Invoice due date calculator
Enter the invoice date and payment terms to get the due date right away: 30, 60 or 90 days from the invoice date or from the end of the month, even with a fixed payment day.
Invoice date (DF) or end of month (DFFM)
With 30 days from invoice date you count 30 calendar days from the invoice date: an invoice dated 10 March is due on 9 April. With 30 days end of month (DFFM in Italy) you first go to the end of the invoice month and then add the months: the same invoice is due on 30 April.
For 60 and 90 days end of month, common practice counts whole months: a March invoice at 60 days end of month is due on 31 May. The calculator follows this rule.
The fixed payment day
Many companies pay on a fixed day of the month, such as the 10th or 15th. If the calculated due date falls after that day, payment moves to the fixed day of the following month. Enter it in the optional field and the calculation takes it into account.
Legal maximum terms in Italy
Between businesses the standard term is 30 days; parties can agree a longer one, which as a rule does not exceed 60 days unless expressly agreed and not grossly unfair (Legislative Decree 231/2002). Late-payment interest runs after the due date. If a client is late, send a payment reminder.
Every due date, from your invoices
CassaChiara reads Italian XML e-invoices or the cassetto fiscale ZIP and builds the schedule of payments in and out by itself, with a 90-day cash forecast.
Try it free with your invoices See pricingFrequently asked questions
What does 60 days end of month mean?
Sixty days from the end of the month the invoice was issued in. A March invoice is due on 31 May.
What if the due date is a Sunday?
Bank transfers and RiBa usually settle on the next working day. The calculator flags it.
Where is the due date in an Italian e-invoice?
In the DatiPagamento block, field DataScadenzaPagamento. If it is missing, the agreed or legal term applies.
Can I calculate all due dates at once?
Yes: CassaChiara reads XML invoices or the cassetto fiscale ZIP and builds the full payment schedule in seconds.