How the due date is calculated
Net terms count calendar days from the issue date: a Net 30 invoice issued August 26 is due September 25 — thirty days later, weekends included. "Due on receipt" means what it says: payment is expected when the invoice arrives. If you and your client agreed to count business days instead, that is a custom arrangement — spell it out on the invoice, because calendar days are what everyone assumes.
What Net 30, Net 15 and "2/10 Net 30" actually mean — and how to pick terms that get you paid faster — is covered in invoice payment terms. The date itself goes in the generator's Due date field and prints on the PDF.
A worked example
An invoice issued Aug 26, 2026 on Net 30 is due Sep 25, 2026. The same invoice on Net 15 would be due Sep 10; on Net 60, Oct 25. One habit worth keeping: write the resolved date on the invoice ("Due Sep 25, 2026"), not just the term — the client's bookkeeper should never have to do this math.
Due date FAQ
Do Net terms count weekends?
Yes — Net terms are calendar days unless the contract says otherwise. If the due date lands on a weekend or holiday, many businesses treat the next business day as acceptable; put that in writing if it matters to you.
When does the clock start?
From the invoice's issue date — not the delivery of the work and not the day the client opens the email. That is why invoicing the same day you deliver matters: every day before the invoice exists is a day the clock has not started.
What terms should I use?
Shorter than you think: Net 15 or even due on receipt is normal for small services. Net 30 is the corporate default. The trade-offs live in the payment terms guide.