Accounts payable KPIs: formulas and benchmarks

Ardent Partners reports an all-in average of $9.84 per invoice and $2.65 for Best-in-Class teams in its 2025 report; its 2026 research cycle puts the average at $9.90. APQC's cross-industry data shows a median of $5.83, with the top 25% at $2.07 or less and the bottom 25% at $10 or more. Definitions differ, so compare your number with one source consistently.

Calculate yours with the cost per invoice calculator, and see the full breakdown in the cost per invoice guide and the cost to process an invoice report.

Ardent reports 8.2 days on average and 2.9 days for Best-in-Class teams (2025); its 2026 figure is 11.6 days. APQC reports top performers receiving an invoice and scheduling payment in 2.8 days or faster, while bottom performers take a week or longer. Slow approvals are the usual cause: they tie for the top AP challenge at 48% in Ardent's State of AP 2026.

Estimate yours with the processing time calculator and compare against the invoice processing time benchmarks.

The average is 18.4% and Best-in-Class teams average 11.1% (Ardent 2025); Ardent's 2026 figure is 19.9%. Count each invoice once even if it has several problems, and tag a primary cause so you can fix the biggest one first. More in the invoice exception rate guide and the exception rate benchmark report.

We have not found a public, sourced benchmark for first-pass match rate, so we do not quote one. The closest published measure is the straight-through rate, which counts invoices that need no human touch at all: 35.4% on average and 51.0% for Best-in-Class teams (Ardent 2025), and 38.3% in Ardent's 2026 figures. PO coverage drives both: Best-in-Class teams link 84.0% of invoices to a PO against 47.3% for all others.

APQC puts the median around 40 days across industries, about 50 days at the 75th percentile and about 30 at the 25th (2024). J.P. Morgan's Working Capital Index reports 51.2 days for the S&P 1500 in 2023. A higher DPO keeps cash in the business, but past agreed terms it becomes late payment. Calculate yours with the DPO calculator and compare by sector in DPO by industry.

In APQC's data, duplicate or erroneous payments are 0.8% of annual disbursements at top performers and 2% at bottom performers. A related APQC measure, payments made error-free the first time, is 98% for top performers, 95% for the middle and 88% for the bottom. Estimate your exposure with the duplicate payment risk calculator, and see how to prevent duplicate payments.

We have no sourced benchmark for this KPI, so set your target from your own baseline. Whether a discount is worth taking depends on its annualised return against your cost of cash: work it out with the early payment discount calculator. Missed discounts are usually a cycle-time problem: the invoice was still waiting for approval when the discount date passed.

APQC reports 20,964 invoices per AP FTE at the 75th percentile against 6,488 at the 25th, more than three times as many. Use it to size the team and to measure the effect of automation, not as a target for individuals. For which role owns each KPI, see our AP job descriptions.

1. Write down each formula and data source so the number means the same thing every month.
2. Measure a three-month baseline before setting targets.
3. Compare with one published source per KPI, not a mix.
4. Review monthly; when a KPI moves, record why.
5. Restate past months if you change a definition.

For a quick estimate of what better numbers are worth, try the AP automation ROI calculator.

Invoices are matched to purchase orders and receipts within tolerances you set globally or per supplier. Each invoice is checked against past invoices from the same vendor for duplicates. Invoices that fail become exceptions with a reason, an owner and an SLA, and the controls monitor shows SLA breaches, tolerance breaches and invoices waiting more than 48 hours in one view. See exception management in Aequo AP.