Check the facts first
Confirm the invoice number, amount, due date, payment terms, and whether the client has already sent payment. Check your bank or payment account before sending a second notice.
Send a short first reminder
Reference the invoice and ask whether the client has received it. Include the amount and due date and make the requested next step obvious.
Make later reminders more specific
If the invoice remains unpaid, ask for a confirmed payment date. Keep a record of your messages and any response from the client.
Separate an invoice dispute from a payment delay
If the client says the invoice is incorrect or the work is disputed, address the specific issue rather than repeatedly sending the same payment request. Review the contract and supporting records.
Consider a structured escalation
For persistent non-payment, follow the process in your agreement and applicable local rules. Depending on the situation, that may involve pausing additional work, issuing a formal notice, or seeking professional advice.
Avoid unsupported threats
Do not threaten legal action, collections, or penalties unless you understand your rights and obligations. Keep reminders factual and consistent with the agreement.
Calculate possible late charges carefully
If your contract and local rules permit a late fee or interest, use the relevant terms rather than assuming a generic rate applies.
Use the reminder generator
Enter the client, invoice, amount, due date, and preferred tone to create a starting message you can review before sending.
/tools/payment-reminder-generator
Use the related ToolAlto utility to turn the information above into a practical next step.
Open the related ToolAlto tool →Overdue Invoice FAQ
When should I send an overdue invoice reminder?
Check the agreed payment terms first. A reminder can be sent after the due date when the balance remains unpaid, with timing adjusted to your client relationship and process.
What should an overdue reminder include?
Include the invoice number, outstanding amount, original due date, and a clear request for payment or a confirmed payment date.
Can I charge interest on an overdue invoice?
Only if the applicable agreement and local rules allow it. ToolAlto's late-payment calculator is for estimating amounts, not determining legal entitlement.