Invoice Reminder Email Templates (Copy-Paste Ready)
Ten proven email templates for chasing overdue invoices — from gentle first reminder to firm final notice. With subject lines, word-for-word copy, and notes on when to use each one.
Writing invoice reminder emails is awkward. You need to be firm enough to get paid, but not so pushy that you damage the client relationship.
These 10 templates cover every stage of invoice follow-up — from a friendly nudge on day 3 to a final collection notice. Copy and customize them, or let Chaser send them automatically.
🕐 Quick note on timing
Research by FreshBooks shows invoices are most likely to be paid within 48 hours of the reminder. The sweet spot for a first reminder is 3–5 days after the due date.
Template 1: Friendly First Reminder (Day 3–5)
Use this when: It's been a few days, assume good faith.
Subject:
Quick reminder — Invoice #[NUMBER] due [DATE]
Hi [CLIENT NAME],
Just a quick reminder that Invoice #[NUMBER] for [AMOUNT] was due on [DATE].
If you've already sent payment, please disregard this — thank you! If not:
- • Invoice: #[NUMBER] · [AMOUNT] · Due [DATE]
- • [Pay now: PAYMENT LINK]
Best,
[YOUR NAME]
Template 2: Polite Second Reminder (Day 7–10)
Use this when: No response to the first email.
Subject:
Following up: Invoice #[NUMBER] — [X] days overdue
Hi [CLIENT NAME],
Following up on Invoice #[NUMBER] for [AMOUNT], due [DATE]. I haven't received payment yet — could you let me know when to expect it?
If there's an issue, I'm happy to discuss. [Pay now: PAYMENT LINK]
Thank you,
[YOUR NAME]
Template 3: Direct & Firm (Day 14)
Use this when: Two emails, no response. Be direct.
Subject:
Invoice #[NUMBER] — 14 days past due, action required
Hi [CLIENT NAME],
This is my third notice regarding Invoice #[NUMBER] for [AMOUNT], now 14 days past due.
I need payment or a confirmed payment date by [DATE].
[Pay now: PAYMENT LINK]
Regards,
[YOUR NAME]
Template 4: Final Notice Before Collections (Day 21+)
Use this when: You're serious about escalating. Last direct email.
Subject:
FINAL NOTICE: Invoice #[NUMBER] — [AMOUNT] overdue
Dear [CLIENT NAME],
This is a final notice regarding Invoice #[NUMBER] for [AMOUNT], now [X] days overdue.
If full payment is not received by [DATE], I will refer this matter to a collections agency and/or pursue legal action.
To resolve this immediately: [PAYMENT LINK]
Regards,
[YOUR NAME]
Template 5: Pre-Due Reminder (Day Before)
Subject:
Friendly reminder: Invoice #[NUMBER] due tomorrow
Hi [CLIENT NAME],
Just a heads up — Invoice #[NUMBER] for [AMOUNT] is due tomorrow, [DATE].
[Pay now: PAYMENT LINK]
Thanks!
[YOUR NAME]
Template 6: They Promised to Pay & Didn't
Subject:
Following up — Invoice #[NUMBER] (payment expected [DATE])
Hi [CLIENT NAME],
Following our conversation, I was expecting payment for Invoice #[NUMBER] by [DATE]. I haven't seen it come through — could you confirm when this will be processed?
[PAYMENT LINK]
Thanks,
[YOUR NAME]
Template 7: Long-Term Client You Want to Keep
Subject:
Quick note on Invoice #[NUMBER]
Hi [CLIENT NAME],
I know you're busy — just flagging that Invoice #[NUMBER] for [AMOUNT] is [X] days past due. I'm sure it's slipped through the cracks.
Happy to jump on a call, or pay online: [PAYMENT LINK]
Thanks as always,
[YOUR NAME]
Template 8: Invoice Dispute Response
Subject:
Re: Invoice #[NUMBER] — addressing your concerns
Hi [CLIENT NAME],
Thank you for getting back to me. [Address concern — e.g., “The invoice reflects [HOURS] hours as agreed in our contract dated [DATE], attached for reference.”]
The undisputed portion of the invoice ([AMOUNT]) remains due on [DATE].
Best,
[YOUR NAME]
Template 9: Late Fee Applied
Subject:
Invoice #[NUMBER] — late fee applied, new total: [AMOUNT]
Hi [CLIENT NAME],
Invoice #[NUMBER] is now [X] days past due. As per our agreement, a late fee of [FEE] has been applied.
Updated total: [NEW AMOUNT] — [PAYMENT LINK]
Payment in the next 48 hours prevents additional charges.
Regards,
[YOUR NAME]
Template 10: Automated Sequence (Let Chaser Do It)
🐕 Stop writing these emails manually
Chaser sends all 4 escalation stages automatically — friendly reminder on day 3, firm follow-up on day 7, urgent notice on day 14, final demand on day 21.
Try Chaser free →Subject Line Best Practices
- Include the invoice number — triggers recognition, feels official
- Be specific about the amount — “$2,400 overdue” is harder to ignore
- Escalate tone with the stage — “Quick reminder” → “Action required” → “FINAL NOTICE”
- Avoid spam triggers — no excessive caps, no “FREE” or “URGENT!!!”
Timing Your Reminders
| Stage | When | Tone |
|---|---|---|
| Stage 1 | Day 3–5 | Friendly, assumes oversight |
| Stage 2 | Day 7–10 | Professional, asks for response |
| Stage 3 | Day 14–16 | Firm, requires action by date |
| Stage 4 | Day 21–30 | Final notice, legal language |
Common Mistakes
- Apologizing for chasing — you have nothing to apologize for
- Being too vague — “just checking in” doesn't make payment clear
- Going emotional — keep all emails factual and professional
- Waiting too long — start at day 3–5, not day 30
- No payment link — remove every obstacle, make it one click
Automate all 10 stages with Chaser
Add an overdue invoice once. Chaser sends the right email at the right time — you never have to write another awkward follow-up.
Free for up to 3 invoices · $15/month unlimited
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