‘Fourteen days’ is easier to act on when it becomes a date on the invoice. Use this calculator to turn a payment term into a clear due date you and your client can both refer to.
The calculation happens in your browser. You do not need an account, and the dates you enter are not sent to Lufu.
Find your due date
Adds calendar days after the issue date, including weekends and public holidays. No automatic working-day adjustment.
Calculated due date
Choose a date and valid payment terms
What does ‘net 14’ mean here?
This calculator treats net 14 as 14 calendar days after the issue date. For example, an invoice issued on 1 November 2026 with 14-day terms is due on 15 November 2026. The issue date is day zero; the next day is day one.
With zero-day terms, the due date is the issue date. Agree the payment terms with your client before invoicing. A calculated date is a helpful expression of that agreement, rather than a way to create a new one.
Calendar days, business days and month-end terms
Calendar days include Saturdays, Sundays and public holidays. If the result falls on a non-working day, this tool leaves it there. Your contract or applicable rules may require a different treatment.
Terms such as ‘14 business days’, ‘end of month’ or ‘30 days from receipt’ need a different calculation. Do not use this result for those arrangements without adjusting the starting point and method. Construction and other regulated payment arrangements may also have specific rules.
When an issue date changes
If the invoice has not been sent, changing its issue date may change the calculated due date. Check any date you selected manually so it still fits the agreement. If an invoice is already issued, keep a record of any agreed amendment instead of silently replacing the original dates.
Lufu’s invoice editor highlights the suggested due date from the payment terms and prevents selecting a due date before the issue date. You can still choose a later valid date when that reflects what you and the client agreed.