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Invoice due date
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An invoice's due date is the invoice date plus the days in its payment terms: Net 30 is 30 calendar days later. No signup, and nothing leaves your browser.

Find a due date

Pick the invoice date and payment terms. Nothing you enter leaves your browser.

The date on the invoice, not the day it was received.

Net N = N calendar days after the invoice date.

This calculator treats Net N terms as N calendar days after the invoice date. Weekends and holidays count, and a due date that lands on one isn't moved.

Calculated due date

Choose an invoice date to see the due date.

This calculator uses the payment term you select and counts calendar days from the invoice date. Contracts, industries or jurisdictions may define payment terms differently. It doesn't calculate late fees, interest or penalties, and it isn't legal advice.

Published · By RecordSplit

How it works

How invoice due dates
are calculated.

One rule for every Net term: count forward from the invoice date, one calendar day at a time.
The formula
Due date = invoice date + N calendar days
N comes from the terms
Net 7 is 7 days, Net 30 is 30 days, Net 90 is 90 days. Due on receipt is 0 days: the due date is the invoice date itself.
Start from the invoice date
Count from the date printed on the invoice. The day after the invoice date is day 1.
Every calendar day counts
Weekends and public holidays are counted like any other day, and the result isn't moved if it lands on one.

What does Net 30 mean?

One invoice,
five payment terms.

Net 30 means payment is due 30 days after the invoice date. Counted in calendar days, an invoice dated Thursday, October 1, 2026 is due Saturday, October 31, 2026.

The same invoice on other terms gives the dates on the right. Each is the invoice date plus the term's days, with nothing moved for weekends or holidays.

Due on receipt
Oct 1, 2026
Net 15
Oct 16, 2026
Net 30
Oct 31, 2026
Net 60
Nov 30, 2026
Net 90
Dec 30, 2026

October 31, 2026 is a Saturday. The calculator shows it as calculated; whether payment can wait until the following Monday depends on your agreement.

Comparing terms

Net 15 vs Net 30
vs Net 60.

The number is the only difference: how many calendar days the customer has after the invoice date. For help choosing between them and wording them on an invoice, see invoice payment terms explained.
Due on receipt
Payment is due on the invoice date. No days are added.
Net 7, Net 10 and Net 15
Short windows: due 7, 10 or 15 calendar days after the invoice date. Money arrives sooner, and the customer has less time to pay.
Net 30
Due 30 calendar days after the invoice date. An invoice dated October 1 is due October 31.
Net 45, Net 60 and Net 90
Longer windows: the customer has more time, so you wait longer for the money. An invoice dated October 1 is due November 15, November 30 or December 30.
Custom
Any whole number of calendar days from 0 to 365, for terms that don't match a standard Net option.

Counting days

Calendar days vs
business days.

This calculator treats Net N terms as N calendar days after the invoice date. Your contract or customer terms may use a different convention for weekends, holidays or business days.
Calendar days
Every day on the calendar, weekends and holidays included. This calculator counts calendar days.
Business days
Usually weekdays only, sometimes excluding public holidays too. If your agreement says business days, the date will be later than the one shown here.
Check the agreement
The wording in your contract or on the invoice decides which count applies. This calculator doesn't choose for you.

Weekends and holidays

What happens if a due date
falls on a weekend?

The calculator shows the date the count produces — a Saturday stays a Saturday — and says so beside the result. It doesn't move the date to Friday or Monday, and it doesn't check public holidays. If your agreement moves weekend or holiday due dates, apply that rule to the date shown.

Three dates

Invoice date vs
due date.

Net terms count from the invoice date. The payment date is a separate fact: it's whenever the money actually arrives.
Invoice date
The date the invoice is issued, printed on the invoice. Net terms count from here.
Due date
The last day to pay under the terms: the invoice date plus the term's days.
Payment date
The day the money actually arrives. It can be before, on or after the due date.

Accounts receivable

Why payment terms matter
for what you're owed.

An invoice is part of your accounts receivable from the day it's issued until it's paid. The due date is the line between an invoice that's still within its terms and one that's overdue, and how far past it an invoice is shows which balances need following up first. For what to write as the date approaches and passes, use these reminder emails for before and after the due date.

In RecordSplit

Due dates on every
invoice you issue.

In RecordSplit's invoicing, you set a default number of days until payment is due, and each new invoice's due date is filled in as the issue date plus that many calendar days — the same count this calculator uses. You can adjust an invoice's due date while it's still a draft, before issuing it to your customer. You record payments in full or in part as they arrive, and Receivables lists unpaid and partially paid invoices by customer and by how many days past due they are. You can send a payment reminder when you choose; nothing is sent automatically. RecordSplit doesn't collect card payments, charge late fees or add interest. Overdue invoices also show on the Dashboard.

Invoice due date questions

How do I calculate an invoice due date?
Take the invoice date and add the number of days in the payment terms: 30 for Net 30, 60 for Net 60. Count every calendar day, starting the day after the invoice date. An invoice dated October 1, 2026 on Net 30 terms is due October 31, 2026.
What does Net 30 mean on an invoice?
Net 30 means the full amount is due 30 days after the invoice date. This calculator counts those 30 days as calendar days, weekends and holidays included.
Is Net 30 calendar days or business days?
This calculator counts calendar days. If your contract or the invoice says business days, the due date will be later than the one shown here, so count business days instead.
What if the due date falls on a weekend or a holiday?
The calculator shows the date the count produces and doesn't move it. Some businesses move a weekend due date to the next weekday or the one before; your contract or customer terms decide that, not this calculator.
Does Net 30 start from the invoice date or the date it's received?
This calculator counts from the invoice date. Some terms count from another starting point, such as delivery or the end of the month. Check what your terms say.
What does due on receipt mean?
Payment is due as soon as the invoice is received. The calculator treats it as due on the invoice date itself.
Does the calculator handle end-of-month (EOM) terms?
No. End-of-month terms count from the end of the month instead of the invoice date. This calculator handles Net terms counted from the invoice date, plus a custom number of days.
Does it work out late fees or interest?
No. It finds the due date only. It doesn't calculate late fees, interest, penalties or grace periods. For a late charge at a rate or fee you've already agreed, use the free late fee calculator.
Is the calculated due date legally binding?
No. It shows the date your chosen terms produce when counted in calendar days. What a customer actually owes, and when, depends on your agreement and where you do business. It isn't legal advice.
Is anything I enter saved or sent anywhere?
No. The calculation runs in your browser. The invoice date, terms and result aren't stored, put in the page address or sent to RecordSplit.

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