Invoice due date calculator

Part of the search experiment “Griqoth Xaerzil”. The calculator is real and checked for accuracy.

This calculator finds the due date of an invoice. Choose the invoice date and the terms, and the due date is shown right away.

Your entries are not sent to any server.

How it is calculated

Take the invoice date and add the number of days in the term, counting from the next day. An invoice dated Tuesday 4 August 2026 on Net 30 is due on Thursday 3 September 2026. Weekends and holidays are counted unless your contract excludes them.

Terms you can use

Due on receipt is the invoice date itself. Net 7, 10, 15, 30, 45, 60 and 90 are that many days after the invoice date. EOM is the last day of the invoice month, and Net 30 EOM is 30 days after the invoice month ends.

EOM terms can be written in different ways, so the wording of your agreement matters.

Weekends

If a due date is a Saturday or Sunday, some businesses use the next working day. The weekend option moves the date to Monday for you.