Definition
Accounts payable (AP) represents money your business owes to vendors, suppliers, and creditors for goods or services received but not yet paid for. It's a current liability on your balance sheet.
Why It Matters
AP management is the other side of the cash flow equation. While accounts receivable is about getting paid faster, accounts payable is about paying strategically — not too early (wasting cash) and not too late (damaging relationships).
Smart AP management means taking advantage of full payment terms. If a vendor offers Net 30, paying on day 5 means your cash sat idle for 25 days. Paying on day 28 keeps that cash working for you.
How to Calculate DPO
Days Payable Outstanding = (Accounts Payable / Cost of Goods Sold) x Number of Days
Example: Your business has $150K in AP and $1.8M in annual COGS. DPO = ($150K / $1.8M) x 365 = roughly 30 days. That means you're paying vendors, on average, about a month after receiving their invoice. If your DSO is 45 days, you're paying suppliers before customers pay you — a cash conversion cycle gap that eats working capital.
Key Metrics
- Days Payable Outstanding (DPO): Average days to pay vendors. Higher means you're holding cash longer.
- AP Aging: Breakdown of what's due now, in 30 days, 60 days, etc.
- Cash conversion cycle: DPO combined with DSO and inventory days — the full picture of how fast cash moves through your business.
What to Watch For
- Paying too early: Unless a vendor offers an early payment discount worth more than your cost of capital, paying before the due date is giving away free float.
- Paying too late: Chronically late payments lead to strained vendor relationships, lost discounts, and sometimes supply disruptions. Some vendors quietly move slow payers to the back of the priority queue.
- Ignoring early payment discounts: A “2/10 Net 30” discount is equivalent to a 36% annualized return. If you have the cash, that's almost always worth taking.
Benchmarks
Typical DPO ranges from 30-45 days for most SMBs. Retailers and manufacturers often run higher (45-60 days) because of volume-based vendor agreements. Professional services firms tend to run lower (15-30 days) since their payables are mostly software and subcontractors. The goal is not to maximize DPO at the expense of vendor relationships — it's to match your payables timing to your receivables timing so cash flows smoothly through the business.
How CentSight Helps
CentSight tracks all outstanding payables, forecasts upcoming payment obligations, and helps you time payments to optimize cash flow. It also flags vendors that have changed terms or quietly raised prices.