What Is Accounts Payable? Definition and How to Record AP

Search Fintrev

Search our guides, reviews and glossary.

Accounts payable (AP) is the money a business owes its suppliers and service providers for goods or services it has already received but has not yet paid for. It is recorded on the balance sheet as a current liability, usually settled within about 30 to 90 days under the supplier’s invoice terms. “Payables” and “AP” mean the same thing, and the term also refers to the department that processes and pays those bills.

What Accounts Payable Means

When a company buys on credit, the supplier delivers first and invoices later. Until the invoice is paid, the amount sits in accounts payable, and the business keeps the use of its cash for the length of the payment term.

AP is not an expense. The cost of what was bought shows up separately, either as an expense on the income statement or as an asset such as inventory or equipment. AP, a current liability on the balance sheet, only tracks the fact that the bill is still unpaid.

Common Payment Terms

Supplier invoices usually state terms in a shorthand format:

• Net 30: the full invoice amount is due within 30 days of the invoice or delivery date. Net 45, net 60 and net 90 work the same way with longer windows.
• 2/10 net 30: the buyer may take a 2% discount by paying within 10 days. Otherwise, the full amount is due in 30 days. A 1/10 net 30 term offers a 1% discount on the same schedule.

Early-payment discounts put a price on paying late. As a hypothetical example, on 2/10 net 30 terms, a buyer who skips the discount pays 2% more for 20 extra days of credit. Using the standard approximation:

Implied annual cost = (Discount ÷ (100% − Discount)) × (365 ÷ (Full term − Discount period))

= (2 ÷ 98) × (365 ÷ 20) ≈ 37.2%

That rate is far above most borrowing costs, which is why a business with spare cash often takes the discount. The calculation assumes the buyer pays on day 30 exactly.

What Counts as Accounts Payable

Typical items that land in AP include:

1. Supplier invoices for raw materials, components or merchandise bought for resale.
2. Contractor bills for outside services such as cleaning, security or IT support.
3. Subscriptions for software or data services billed after the service period.
4. Utilities such as electricity, water, phone and internet, invoiced after use.
5. Professional fees for legal, consulting or accounting work.
6. Maintenance of equipment or facilities billed on a periodic schedule.

Trade payables are the subset of AP tied directly to goods used in production or bought for resale. Some companies report them separately from other payables.

Several liabilities look similar but are usually kept out of AP:

• Notes payable: formal written borrowing agreements, often with interest and a set maturity.
• Accrued expenses: costs the business has incurred but not yet been invoiced for, such as wages earned by employees before payday or interest building up on a loan.
• Wages and taxes payable: amounts owed to employees and tax authorities rather than vendors.

The dividing line is the vendor invoice: an amount a supplier has billed for something delivered belongs in AP, while a cost estimated before a bill arrives is an accrual.

How to Record Accounts Payable

Recording AP follows double-entry bookkeeping, with an equal debit and credit in every entry. Debits increase assets and expenses and decrease liabilities; credits decrease assets and increase liabilities and revenue. AP is a liability, so it has a normal credit balance and is reduced by a debit.

When the goods or services are received:

• Debit the expense or asset account (increase)
• Credit accounts payable (increase)

When the bill is paid:

• Debit accounts payable (decrease)
• Credit cash (decrease)

Worked Example: Equipment Bought on Credit

A hypothetical company buys office furniture invoiced at $10,000, payable in 45 days.

Step 1: Purchase

• Debit Office Furniture (asset): $10,000
• Credit Accounts Payable: $10,000

Step 2: Payment, 45 days later

• Debit Accounts Payable: $10,000
• Credit Cash: $10,000

The liability is cleared. Assets end $10,000 lower in cash and $10,000 higher in furniture, so the balance sheet still balances.

Worked Example: Inventory With an Early-Payment Discount

A hypothetical restaurant orders $2,000 of ingredients on 2/10 net 30 terms and pays on day 8.

On delivery:

• Debit Inventory: $2,000
• Credit Accounts Payable: $2,000

On payment within the discount window:

• Debit Accounts Payable: $2,000
• Credit Cash: $1,960
• Credit Inventory (or Purchase Discounts, depending on the system used): $40

Had the restaurant paid on day 30, the entry would simply debit AP and credit cash for $2,000.

Accounts Payable in the Financial Statements

AP appears under current liabilities on the balance sheet, so it feeds directly into measures of short-term liquidity and working capital (current assets minus current liabilities).

On the cash flow statement, the change in AP appears in operating activities. An increase in AP adds to operating cash flow, since the company recorded costs without paying cash for them yet. A decrease subtracts from it, because cash went out to clear earlier bills. This is one reason free cash flow can swing from period to period without any change in underlying profitability.

Interpreting Changes in AP

A rising AP balance has two possible readings. The business may be using supplier credit more fully, for instance after negotiating longer terms or growing its purchases. Or it may be delaying payments because cash is short. A falling balance can mean the company is paying faster than it takes on new credit purchases, or that purchasing volume has dropped. Comparing the balance against purchases, cost of sales and the ratios below helps tell which applies.

Ratios That Use Accounts Payable

AP Turnover Ratio

The payables turnover ratio measures how many times a company pays off its average AP balance over a period, usually a year.

AP Turnover = Net Credit Purchases ÷ Average Accounts Payable

Average AP is typically (beginning AP + ending AP) ÷ 2.

Hypothetical example: net credit purchases of $130 million, beginning AP of $25 million and ending AP of $15 million give average AP of $20 million.

AP Turnover = $130M ÷ $20M = 6.5 times per year

A higher ratio means the company settles its bills more quickly. Outside analysts often substitute cost of goods sold for credit purchases because purchase figures are rarely disclosed, so results from different sources may not match.

Days Payable Outstanding (DPO)

DPO converts the same idea into days: the average time a company takes to pay its suppliers.

DPO = (Average Accounts Payable ÷ Cost of Goods Sold) × 365

Hypothetical example: average AP of $15 million and cost of goods sold of $100 million.

DPO = ($15M ÷ $100M) × 365 = 54.75 days

A longer DPO keeps cash in the business longer, which can support working capital. It can also reflect difficulty paying. Some calculations use ending AP instead of the average, or 360 days instead of 365, which shifts the result slightly.

Cash Conversion Cycle (CCC)

The cash conversion cycle estimates how many days pass between paying for inventory and collecting cash from customers.

CCC = Days Inventory Outstanding (DIO) + Days Sales Outstanding (DSO) − DPO

DIO measures how long inventory sits before it is sold; DSO measures how long customers take to pay. DPO is subtracted because supplier credit funds part of that period. Hypothetically, a company with DIO of 40 days, DSO of 35 days and DPO of 55 days has a CCC of 20 days. A shorter cycle means less cash tied up in operations.

Managing Accounts Payable

The AP function receives and checks invoices, gets approvals, schedules payments and keeps vendor records. Good management balances holding cash as long as the terms allow with paying on time to avoid late fees and protect supplier relationships. Core practices include:

• Three-way matching: comparing the purchase order, the receiving report and the supplier invoice before paying, which catches billing errors, duplicate invoices and charges for goods that never arrived.
• Timely invoice processing: accounting software can route approvals and schedule payments so due dates and discount windows are not missed.
• Negotiating terms: longer payment periods or early-payment discounts improve cash flow.
• Regular reconciliation: comparing the AP subledger with the general ledger and supplier statements to find discrepancies.
• Monitoring metrics: tracking AP turnover and DPO over time shows whether payment habits are changing.
• Vendor relationships: a reliable payment record can make suppliers more flexible when needed.

Accounts Payable vs. Accounts Receivable

Accounts payable

• Money the company owes suppliers and vendors
• Current liability
• Created when the company buys on credit

Accounts receivable

• Money customers owe the company
• Current asset
• Created when the company sells on credit and has earned revenue it has not yet collected

When a supplier invoices a buyer for $5,000 on net 30 terms, the buyer records $5,000 of AP and the supplier records $5,000 of accounts receivable. Payment clears both.

Limitations of Accounts Payable as a Measure

AP is a snapshot at the balance sheet date. Paying a large batch of invoices just before quarter-end lowers reported AP below its typical level, and holding payments raises it. Seasonal businesses can show very different balances depending on when the period closes.

Ratios built on AP depend on inputs that vary by source, such as COGS versus credit purchases or average versus ending balances. Industry norms also differ widely because supplier terms differ, so a DPO that looks long in one sector may be ordinary in another. Telling current invoices from overdue ones requires an aging report, which companies generally keep internally rather than publish.

FAQs

The Bottom Line

Bookkeepers, business owners and analysts rely on accounts payable to track unpaid bills and judge short-term liquidity. Record each credit purchase as a credit to AP and each payment as a debit, and take early-payment discounts when spare cash allows, since skipping 2/10 net 30 costs roughly 37% a year. When reading AP or DPO, compare against purchases, industry norms and timing, because quarter-end payments and seasonality can distort the balance.