Net 30 Real Due Date Calculator
Enter an invoice date and see exactly when a Net 30 payment will land. If day 30 falls on a Saturday, Sunday, or public holiday, this tool finds the next business day. Built for accounts receivable teams and freelancers who need to forecast cash flow accurately.
What is Net 30?
Net 30 is the most common payment term in business-to-business invoicing. It means the buyer has 30 days from the invoice date to pay the full amount. However, if day 30 falls on a Saturday, Sunday, or public holiday, the actual payment will not be processed until the next working day.
This calculator takes your invoice date, adds 30 days, and then adjusts the result to the next business day if needed. It accounts for weekends and public holidays in 16 countries, giving you the exact date to expect payment.
Practical examples
Net 30 from today
Click "Use today" and the calculator instantly shows you the real due date 30 business-adjusted days from now, accounting for any upcoming weekends or holidays.
Net 30 from a specific invoice date
Invoice dated 15 November. Calendar due: 15 December. If 15 December is a Saturday, your real due date is Monday 17 December. If that Monday is also a holiday, it shifts again.
Net 30 due date on a Saturday
Invoice dated 2 August. 30 days later is 1 September (Sunday). The real business due date is Monday 2 September. But if that is Labour Day in the US, it shifts to Tuesday 3 September.
Net 30 adjusted to next business day
Invoice dated 25 March, Net 30 = 24 April. If 24 April is a regular Thursday, that is your due date. No adjustment needed. The calculator only shifts when the date falls on a non-working day.
FAQ
Frequently Asked Questions
Common calculations
When is Net 30 due from an invoice date?
Net 30 = invoice date + 30 calendar days. Example: invoice dated 1 June → calendar due date 1 July. Enter the invoice date above for the exact result, plus the real business due date if 1 July falls on a weekend or holiday.
How do I adjust Net 30 for a weekend?
If the 30th day falls on a Saturday, the real due date is the following Monday. If it falls on a Sunday, the real due date is Monday. The calculator handles this automatically — just enter the invoice date and select the country.
How do I adjust Net 30 for a public holiday?
Select the buyer's country from the dropdown. If day 30 lands on a national public holiday, the real due date advances to the next working day. Example: invoice 3 December, Net 30 → calendar due date 2 January. If 2 January is a bank holiday in the UK, the real due date is 3 January.
What is the Net 30 real due date from today?
Click "Use today" in the calculator above. The result shows today + 30 calendar days, then adjusts for any weekend or public holiday that falls on that date. This is the real date to put in your AR chase reminder.
What is the difference between Net 30 calendar days and Net 30 business days?
Net 30 calendar days counts 30 days including weekends — typically landing on the same date next month. Net 30 business days counts 30 Mon–Fri days only, which spans approximately 6 calendar weeks. Most standard B2B invoices use calendar days unless the contract explicitly states "business days".
Working with other payment terms? Use the Invoice Real Due Date Calculator for Net 7, Net 14, Net 45, Net 60, or custom terms.
Need the full version? The Real Due Date Calculator also supports SLA deadlines and shipping delivery estimates.