Accounts Payable Turnover Calculator
How fast you pay suppliers.
Calculate accounts payable turnover and days payable outstanding from supplier purchases and average AP. Free educational tool.
What this tool does
Accounts payable turnover shows how often a business cycles through its supplier payments in a given period. This calculator divides total supplier purchases by average accounts payable to produce a turnover ratio, then converts that into days payable outstanding—the average number of days between when purchases are made and when they're paid. A higher turnover means faster payment cycles; a lower turnover suggests longer payment periods. The result reflects only the relationship between purchase volume and outstanding payables, assuming consistent purchasing patterns and a standard 365-day year. This calculation is useful for comparing payment behaviour across periods or against other businesses, though it doesn't account for seasonal variations, payment terms differences, or changes in supplier mix.
Quick answer: with the default values, the result is 12.00 (AP Turnover Ratio). Adjust the values below for your own figures.
Enter Values
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Formula Used
Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
AP turnover measures how many times per year a business pays off its suppliers. Divide total supplier purchases by average accounts payable balance. Inverse gives Days Payable Outstanding (DPO), the average number of days taken to pay suppliers. Most businesses settle in 30-60 days; supermarkets famously push to 90+ days using scale leverage.
6M purchases against 500k average AP gives turnover 12.0, DPO of 30 days. That's on-time payment within standard net-30 terms. Stretch to 1.5M average AP and turnover drops to 4.0, DPO 90 days - supplier relations strained, likely paying late fees or losing early-pay discounts.
Paying slower (lower turnover, higher DPO) improves cash position but damages supplier goodwill. top-tier businesses negotiate 60-90 day terms contractually rather than paying late - the cash benefit stays but the supplier relationship remains intact. Any consistent stretch beyond contract terms is a signal of cash problems.
Quick example
With total supplier purchases of 6,000,000 and avg accounts payable of 500,000, the result is 12.00. Change any figure and watch the output shift — it's often more useful to see the pattern than to memorise the formula.
Which inputs matter most
You enter Total Supplier Purchases and Avg Accounts Payable. Not every input has equal weight. Adjusting one input at a time toward extreme values shows which ones move the result most.
What's happening under the hood
AP turnover = purchases ÷ avg payables. Days Payable Outstanding = 365 ÷ turnover. The formula is listed in full below. If the number looks off, you can retrace the calculation by hand — that's the point of showing the working.
Reading a low result
A disappointing result is information, not a judgement. The input that dragged the figure down most is usually where a single change has the largest effect, since depth on the worst input tends to move the result more than spreading effort across every input at once.
What this doesn't capture
The result reflects only the inputs you provide and the assumptions built into the formula. It is a simplified model rather than a complete picture, and factors specific to your situation may matter just as much.
£6,000,000 purchases ÷ £500,000 avg AP = 12.00.
Inputs
| Days Payable Outstanding | 30.4 days |
|---|---|
| Total Purchases | $6,000,000.00 |
| Avg Payables | $500,000.00 |
| Payment Speed | Normal |
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
This calculator computes accounts payable turnover by dividing total supplier purchases by the average accounts payable balance over the measurement period. The result indicates how many times a business cycles through its payable obligations annually. The calculator then derives Days Payable Outstanding by dividing 365 by the turnover ratio, expressing the average number of days between purchase and payment. The model assumes a consistent payment pattern throughout the period and treats the average accounts payable as representative of the full year. It does not account for seasonal variations, changes in supplier terms, payment delays, or differences in payment timing within the period. The calculation uses a standard 365-day year and does not adjust for leap years or specific business calendars.
Frequently Asked Questions
What's a good AP turnover?
Higher or lower turnover better?
Does this include payroll?
How do I improve working capital from AP?
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