Friendly Payment Reminder Email Template

Most late payments aren't malicious — they're forgotten. Your first reminder should sound like a helpful nudge, not a threat. Send this 3–5 days after the due date.

Subject: Quick check-in on invoice #INV-1042

Hi [Name],

Hope you're doing well. I'm writing with a quick check-in on invoice #INV-1042 for [amount], which was due on [due date].

It may have simply slipped through the cracks — no worries at all. I've attached a copy of the invoice here for convenience.

Could you let me know when I can expect payment? Happy to help if anything on the invoice needs clarifying.

Best,
[Your name]

Why this works

It assumes good intent. "Slipped through the cracks" gives the client a graceful way to pay without admitting fault.
It re-attaches the invoice. Half the time the original email got buried. Removing friction is the fastest way to get paid.
It asks a concrete question. "When can I expect payment?" is much harder to ignore than "please pay at your convenience."

Tip: Send from the same email thread as the original invoice if you can. A reply in an existing thread feels like a continuation, not an escalation.

When to send the next one

If there's no reply or payment within a week, follow up with a firmer reminder. The tone steps up, but stays professional — you're documenting a paper trail, not starting a fight.