Quick Answer

A good payment reminder includes the invoice number, amount due, original due date, payment method, and a short direct request for an update or payment confirmation.

The best reminders sound calm and operational. They should not apologize for asking to be paid, but they also should not escalate too early. Start factual, keep the email short, and make it easy for the client to resolve the issue immediately.

When to Send Payment Reminders

  • 1 to 3 days before the due date as a friendly heads-up
  • On the due date if payment has not arrived
  • 3 days overdue for the first overdue reminder
  • 7 to 14 days overdue for a firmer follow-up

If the client is large or has a finance team, a reminder sent too early can be ignored. If you wait too long, the invoice may sink in the queue. The right timing is firm but predictable.

Reminder Email Templates

Due soon reminder

Subject: Invoice INV-1042 due on June 24

Hi [Client Name], just a quick reminder that invoice INV-1042 for $1,550.00 is due on June 24. I have attached the invoice again for convenience. Please let me know if you need anything from me to process payment.

First overdue reminder

Subject: Invoice INV-1042 is now overdue

Hi [Client Name], invoice INV-1042 for $1,550.00 was due on June 24 and appears to still be outstanding. I have reattached it here. Please confirm when payment is scheduled.

Firmer follow-up

Subject: Follow-up on overdue invoice INV-1042

Hi [Client Name], I am following up again on invoice INV-1042, now 14 days overdue. Please let me know the current payment status and expected payment date. If there is an issue with the invoice, reply and I will resolve it promptly.

What to Include in Every Reminder

  • Invoice number
  • Amount due
  • Original due date
  • Attached invoice or payment link
  • A direct ask: confirm payment date or raise any issue

Do not make the client search for the invoice or guess what they owe. Friction slows payment.

Mistakes to Avoid

  • Writing long emotional emails instead of short operational reminders
  • Failing to reattach the invoice
  • Using an unclear subject line with no invoice number
  • Waiting too long between follow-ups
  • Escalating aggressively on the first message

Frequently Asked Questions

Should I call the client as well as email?

If a reasonable email sequence gets no response, a short call can resolve the issue faster than additional written reminders.

Can I mention late fees in the reminder?

Yes, but only if those fees were agreed in advance and are consistent with your contract and local law.

How many reminders are too many?

There is no fixed number, but reminders should be structured and purposeful, not sent randomly. Weekly follow-up is common once an invoice is seriously overdue.

Create and Follow Up on Your Invoice

Start with a clear invoice, then use reminder language that makes follow-up efficient.