Finance Calculator
Accounts Payable Days Calculator
Calculate how many days on average your business takes to pay suppliers. Enter your trade payables and annual cost of sales to see your creditor days (DPO) and an instant payment assessment.
Enter your payables and cost of sales
How are accounts payable days calculated?
Accounts payable days — also known as creditor days or days payable outstanding (DPO) — measures the average number of days a business takes to pay its suppliers. It is a key component of the cash conversion cycle and reflects how effectively a business uses supplier credit.
AP Days = (Trade Payables / Cost of Sales) — 365
Daily Outgoing = Cost of Sales / 365
Trade payables is the total amount owed to suppliers at a given point in time. This is found on the balance sheet under current liabilities.
Cost of sales (or cost of goods sold / annual purchases) represents the direct costs of producing goods or delivering services over a 12-month period. Using purchases gives a more accurate figure, but cost of sales is commonly used.
A higher DPO means you hold onto cash longer before paying suppliers, which can improve short-term liquidity. However, this must be balanced against the need to maintain good supplier relationships and access to early payment discounts.
Assumptions and caveats
- •The calculation uses a point-in-time payables balance. This may not reflect typical payment patterns if your business has seasonal purchasing cycles.
- •Using cost of sales rather than total purchases will give an approximation. For greater accuracy, use the total purchases figure from your accounts.
- •This calculator does not distinguish between trade payables and other creditors such as tax or accruals. Use trade payables only for the most accurate DPO.
- •Industry norms vary. Construction and manufacturing businesses often have longer payable days than service businesses.
Frequently asked questions
Accounts payable days — also known as creditor days or days payable outstanding (DPO) — measures the average number of days a business takes to pay its suppliers after receiving an invoice. It is a key component of the working capital cycle and indicates how effectively a business manages its supplier payment terms.
Not necessarily. While a higher DPO means you retain cash for longer, excessively slow payments can damage supplier relationships, result in loss of early payment discounts, and in some cases lead to supply chain disruption. The ideal DPO balances cash preservation with maintaining good supplier relationships.
Consistently paying beyond agreed terms can strain supplier relationships. Suppliers may increase prices, reduce credit limits, demand payment in advance, or refuse to supply altogether. Maintaining a DPO that aligns with agreed payment terms builds trust and can improve your negotiating power.
A higher DPO means the business holds onto cash for longer before paying suppliers, which can improve short-term liquidity. However, it should be considered alongside debtor days and inventory days as part of the full cash conversion cycle. Extending DPO only helps if it does not create supply chain or relationship risks.
Need to optimise your supplier payments?
Speak to the Spark team about working capital solutions that help you manage cash flow while maintaining strong supplier relationships.
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