Payment Reminder Email Templates: Polite, Firm, and Final

Short answer: a payment reminder email should be short, factual, and sent on a schedule — a friendly nudge before the due date, a neutral note on the day, then firmer reminders at 7, 14 and 30 days overdue. Below are five copy-paste templates, the subject lines that get them opened, and exactly when to send each. Swap the {placeholders} for your details and send.

The one rule: calm, factual, scheduled

The reminders that get invoices paid have nothing clever in them. They are calm, they state facts, and they arrive on a predictable rhythm. The tone we've seen work best with European clients is the tone you'd use to flag a parcel that hasn't arrived — not annoyed, just surfacing it. Over-apologising (“so sorry to bother you again”) reads as if late payment is negotiable. It isn't.

These templates are the email copy only. For the reasoning behind the schedule and how to escalate without damaging the relationship, see how to chase an unpaid invoice politely.

When to send each reminder

Subject lines that get opened

• Before due: Invoice INV-014 — due Friday
• On due date: Reminder: Invoice INV-014 now due
• Overdue: Invoice INV-014 — {n} days overdue
• Final: Invoice INV-014 — formal payment reminder

Always put the word “invoice” and the number in the subject. Accounts payable teams search by number, so a vague subject line buries you.

The five templates

1 · Friendly reminder (3 days before due)

Hi {name},

Quick heads-up that invoice {INV-014} ({€4,500}) is due on {Friday, 16 May}. No action needed if it's already scheduled — just flagging it early in case you need anything from me to process it. Happy to resend the PDF.

Thanks, {your name}

2 · Due today (neutral)

Hi {name},

Invoice {INV-014} is due today. Could you confirm it's in this week's payment run? For your records: {INV-014}, {€4,500}, issued {2 May}.

Thanks, {your name}

3 · First overdue notice (7 days)

Hi {name},

Invoice {INV-014} ({€4,500}) is now 7 days overdue. Could you let me know where it stands? If there's anything you need from me to release payment, I'm happy to help.

Our agreed terms are {net 14}, so this is now outside them — flagging early in case there's an internal blocker.

Thanks, {your name}

4 · Second overdue notice (14 days)

Hi {name},

Following up on invoice {INV-014}, now 14 days overdue. I haven't heard back on the last reminder, so I want to make sure this hasn't fallen off the radar.

If we can't get it resolved by {Friday}, I'll need to send a formal demand and add statutory late-payment interest. Hoping it doesn't come to that — let me know if I can help.

Best, {your name}

5 · Final demand (30 days)

Hi {name} — cc'ing {their manager},

Invoice {INV-014} ({€4,500}, issued {2 May}, due {16 May}) is now 30 days overdue, and I've had no response on payment timing.

Under the EU Late Payment Directive 2011/7/EU I'm entitled to statutory interest of 8% above the ECB reference rate plus a €40 recovery fee. (UK clients: the equivalent is the Late Payment of Commercial Debts (Interest) Act 1998.) Please arrange payment by {date} to avoid interest being applied.

Regards, {your name}

What every reminder must contain

• The invoice number — in the subject and the body.
• The amount and the original due date.
• How overdue it is (once it is), stated as a fact, not a complaint.
• One clear, single request — confirm timing, or tell me what's blocking it.
• The invoice itself, re-attached or re-linked, so there's no digging.

If your reminders keep going unanswered, the problem is sometimes the invoice, not the client — an ambiguous total or a missing PO number parks it in an exception queue. It's worth checking what to put on an invoice so the next one clears AP without a single question.

FAQ

What should I write in a payment reminder email?

Keep it short and factual: the invoice number, the amount, the original due date, how many days it is overdue (if at all), and a single clear request to confirm payment timing. Attach or re-link the invoice, and offer to help if anything is blocking it. Avoid apologies and avoid emotion — you are flagging a fact, not asking a favour.

How do you politely ask for payment in an email?

Lead with a friendly line, state the invoice details plainly, and frame the ask around helping the client pay rather than accusing them of not paying — for example, “Could you confirm this is in your next payment run, or let me know if you need anything from me to release it?” Politeness comes from being calm and specific, not from over-apologising.

What is a good subject line for a payment reminder?

Make it scannable and specific so it survives a crowded inbox: include the word “invoice”, the number, and the status. Examples: “Invoice INV-014 — due Friday”, “Reminder: Invoice INV-014 now due”, or “Invoice INV-014 — 14 days overdue”. Vague subjects like “Quick question” get ignored by accounts payable teams.

What to read next

• How to chase unpaid invoices politely — the full five-step sequence
• What to put on an invoice — the complete checklist