How to follow up on unpaid invoices

Assume it’s an oversight first

Most late invoices are lost in an inbox, waiting on an approval, or forgotten. Start friendly. You can always get firmer later, but you can’t take back a sharp first message from a customer you want to keep. Keep every message short, specific and easy to act on, and the customer will usually answer the same day.

A reminder timeline

• A few days before the due date: a short heads-up with the payment link.
• On the due date: “Your invoice is due today.”
• 3 days late: a friendly nudge, in case it was missed.
• 7 days late: a firmer note asking for a payment date.
• 14 days late: call them. A voice is harder to ignore than email.
• 30 days late: a final notice that says what you will do next.

Adjust the gaps to your terms. For due on receipt jobs, shorten everything. Every message should include the invoice number, amount, due date and a way to pay in one click.

Three messages you can copy

A firmer follow-up

A final notice

Stay factual. Don’t threaten, and don’t name steps you aren’t ready to take. What you can do next, such as a collection agency or small claims court, depends on your state and the size of the bill. Ask a lawyer or your local court’s guide before you rely on any of it.

What to do when the customer goes quiet

If emails and texts go unanswered, change channel. Call during the day, or send a short text that links straight to the invoice. Ask a direct question, such as “Can you pay by Friday?”, because a question gets an answer more often than a statement.

With business customers, ask who handles payables. The person who hired you is often not the person who pays, and an invoice can sit in the wrong inbox for weeks.

Before you send the first reminder

Check the basics: was the invoice sent to the right address, and did it open? Is the amount right? Did the customer ever see the due date? A minute spent on this stops you from sending a sharp message about a bill that never arrived. If the invoice was wrong, fix it and send a clean copy made with the free invoice generator.

Keep it easy to answer

• Reply on the same channel the customer uses.
• Attach the invoice again, so nobody has to dig for it.
• Offer a payment plan on a big balance. Part now beats nothing later.
• Keep a note of each contact and date.
• Stop reminders the moment payment arrives.

Better still, prevent most of this with a deposit and a clear due date. Paylark is opening soon and sends reminders on this kind of schedule for you, then stops when the invoice is paid.