Payment terms

Free Early Payment Discount Calculator

Check the amount a client should pay if they qualify for an agreed discount. Enter the amount eligible for the discount rather than assuming every invoice charge is eligible.

Preparing your calculator with today’s date…

Calculation notes

How the result is calculated

Discount = eligible amount × percentage, rounded to two decimals. Discounted payment = eligible amount − discount. Deadline = issue date + window in calendar days, without weekend shifting. This checks the offer, not whether a discount is profitable or how local tax rules treat it.

Formulas and examples reviewed October 2, 2026. Illustrative figures; no tax or contractual determination.

2% within ten days

An eligible USD 2,500 amount receives a USD 50 discount, leaving USD 2,450. Issued October 2 with a ten-day window, the deadline is October 12.

Some charges excluded

A USD 1,000 service charge and USD 200 reimbursed expense total USD 1,200. If only the service qualifies for 3%, enter USD 1,000: discount USD 30. Add the unchanged USD 200 separately, giving USD 1,170 before any required tax adjustment.

Questions about this calculation

Is this the invoice due date?

No. A discount deadline can be earlier than the normal due date. State both dates clearly and explain which amount is payable after the discount expires.

Should I subtract the discount from tax?

The calculator does not determine tax treatment. Confirm the applicable treatment and any credit-note requirements before changing a tax invoice.

How to use it

1

Choose the eligible amount and discount percentage.

2

Enter the issue date and the calendar-day discount window.

3

State whether funds must be received or payment initiated by the deadline.

Related workflows

Move from the quick answer into the rest of the invoice system.