Final Notice Overdue Invoice Email Template (Firm but Professional)

A final notice should be calm and specific: state the invoice details, set a deadline, and ask for a payment date. Keep it agreement-based—no drama.

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Final notice subject lines

Final notice: invoice #{InvoiceNumber}
Action required: overdue invoice #{InvoiceNumber}
Deadline {DeadlineDate} — invoice #{InvoiceNumber}
Final reminder — invoice #{InvoiceNumber}
Please respond today — invoice #{InvoiceNumber}

Email templates

Option A — Neutral final notice (best default)

Subject: Final notice: invoice #{InvoiceNumber}

Hi {Name},

This is a final reminder that invoice #{InvoiceNumber} for {Amount} remains unpaid (due {DueDate}).
Please confirm payment by {DeadlineDate}. If we don’t hear back, we’ll proceed with the next steps per our agreement.

Payment details: {PaymentDetails}

Regards,
{YourName}

Option B — Action required (short)

Subject: Action required: overdue invoice #{InvoiceNumber}

Hi {Name},

Following up again on invoice #{InvoiceNumber} ({Amount}), due {DueDate}.
Please reply today with the payment date, or let us know if there’s an issue we should address.

Regards,
{YourName}

Option C — Pause work mention (only if applicable)

Subject: Deadline {DeadlineDate} — invoice #{InvoiceNumber}

Hi {Name},

Invoice #{InvoiceNumber} ({Amount}) is overdue since {DueDate}.
Unless payment is received by {DeadlineDate}, we’ll pause further work until the balance is settled, per our agreement.

Payment details: {PaymentDetails}

Regards,
{YourName}
{Company}

How to send a final notice (without escalating too early)

Use a real date for the deadline (not just “48 hours”).
Keep it factual: invoice #, amount, due date, and the deadline.
Ask for one thing: confirm the payment date (or pay today).
Send it in the same email thread as prior reminders (if possible).

FAQ

Invoice number, amount, due date, a clear deadline, payment details, and a request to confirm the payment date.

Final Notice Overdue Invoice Email Template (Firm but Professional)

Final notice subject lines

Email templates

How to send a final notice (without escalating too early)

FAQ

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