Guides 3 min read Updated January 28, 2026

How to remind clients about unpaid invoices (without sounding rude)

It’s the freelancer’s worst nightmare: you do the work, send the invoice, and then... silence.

Asking for money is uncomfortable. You don’t want to look desperate, and you certainly don’t want to annoy a client who might have just honestly forgotten. But your rent is due, and you deserve to be paid.

Here is how to handle unpaid invoices professionally, politely, and effectively.


Why clients delay payments

Before you get angry, remember that 90% of late payments aren't malicious.

  • They are busy: Your invoice is one of 50 emails they received that day.
  • Administrative friction: They need to forward it to an accountant, or get approval from a manager.
  • Cash flow: Sometimes they are waiting on their own clients to pay them.
  • They just forgot: Plain and simple.

When to send the first reminder

Don't wait until the invoice is a week late. The best practice is to send a clear schedule of reminders:

  1. 3 days before due date: A helpful "heads up".
  2. On the due date: A transactional notification.
  3. 3 days after: A polite check-in.
  4. 7 days after: A firm follow-up.

Tone: Polite but Firm

Your goal is to be helpful, not accusatory. assume positive intent. Instead of saying "You haven't paid me", try saying "I wanted to ensure this invoice didn't get lost in the shuffle."

Example: The Polite Check-in

"Hi [Name], just bumping this to the top of your box. Invoice #1024 was due on Tuesday. Let me know if you need another copy!"

Example: The Firm Nudge

"Hi [Name], I'm following up on the overdue invoice #1024. Please let me know when I can expect payment to be processed."

Why manual follow-ups fail

The problem with manual follow-ups is emotional friction. You wake up, remember you haven't been paid, and dread writing that email. You procrastinate. A day becomes a week.

By the time you finally send it, you're stressed and the payment is significantly late.

Automation removes the emotion. A tool doesn't feel awkward about asking for money. It just sends the email on schedule, politely and consistently.


Let automation handle the awkward part

You can send these reminders manually — or let Followio handle it automatically.

How to Remind Clients About Unpaid Invoices (Without Sounding Rude) - Followio