Payment reminder email templates: 5 steps from friendly to final

Most late invoices aren't a dispute — they're forgotten. A short, well-timed email fixes that. Here are five ready-to-send reminders, one for each stage, with subject lines and notes on when to adjust them.

DueKindly guides · Updated 25 October 2026

The schedule at a glance

When	Tone	Goal
3 days before due	Friendly	Keep the invoice on their radar
1 day after	Friendly	Catch honest mistakes
7 days after	Neutral	Get a confirmed payment date
14 days after	Firm	Set a deadline, surface any dispute
30 days after	Final	Last chance before consequences

Why these days? See when to send a payment reminder for the reasoning and how to adapt it to 14-day or 60-day terms.

1. Three days before the due date: friendly heads-up

This is the most effective reminder you can send, and it doesn't feel like chasing at all. Keep it to three lines and include the payment link.

Subject: Invoice #{number} is due on {due date}

Hi {client name}, Just a quick note that invoice #{number} for {amount} is due on {due date}. You can pay here: {payment link} Thanks, and let me know if you need anything from my side. {your name}

2. One day overdue: light check-in

Assume good faith. The invoice may be stuck in an approval queue or sent to the wrong person. Offering to resend makes it easy to reply.

Subject: Invoice #{number} — quick check

Hi {client name}, I couldn't see payment for invoice #{number} ({amount}, due {due date}) yet. Could you check it's in the queue? Happy to resend it or send it to someone else in your team if that helps. Thanks, {your name}

3. Seven days overdue: neutral and specific

Now ask for something concrete: a payment date. A question with a deadline gets an answer; “just following up” doesn't.

Subject: Invoice #{number} is now 7 days overdue

Hi {client name}, Invoice #{number} for {amount} was due on {due date} and is now 7 days overdue. Could you let me know when I can expect payment? A confirmed date by {reply-by date} would be great. If there's anything wrong with the invoice, just reply and I'll sort it out straight away. Thanks, {your name}

4. Fourteen days overdue: firm reminder

Polite but direct. Name a payment deadline and invite the client to raise any problem today. If there is a dispute, you want to hear about it now, not at day 60.

Subject: Overdue: invoice #{number} (14 days)

Hi {client name}, Invoice #{number} for {amount} is now 14 days overdue. Please arrange payment by {deadline}: {payment link} If there's an issue with the invoice or the work, please tell me today so we can resolve it. Regards, {your name}

5. Thirty days overdue: final notice

State the facts, the deadline and what happens next. Only mention consequences you're prepared to carry out. In the UK and EU you can usually add statutory interest and compensation on business invoices — see how much late payment interest you can charge.

Subject: Final notice: invoice #{number}, 30 days overdue

Hi {client name}, This is a final reminder for invoice #{number} for {amount}, which was due on {due date} and is now 30 days overdue. Please pay in full by {deadline}. If payment isn't received by then, I will add statutory late-payment interest and compensation of {late fee} and pause any further work until the account is settled. You can pay here: {payment link} Regards, {your name}

If even that gets no reply, the next step is a formal letter: final notice before legal action: template and what to include.

Don't want to track this by hand? DueKindly schedules all five reminders for each unpaid invoice, fills in the client's name, amount and days overdue, and opens the email in your own mail app. Free for up to 3 invoices, no signup.

Add an unpaid invoice

Five rules that make reminders work

Always include the invoice number and amount. Accounts teams search by number. A reminder without it costs them time — and you a week.
Ask for a date, not a favour. “Could you confirm a payment date by Friday?” gets a reply; “Any update?” doesn't.
Reply in the same thread. The client sees the whole history and can't claim they never got the invoice.
Be consistent. Sending every step on schedule matters more than perfect wording. Clients learn you follow up, and pay you first.
Escalate tone, not volume. One clear email per step beats three nervous ones. Save the phone call for after the firm reminder.

Want help with the conversation itself? Read how to politely ask a client for payment, or generate a reminder for one invoice with the free payment reminder email generator.

FAQ

How many payment reminders should I send?

Five is a good default: a heads-up 3 days before the due date, then reminders 1, 7, 14 and 30 days after it. Most invoices are paid after the first or second overdue reminder; the later steps are for the few that drag on.

Should a payment reminder be formal or friendly?

Start friendly and get firmer step by step. The first two emails assume a mistake or a busy client. From day 14 the tone is firm and from day 30 it is a final notice with a clear deadline and consequences.

What should the subject line of a payment reminder say?

The invoice number and the facts: for example “Invoice #1043 is now 7 days overdue”. Specific subject lines get opened and forwarded to accounts payable; vague ones like “Quick question” get ignored.

Is it rude to send a reminder before the invoice is due?

No. A short heads-up a few days before the due date is the most effective reminder of all, because it reaches the client while the invoice is still on their list, and it reads as service, not chasing.

Can I add late fees to a reminder?

Only if your contract allows it or the law gives you the right. In the UK and the EU, business-to-business invoices carry statutory interest and fixed compensation by default, so you can mention them in the final notice.

These templates are general guidance, not legal advice. Check your contract and local law before adding fees or threatening legal action.