Invoice reminder templates

Copy, personalize, and keep the structure: subject line with invoice number, warm greeting, facts (number, amount, due date), clear ask, payment details, polite close. Templates save time and keep your tone consistent when you are busy or frustrated.

Attach or link the invoice every time. Do not assume the client still has the original email. Replace bracketed fields carefully so nothing reads generic by accident.

Send from your normal business address. If someone else handles collections, say so once so the client knows who to reply to.

When to send: two to five days before the due date, especially for Net 15 or Net 30 invoices that might otherwise get lost.

Subject: Upcoming invoice [INV-####] due [date]. Body: Hi [Name], a quick reminder that invoice [INV-####] for [amount] is due on [date]. I’ve attached the PDF again for convenience. You can pay by [method/link]. Thanks so much — [Your name].

Why it works: it prevents lateness without implying the client is already behind. Many finance teams appreciate the heads-up.

When to send: one business day after the due date if payment has not arrived or been confirmed.

Subject: Invoice [INV-####] now due. Body: Hi [Name], hope you’re well — invoice [INV-####] for [amount] was due on [date]. Could you confirm it’s in your payment queue? I’m happy to resend the PDF or payment instructions if helpful. Thank you, [Your name].

Keep it light. Your goal is confirmation and unblocking, not accusation.

When to send: about seven days past due, after the soft check-in.

Subject: Follow-up on overdue invoice [INV-####]. Body: Hi [Name], I’m following up on invoice [INV-####] for [amount], originally due [date] ([X] days overdue). Please arrange payment by [new short deadline] or let me know if something is blocking processing (PO, approval, revised details). Payment options: [methods]. Thanks, [Your name].

Offer a path: pay now, or explain the blocker. Either response moves the invoice forward.

When to send: after multiple attempts, typically two to three weeks overdue depending on amount and relationship.

Subject: Final reminder — invoice [INV-####]. Body: Hi [Name], this is a final reminder regarding unpaid invoice [INV-####] ([amount]), originally due [date]. Prior notes were sent on [dates]. Please arrange payment by [firm date] or reply with a written payment plan so we can avoid pausing further work / further collection steps. The invoice is attached. Regards, [Your name].

Keep it factual. Save legal threats for rare cases and professional advice. Never threaten actions you will not take.

Reference the project name or PO in the first sentence for larger clients. Mention a recent delivery milestone if it helps them locate the bill internally.

If you offer a short payment plan, say so in the week-overdue template—not only in the final notice. Earlier options recover more cash.

What to do next: save these four templates in a note or snippet tool and schedule them against your open invoices each week.