Invoice Due Date Calculator
Enter an invoice date and select payment terms to get the exact due date. Covers Net 30, Net 45, Net 60, Net 90, End of Month, EOM + 15, and custom. Shows days remaining, overdue status, weekend warning, and a follow-up checkpoint. If the due date falls on a weekend or public holiday, use the Real Due Date Calculator to find the adjusted working-day deadline.
Quick select a payment term:
Enter the invoice date and payment terms — get the exact due date, days remaining or overdue, and a suggested follow-up checkpoint.
After calculating, copy the result into your workflow instead of searching for the calculator again.
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Formula
Due Date = Invoice Date + Payment Term (in calendar or business days)
Calendar days: add the term number directly to the invoice date regardless of weekends. Business days: advance one weekday at a time, skipping Saturday and Sunday. End of month: last calendar day of the invoice month, optionally plus 15 days.
Worked Examples
Scenario 1 — Net 30 calendar days:
Invoice issued Monday 2 March 2026. Terms: Net 30 calendar days.
Due date: 2 March + 30 days = Thursday 1 April 2026
Scenario 2 — Net 30 business days (same invoice):
Same invoice, but terms specify Net 30 business days.
30 weekdays from 2 March ≈ Wednesday 13 May 2026
That is 6 weeks and 4 days later — a material difference.
Scenario 3 — End of month:
Invoice issued 10 February 2026. Terms: End of month.
Due date: last day of February = Saturday 28 February 2026
Scenario 4 — Checking an overdue invoice:
A Net 60 invoice was issued on 1 January 2026. Today is 15 March 2026. Is it overdue?
Due date: 1 January + 60 days = 2 March 2026
Today (15 March) − Due date (2 March) = 13 days overdue
Always confirm whether your contract specifies calendar or business days. Net 30 in calendar days is significantly different from Net 30 in business days.
Common Mistakes
- Assuming Net 30 means business days. Standard Net 30, Net 60 etc. almost always refer to calendar days unless the contract explicitly states otherwise.
- Starting the count from the day after. Day 0 is the invoice date. Day 1 is the next day. A Net 7 invoice dated Monday is due the following Monday.
- Ignoring weekend and holiday adjustments. If the due date falls on a Saturday, Sunday or public holiday, the operational deadline usually moves to the next business day.
- Confusing End of Month with Net 30. End of Month means due on the last day of the invoice month. Net 30 adds 30 days to the invoice date — a different result for most invoice dates.
Guide
How to Use
- 1
Enter the invoice date
The date the invoice was issued to the client.
- 2
Select payment terms
Choose from Due on Receipt, Net 7 through Net 90, End of Month, EOM + 15 or a custom day count.
- 3
Choose calendar or business days
Most standard net terms use calendar days. Switch to business days only if your contract specifies it.
- 4
Review the result
The result shows the due date, days remaining or overdue status, a follow-up checkpoint date, and a weekend warning if applicable.
- 5
Copy the follow-up note
Copy a ready-to-use professional note for email, CRM or your invoice checklist.
Next Steps
What to do next
Adjust due date for weekends / holidays
Find the real operating due date after weekends and public holidays.
Add VAT to the invoice
Get your net, VAT, and gross total before you send.
Count business days until due
See exactly how many working days remain before the due date.
Add N business days to any date
Find the date that is exactly 10, 14, or 30 working days from today.
Invoice & Payment Workflow
Real Due Date Calculator
Adjust due dates for weekends and public holidays
VAT Calculator
Add or remove UK VAT (20%, 5%, zero) from invoice amounts
UK VAT Calculator
Net/VAT/gross breakdown at HMRC rates
Margin Calculator
Check profitability before sending the invoice
Add Business Days
Find the date N working days from any start date
Business Days Calculator
Count working days between any two dates
Working Days by Country
Common invoice payment terms — quick reference
All net terms count calendar days from the invoice date unless the contract says otherwise.
| Term | Due date |
|---|---|
| Due on receipt | Invoice date itself |
| Net 7 | 7 calendar days from invoice date |
| Net 14 | 14 calendar days from invoice date |
| Net 30 | 30 calendar days from invoice date |
| Net 45 | 45 calendar days from invoice date |
| Net 60 | 60 calendar days from invoice date |
| Net 90 | 90 calendar days from invoice date |
| End of Month (EOM) | Last day of the invoice month |
| EOM + 15 | 15 days after end of invoice month |
| 2/10 Net 30 | Day 10 (2% discount) or day 30 (full) |
For a full explanation of each term with worked examples, see the Invoice Payment Terms Guide.
Using 2/10 Net 30 (early payment discount)?
2/10 Net 30 offers a 2% discount if the buyer pays within 10 days of the invoice date; the full amount is due by day 30 if not. To track both windows, run this calculator twice — once with a custom 10-day term for the discount deadline, and again with Net 30 for the final payment deadline.
Other early payment variants follow the same pattern: 1/15 Net 45 = 1% discount if paid within 15 days, otherwise full amount due at 45 days.
End-of-month payment terms explained
End of Month (EOM) means payment is due on the last calendar day of the month in which the invoice was issued. An invoice dated 5 February under EOM terms is due on 28 February (or 29 February in a leap year). This differs from Net 30 — which would give a due date of 7 March.
EOM + 15 adds 15 calendar days after the end of the invoice month. An invoice dated 10 March under EOM + 15 terms is due on 15 April (31 March + 15 days).
End-of-month terms are common in wholesale, trade accounts, and industries where all invoices from a calendar month are settled together. They simplify accounts payable by consolidating multiple invoices into a single monthly payment run.
Net 45, Net 60 and Net 90 — worked examples
Net 45 — professional services
Invoice date: 10 February. Net 45 calendar days. Due date: 27 March. If 27 March falls on a public holiday period (e.g. Easter weekend), some contracts require adjustment to the next business day. Use the Real Due Date Calculator to check.
Net 60 — manufacturing / distribution
Invoice date: 15 January. Net 60 calendar days. Due date: 16 March (31 days remaining in January + 28/29 days in February = 59, plus 16 March). Check near bank holidays if your client is in a different country.
Net 90 — seasonal or large enterprise
Invoice date: 1 October. Net 90 calendar days. Due date: 30 December (91 days — adjust by one: 29 December). Common in retail supply chains ahead of peak trading. Verify the exact date with this calculator.
Net 30 business days — contract terms
Invoice date: 3 March. Net 30 business days. Due date: approximately 14 May (6 weeks and 3 days). Business-day terms are significantly longer than calendar-day terms. Always check which applies.
Why weekends and public holidays affect operational follow-up
A calculated due date may fall on a Saturday, Sunday, or bank holiday. When that happens, banks cannot process payments and accounts teams are not working — so the practical deadline for follow-up or receipt shifts to the next business day.
This matters for accounts receivable teams: if you plan to chase payment on the due date and that date is a weekend, your follow-up email or call will be delayed by at least two days. For cross-border invoices, the relevant public holiday calendar depends on the buyer's country — not yours.
This calculator flags weekend due dates with a warning. Use the Real Due Date Calculator to find the next actual business day, or the Business Days Calculator to count exactly how many working days remain before the deadline.
Common payment terms by industry and region
UK B2B (statutory)
Under the Late Payment of Commercial Debts Act, the statutory default payment period is 30 days. Statutory interest provisions may apply to late B2B payments. Verify the applicable rules for your situation with a professional.
US B2B (typical)
Net 30 is the most common US B2B term. Net 45 and Net 60 are used in manufacturing and distribution. The Federal Prompt Payment Act sets payment rules for US government agencies — check the applicable requirements for your contract.
EU cross-border
EU Late Payment Directive (2011/7/EU) caps payment terms at 30 days for public authority transactions and 60 days for B2B unless explicitly agreed otherwise. Verify the rules for your specific country and situation.
Construction and property
Payment chains in construction often use Net 14, Net 30, or payment tied to project stage completion. Retention clauses can extend the effective payment period significantly.
How finance teams use this calculator
Practical ways accounts receivable and finance teams integrate the Invoice Due Date Calculator into day-to-day work.
Invoice follow-up checklists
Add a link to this calculator in your AR checklist or invoice follow-up SOP. For each invoice raised, record the calculated due date and follow-up checkpoint date alongside the invoice reference. The copyable follow-up note in the result area produces a professional summary ready to paste into CRM deal notes or email templates.
Checking operating due dates before chasing
Before sending a payment reminder, confirm the due date is not a weekend or public holiday. Chasing payment before the real operating deadline is unnecessary and can damage supplier relationships. Run the Real Due Date Calculator on any due date that falls near a weekend or holiday period.
Cash flow forecasting
Use the "days until due" figure from the result to build a receivables horizon. For each outstanding invoice, log the due date and days remaining. The Business Days Calculator lets you count exactly how many working days sit between today and any due date — useful for weekly cash flow reporting.
VAT invoice preparation
For UK VAT-registered businesses, confirm both the VAT-inclusive gross amount and the payment due date before sending an invoice. The VAT Calculator gives you the net, VAT, and gross breakdown; this calculator gives you the due date from the same invoice date.
Embedding in Notion, CRM notes and Slack
Copy the workflow link from any result and paste it into a Notion invoice tracker, a Salesforce or HubSpot deal note, a Slack payments channel, or a Google Sheets AR dashboard. The link opens the calculator ready to use. No entered values are included in the URL.
Common calculations
When is Net 30 from today?
Net 30 from today (8 June 2026) is due in 30 calendar days. Use the calculator above — set today as the invoice date and select Net 30.
When is Net 45 due from a given invoice date?
Net 45 means payment is due 45 calendar days after the invoice date. Example: invoice dated 1 March → due 15 April. Common for professional services and US retail accounts. Select Net 45 in the calculator above.
When is Net 60 due?
Net 60: payment due 60 calendar days after the invoice date. Example: invoice 15 January → due 16 March (Jan has 31 days, Feb has 28/29 days). Common in manufacturing and distribution. Check for bank holidays near the due date.
How does End of Month (EOM) work?
EOM means payment is due on the last day of the month in which the invoice was issued. Invoice dated 10 March under EOM terms → due 31 March. Invoice dated 5 February → due 28 Feb (or 29 in a leap year). This differs from Net 30 which counts 30 days forward.
How do I track both deadlines for 2/10 Net 30?
2/10 Net 30 gives a 2% discount if paid within 10 days, with the full amount due by day 30. Run this calculator twice: once with a custom 10-day term for the discount window, and once with Net 30 for the final deadline.
How do I check if an invoice due date falls on a working day?
The calculator above flags weekend due dates. To find the next actual business day (adjusted for weekends and public holidays), use the Real Due Date Calculator. For cross-border invoices, use country-specific working days calculators.
Common invoice payment questions answered
When is Net 30 from today?
Net 30 from today means the invoice is due 30 calendar days from now. If today is 8 June 2026, the due date is 30 days from today.
Use the dedicated Net 30 from today pageWhat is Net 45 from an invoice date?
Net 45 means payment is due 45 calendar days after the invoice date. An invoice dated 1 March is due on 15 April. This is common for professional services and US retail accounts.
Use the dedicated Net 45 from invoice date pageWhat are end of month payment terms?
End of Month (EOM) means payment is due on the last day of the month in which the invoice was issued. An invoice dated 10 January under EOM terms is due on 31 January. EOM + 15 adds 15 days after month-end.
What does 2/10 Net 30 mean?
2/10 Net 30 means the buyer gets a 2% early payment discount if they pay within 10 days of the invoice date. The full amount is due by day 30. Run this calculator twice to track both deadlines.
Next Steps
Next, you may also need
Not sure which deadline calculator to use?
Use the Business Deadline Checker to choose between invoice due dates, real operating deadlines, SLA timing and shipping cut-offs.
Business Deadline CheckerDecision guide
Which calculator do you need?
Guides
Related planning guides
For a full explanation of payment terms — Net 7, Net 30, EOM, and how operating due dates differ from calendar due dates — see the Invoice Payment Terms Guide. For broader deadline planning, see the Business Deadline Planning Guide.
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FAQ
Frequently Asked Questions
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