How the calculation works
Saving = invoice amount × discount. Dates are calendar days after the invoice date.
A worked example
For 1,000 on 2/10 Net 30 terms, pay 980 within 10 days to save 20; otherwise 1,000 is due within 30 days.
Use the result carefully
This compares an offer you enter. It does not add these terms to a contract or decide whether a payment qualifies. Tax treatment is outside the calculation.