Home / 30-day overdue invoice email
Writing a 30-day overdue invoice email
Thirty days is the point where a friendly nudge stops being enough. The email should stay professional, but it needs to read as a formal notice — not just another reminder.
Why 30 days is a turning point
By 30 days overdue, a client has had the invoice, at least one earlier reminder, and a full billing cycle to pay. The email you send now should be short, unambiguous, and worth keeping on record if the matter escalates.
What to include in a 30-day notice
- The original invoice number, amount, and due date
- A plain statement that it is now 30 days overdue
- A firm new deadline for payment
- Any consequence that actually applies (late fee, pause on further work) — only if it's real
- Payment details or a pay link, so there's no reason to delay replying
Free 30-day overdue invoice email template
Use the formal 30-day notice template for the full copy-paste version, or open it on Solo/Pro to adjust tone for your exact client.
What if 30 days passes without a response?
Move to a second formal notice at 60 days, and if that also goes unanswered, the final notice before collections template sets the last deadline before you consider outside help.
FAQ
Can I charge a late fee at 30 days overdue?
Only if your original contract or invoice terms specified one. Don't introduce a new fee retroactively — mention it in the notice only if it was already agreed.
Should I involve a collections agency at 30 days?
Not yet. Thirty days is the stage for a firm, formal notice — collections is usually reserved for 60–90+ days after further notices go unanswered.
How is a 30-day notice different from earlier reminders?
Earlier reminders are conversational and assume an oversight. A 30-day notice states the facts plainly, sets a hard new deadline, and is written to be kept on file.