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How days payable outstanding works

Days payable outstanding is how long, on average, the firm takes to pay suppliers. On this sheet DPO is 30 days. A 105 day operating cycle minus that 30 is a 75 day cash conversion cycle. Stretch DPO to 100 under a 50 day loop and CCC turns negative.

Cash conversion cycle

75 days

Inventory and receivables hold cash for 105 days. Payables give 30 days of that back.

Operating cycle (DSO + DIO)
105 days
Days payable outstanding
30 days
Cash conversion cycle
75 days

How long customers take to pay. Receivables over daily sales.

How long stock sits. Inventory over daily cost of goods.

How long the firm takes to pay suppliers. A larger figure shortens the cycle.

On this page

Next on Models and deals

Receivables turnover

In short

  • DPO is the supplier clock. On the first sheet it is 30 days.
  • Operating cycle 105 minus 30 is a 75 day CCC. DPO is the whole gap between those two.
  • DPO 100 under a 50 day operating cycle makes CCC minus 50 days. Suppliers more than fund the loop.
  • DPO 40 with equal clocks of 40 leaves a 40 day CCC. Matching DPO to DSO does not zero the residual.
  • How the cash conversion cycle works owns the residual. This page owns the subtraction.

How long the bill sits

Days payable outstanding asks how long, on average, the firm takes to pay its suppliers:

DPO=PayablesCOGS/365DPO = \frac{\text{Payables}}{\text{COGS}/365}

This calculator does not run that division. DPO is an input. Type the days. On the first sheet that is 30.

The operating cycle is 45 plus 60, 105 days. Minus this 30, the cash conversion cycle is 75 days. DPO is the entire difference. The cash conversion cycle calculator on this page is that subtraction. This page owns the 30.

Payables turnover is 365 over this DPO. DSO against DPO is customers against suppliers.

Stretch it far enough and CCC goes negative

DSO 30, DIO 20, DPO 100. Operating cycle 50 days. CCC minus 50 days.

Suppliers are paid 50 days after the cash from the sale is already in. That is a source of cash, not a bug in the formula. It is also not free. Stretch DPO far enough and suppliers raise prices, cut service, or walk. The formula will still print a prettier CCC.

Matching DPO to DSO does not zero the cycle

DSO 40, DIO 40, DPO 40. Operating cycle 80 days. CCC 40 days. The payable clock matched the customer clock and still left 40 days for the firm to fund, because inventory is also in the loop.

Cost of goods, not sales

Payables usually sit over daily cost of goods, because the invoices are for goods. Putting sales in that denominator mixes a selling price into a cost clock, and the days will not match a DPO that was built on COGS. Some sheets use 360. Name the year.

DSO usually sits on sales. Adding a sales-based DSO to a COGS-based DPO is the standard construction. Mixing the denominators inside one clock is not.

A prettier CCC can be a more expensive supplier

The cash conversion explorer holds DSO and DIO still and lets you drag DPO. Watch CCC fall. Then ask what the extra days cost in price or service. Working capital is the dollar version of the same loop.

What this page is not doing

It is not a vendor-terms engine, not a turnover table, and not a target of 30 days. The three sheets are DPO 30 (CCC 75 under a 105 day operating cycle), DPO 100 (CCC minus 50 under a 50 day loop), and DPO 40 (CCC 40 under an 80 day loop). This is educational material, not financial advice.

Worked examples

DPO 30, the whole gap

DSO 45, DIO 60, DPO 30. What is DPO doing to the cycle?

  1. Operating cycle: 45+60=10545 + 60 = 105 days.
  2. CCC: 105−30=75105 - 30 = 75 days.
  3. DPO of 30 is the entire difference.

DPO is 30 days. The operating cycle is 105 days. CCC is 75 days.

DPO 100, a negative CCC

DSO 30, DIO 20, DPO 100. What is CCC?

  1. Operating cycle: 30+20=5030 + 20 = 50 days.
  2. CCC: 50−100=−5050 - 100 = -50 days.

DPO is 100 days. The operating cycle is 50 days. CCC is minus 50 days. Suppliers more than fund the loop.

DPO 40 with equal clocks

DSO 40, DIO 40, DPO 40. What is DPO doing?

  1. Operating cycle: 40+40=8040 + 40 = 80 days.
  2. CCC: 80−40=4080 - 40 = 40 days.

DPO is 40 days. The operating cycle is 80 days. CCC is 40 days. Matching DPO to DSO did not zero the residual.

Common questions

Does this calculator compute DPO from payables?

No. DPO is an input. Payables over daily cost of goods is the usual construction, on a 365 day year unless you named 360.

Is a higher DPO always better?

It shortens CCC. It can also raise the price the supplier charges. The formula does not see that cost.

Is 30 days a target?

It is the teaching-sheet supplier clock. This is educational material, not financial advice.

Keep reading

This page is educational material, not financial advice. The figures come from the formula shown and assume the inputs you enter hold for the whole term. Your own rate, fees, taxes and timing will differ, so treat the output as arithmetic to check a decision against, not as a recommendation.