Example email
Example amounts only. Replace them with your actual invoice and payment details.
Subject: Remaining Balance – Invoice INV-1048
Hello Alex, Thank you for the payment of CAD 3,500.00 received toward invoice INV-1048. The original invoice total was CAD 5,000.00, leaving a remaining balance of CAD 1,500.00. The balance was due on September 18, 2026. Please confirm the current payment status and the date we can expect the remaining balance to be paid. If there is an issue delaying payment, please let us know what is needed from our side to help resolve it. If the balance has already been paid, please let us know so our records can be updated. Thank you, Morgan Smith Consulting
Subject-line examples
- Remaining Balance – Invoice INV-1048
- Payment Received – Balance Outstanding on Invoice INV-1048
What to include
Use the original invoice number, original total, total payments actually received and the remaining balance. Check whether the customer agreed a separate due date for the balance. Use one currency throughout, and confirm that any payment you include belongs to this invoice.
Appropriate tone: acknowledge progress
Start by thanking the customer for the payment received. Before the due date, ask them to schedule the balance. On the due date, ask for payment today. After the due date, state how overdue the balance is and ask for a payment date. Never describe the entire original invoice as unpaid after receiving part of it.
Common mistakes
Do not subtract an expected transfer before you have confirmed it was received. Do not include a payment allocated to a different invoice. This calculator subtracts payments only; it does not handle credit notes, refunds, currency conversion or a disputed balance. Reconcile those adjustments in your own records before using a simple payment-only calculation.
A fully paid invoice produces a balance confirmation, not a payment-demand email. If you enter zero received, the tool will not thank the customer for a payment that has not occurred.
Questions about this situation
How do I politely request the remaining invoice balance?
Thank the customer for the amount received, state the balance, and ask for the expected payment date. Be clear that you are requesting only the unpaid portion.
Should I acknowledge the payment already received?
Yes. Acknowledging it makes clear that your request accounts for the customer’s payment and avoids asking for the same amount twice. Check the amount against your records first.
How do I calculate the remaining balance?
Subtract total payments received from the original invoice amount. For example, CAD 5,000.00 minus CAD 3,500.00 leaves CAD 1,500.00. The tool uses whole cents to avoid floating-point subtraction errors.
Related guidance
Need help with a different overdue stage? Use the free Invoice Reminder Email Generator.
InvoiceAnswers provides general productivity tools, not legal, accounting, tax or debt-collection advice. Review your details and message before sending.