Day 7Friendly

Overdue Invoice Email Template (Copy and Send Today)

An invoice is overdue the day after its due date. This is the email to send once it is clearly late and the polite nudge has not worked: short, specific, and built so the client can pay or reply in under a minute.

When to send it

Send it 5 to 10 days after the due date, when one reminder has gone unanswered or there was no reminder at all. Before that, a friendly nudge is enough. After 14 days, move to a firm request with a deadline.

The full template

Template
Subject
Invoice [INVOICE #] is overdue: [AMOUNT]
Hi [CLIENT NAME],

Invoice [INVOICE #] for [AMOUNT] was due on [DUE DATE] and is now [X] days overdue.

To make it easy, here is everything in one place:

Amount: [AMOUNT]
Reference: [INVOICE #]
Pay to: [BANK DETAILS / PAYMENT LINK]

Could you confirm the date the payment will go out? If something on the invoice is holding it up, tell me what it is and I'll fix it today.

Thanks,
[YOUR NAME]

Variant: Three-line version for clients who pay late but always pay

Three-line version for clients who pay late but always pay
Subject
Overdue: invoice [INVOICE #]
Hi [CLIENT NAME],

Quick flag: invoice [INVOICE #] ([AMOUNT]) was due [DUE DATE]. Payment link: [LINK].

What date should I expect it?

[YOUR NAME]

Mistakes to avoid

  • Attaching the invoice and writing "see attached". Put the amount, reference and payment details in the body so nobody has to open a file.
  • Asking "did you get my invoice?". It invites "no" or silence. Ask for a payment date instead.
  • Sending it to the person you worked with when someone else pays. Copy accounts payable, or ask who handles payments.
  • Apologizing for asking. You delivered the work; the invoice is a normal business document.

FAQ

How many days after the due date is an invoice overdue?

Technically one day. In practice, wait 3 days for a friendly reminder and use this overdue email from about day 7.

Should I add a late fee in the first overdue email?

Only mention it if your contract or invoice already states one. Introducing a fee for the first time in a reminder is hard to enforce and sours the relationship.

What if the client replies with a date and then misses it?

Reply the day after the missed date, quote their own date back, and move to the firm request template.

Generate all 4 emails with your details

Free, no account. Dates calculated from the due date.

Invoice details

Private, in your browser
Tone

4 follow-ups

To
Northwind Studio
Subject
Invoice INV-0042: payment reminder
Send
Hi Northwind Studio,

Invoice INV-0042 for USD 2,400.00 was due on October 20, 2026. I don't have the payment on my side yet.

Probably an oversight, so here are the details again:

Amount: USD 2,400.00
Reference: INV-0042
Pay to: details on the invoice (attached again)

If it has already gone out, send me the transfer date and I'll match it on my end.

Thanks,
Alex Rivera

Email 1 of 4

Open in email

Copy the full sequence, or open the active email in your mail app.

Still not paid after Day 30?

That is when another email stops working. The Late-Payment Rescue Pack has what I send when a client goes quiet:

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More templates

Late Payment Rescue Pack

Everything you need when a client doesn't pay.

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    Formal letter for 30+ days overdue

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