Quick answer
Net 30 usually means payment is due 30 calendar days after the invoice date. If the wording says 30 business days, weekends are normally skipped and public holidays may also be excluded. Use this tool to find the exact due date whichever interpretation applies.
What net 30 actually means
Net 30 is one of the most common payment terms in the UK and internationally. It sets the deadline for invoice settlement at 30 days from the invoice date. The key distinction is whether the term refers to calendar days or business days, because that single choice can shift the due date by a week or more.
Most UK invoices issued on standard commercial terms use calendar days. This means if you invoice someone on 1 June, the due date is 1 July regardless of whether those 30 days include weekends or bank holidays. However, some contracts · " particularly in construction, logistics, and public sector procurement · " specify 30 working days or 30 business days instead.
Why the difference matters
Imagine an invoice dated 14 November with a due date of 14 December. Between those dates sits one full weekend plus a weekend either side. In calendar-day terms the due date is fixed. In business-day terms you lose around 8 or 9 days to weekends, effectively bringing the payment deadline forward. Get this wrong and you could be chasing payment a week earlier than the debtor expects.
Using this calculator removes the guesswork. Select the appropriate day type, enter your invoice date, and get the exact date the payment is due.
What to do if the due date falls on a weekend or bank holiday
UK law (the Late Payment of Commercial Debts Regulations) treats the due date as the day on which payment becomes overdue. If the contractual due date falls on a non-working day, the debtor is technically not in breach until the next working day. However, many contracts explicitly address this with a "next working day" clause. Always check the actual contract wording.
If you are the creditor, it is good practice to send a gentle reminder a day or two before the due date, and to follow up on the next working day if no payment arrives.
Checking your own payment terms
Before relying on a net 30 calculation, confirm three things: the exact invoice date on the document, the precise wording of the payment term (net 30, net 30 days, 30 days, 30 business days, or 30 working days), and whether your contract has any special provisions for bank holidays or month-end transitions.
FAQs
Does net 30 include weekends?
Usually yes. Net 30 normally means 30 calendar days unless the invoice or contract explicitly says business days or working days. Check the invoice wording and your contract.
Is net 30 the same as 30 business days?
No. Net 30 is usually calendar days. 30 business days skips weekends and may also skip public holidays, making the actual due date different from a straight 30-day calendar count.
What should I check before chasing payment?
Check the invoice date, the exact payment term wording, your contract or purchase order, and whether the due date falls on a weekend or public holiday. If it does, check whether your contract has a next-working-day provision.
Can I use this for net 60 or net 90 terms too?
Yes. The same principle applies to any numbered-day payment term. Just use the calculator in business-day mode if your contract specifies working days rather than calendar days.
What about month-end terms like net 30 from end of month?
That is a different calculation. Net 30 from the end of the month means 30 days from the last day of the invoice month, not from the invoice date. Use the calculator from the last day of that month for the correct due date.