Payment terms calculator: when is a business invoice late in Ireland?
When does a business invoice become late in Ireland? Enter the invoice date (and the date of receipt if you know it): the calculator shows the default due date and the 60-day limit, with the days left.
Calculating…
Payment terms between Irish businesses
If you agreed a payment date with your customer, that date applies. If you did not, S.I. 580/2012 makes the invoice payable 30 calendar days after the customer received it.
Agreed terms longer than 60 days are valid only if they were expressly agreed and are not grossly unfair to the supplier. The calculator shows the 60-day date so you can see when this extra condition starts.
For public authorities, the limit is 30 days (60 if justified and agreed).
When the receipt date is not entered, the calculator assumes the invoice was received on its date. Late payment interest starts the day after the due date.
Official sources
- Irish Statute Book — S.I. No. 580 of 2012, Late Payment in Commercial Transactions Regulations
- Department of Enterprise, Tourism and Employment — Late payment in commercial transactions
Rules checked on 20 October 2026. Free tool for information only: it is not legal or tax advice. The rules are checked against the official sources listed on this page; check your own situation before acting.
Frequently asked questions
What if no payment terms were agreed?
The invoice is due 30 calendar days after the customer received it. If the date of receipt is uncertain, or if the invoice arrived before the goods or services, the 30 days run from delivery.
Can I agree payment terms longer than 60 days?
Only if they are expressly agreed and not grossly unfair. Unfair terms can be challenged before the Circuit Court.
What about public bodies?
Under S.I. 580/2012, public authorities have 30 days, or 60 days if this is justified and agreed.
Further reading
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