Days Payable Outstanding Calculator
Reviewed by Hamza Gujjar, Algorithm Architect & Software Developer
Last updated: July 27, 2026How long a company takes to pay its own bills
Days Payable Outstanding measures the average time between receiving a supplier invoice and actually paying it - a complementary metric to Days Sales Outstanding, but from the payables side of the business.
Worked example
For $40,000 in accounts payable, $500,000 in COGS, over a 365-day period:
DPO = (40000 / 500000) x 365 = 29.2 days
Frequently asked questions
Is a higher DPO always better? Not necessarily - a higher DPO improves the company's own cash flow by holding onto cash longer, but pushing it too far can strain supplier relationships, risk losing early-payment discounts, or signal genuine cash flow trouble rather than deliberate cash management.
How does this relate to the cash conversion cycle? DPO is subtracted from DSO plus inventory days in the cash conversion cycle formula, since payables represent cash the company hasn't yet paid out, effectively financing part of its operating cycle.