Days payables outstanding
How long you take to pay your suppliers.
01 What it is
Why anyone looks at this number
How long you take to pay your suppliers.
It is the one part of the cash cycle where a higher number helps you — up to the point where suppliers price it back in or stop prioritising you.
02 The formula
How it is worked out
Days payables outstanding = (accounts_payable ÷ cogs) × days_in_period grain : month × supplier × entity unit : days source : Accounts payable subledger
Compare against the terms you actually agreed. Paying at 45 days on 30-day terms is not working capital management, it is a supplier relationship problem waiting to happen.
03 Worked example
The same number, with real inputs
| Payables | €4.03m |
| Annual COGS | €32.0m |
| Days | 365 |
| Calculation | (4.03 ÷ 32.0) × 365 |
| Result | 46 days |
Two days more is about €175k of cash. But if terms are 45 days, you are already at the limit — the next two days come out of goodwill.
04 What moves it
Four things that actually change this number
Terms negotiated
The legitimate lever, and the one that survives an audit.
Payment run frequency
Weekly runs versus daily changes average DPO by several days on their own.
Early-settlement discounts
Taking a 2% discount for paying 20 days early is usually good value.
Invoice processing speed
An invoice stuck in approval is not clever cash management.
05 Where the number lives
The system, the record and the fields
| System of record | Key record | Fields you need |
|---|---|---|
| Accounts payable subledger | Open item on the vendor account, joined to Purchase invoice | invoice_date, due_date, payment_date, terms, early_settlement_discount |
Compare against the terms you actually agreed. Paying at 45 days on 30-day terms is not working capital management, it is a supplier relationship problem waiting to happen.
06 How it goes wrong
Three ways this metric misleads people
Stretching without agreement
Unilateral delay shows up as higher DPO and, later, as higher prices or lost priority in a shortage.
Fix: Negotiate terms; do not simply pay late.Missing settlement discounts
Chasing DPO can cost more than it saves when discounts are on the table.
Fix: Compare the discount to your cost of capital before defaulting to slow payment.Excluding capex payables
Comparing total payables to COGS mixes two populations and inflates the days.
Fix: Use trade payables against trade purchases only.08 Questions
Frequently asked
Does a high DPO always mean good cash management?
Not necessarily. It can mean you negotiated well, or it can mean invoices are stuck in approval and suppliers are unhappy. The two look identical in the ratio and completely different in a shortage.
Should we take early payment discounts?
Compare the annualised discount rate to your cost of borrowing. A 2% discount for paying 20 days early is worth far more than most credit lines cost.
One definition, everywhere it is used
SCIKIQ stores this metric once and serves it to every dashboard, board pack and agent that asks.