wrong inbox, it is waiting for someone's approval, or it simply got forgotten.
A clear, polite follow-up process solves most of those cases without damaging the relationship. Here is a simple one you can reuse.
Before you chase: check your own invoice
Before sending a reminder, make sure the problem is not on your side. Confirm that:
- The invoice went to the right person, ideally the one who approves or pays bills.
- It has a clear invoice number, issue date, and due date.
- The total and payment instructions (bank details, payment link, or accepted methods) are correct.
- Any reference the client asked for, such as a purchase order number, is included.
If something was missing, send a corrected invoice with a short apology instead of a reminder. Our guide on how to write an invoice covers what to include.
Step 1: A friendly reminder around the due date
Keep the first reminder light. Assume it was an oversight.
Subject: Invoice INV-001 due on [date]
Hi [Name],
Just a quick reminder that invoice INV-001 for [amount] is due on [date]. I've attached a copy for convenience.
You can pay by [payment method]. Let me know if you need anything else from me to process it.
Thanks,
[Your name]
Step 2: A follow-up once it is overdue
If the due date passes with no payment and no reply, follow up a few days later. Stay polite, but be specific.
Subject: Overdue: invoice INV-001
Hi [Name],
I haven't seen payment for invoice INV-001 ([amount]), which was due on [date]. Could you let me know when I can expect it?
If there's a problem with the invoice, just tell me and I'll sort it out. A copy is attached.
Thanks,
[Your name]
Asking a direct question ("when can I expect it?") tends to get a reply, which gives you something concrete to work with.
Step 3: Pick up the phone
If email has not worked, call. A short conversation often uncovers the real reason, such as an approval stuck with a manager or a supplier form you have not filled in. Write down what you agreed and confirm it by email afterward.
Step 4: A final notice
If the invoice is still unpaid, send a final written notice that states the amount, the original due date, the reminders you have already sent, and what you will do next.
Subject: Final notice: invoice INV-001
Hi [Name],
Invoice INV-001 for [amount] was due on [date]. I've followed up on [dates] and haven't received payment.
Please arrange payment by [new date]. If I don't hear from you by then, I'll [next step, for example: pause work on the project / apply the late fee in our agreement / pursue recovery].
Thanks,
[Your name]
Only mention a step you are actually prepared to take, and only one that your agreement and local law allow.
If it still isn't paid
At this point your options depend on where you are and how much is owed. They can include a formal demand letter, a collection agency, or a small-claims process. Some countries also have late-payment rules for business-to-business sales. In the UK, for example, businesses can claim interest and debt recovery costs on late commercial payments. For anything beyond a reminder, check the rules that apply to you or ask a local professional.
Make the next invoice easier to collect
A few habits reduce how often you need to chase at all:
- Agree payment terms before you start and put them on the quote and the invoice. See invoice payment terms explained.
- Show an exact due date, not just "Net 30", so there is no doubt about when payment is due.
- Ask for a deposit on larger jobs. Read how to invoice a deposit.
- Invoice promptly when the work is done, while it is fresh for the client.
- Keep reminders consistent, so clients learn that you follow up.
You can create a clean PDF invoice with the due date, payment terms, and payment instructions in the free invoice generator.