Accounts payable (AP) is money a business owes to its suppliers and vendors for goods or services received but not yet paid for. AP appears as a current liability on the balance sheet. Strategic AP management — maximizing Days Payable Outstanding within payment terms — is a zero-cost working-capital tool.
Accounts payable is the counterpart to accounts receivable: the credit your suppliers extend to you. When a supplier ships inventory on net-30 terms, the unpaid invoice is AP until paid. AP grows when new purchases are made on credit and shrinks as invoices are paid. From a working-capital standpoint, AP is favorable — it represents financing from suppliers at zero explicit cost (assuming within payment terms). The objective is to maximize DPO (Days Payable Outstanding) while staying within negotiated terms and preserving vendor relationships. Every dollar of AP is a dollar you haven't had to fund from cash or external debt. AP in loan underwriting: lenders review AP aging schedules as part of commercial loan due diligence. A business with high past-due AP (payables overdue beyond terms) signals cash-flow stress. A business with clean current AP signals disciplined financial management. SBA lenders running a global cash flow analysis will add outstanding AP obligations to the debt-service picture. The Federal Reserve's Z.1 Financial Accounts (https://www.federalreserve.gov/releases/z1/) tracks trade payables at the aggregate sector level — providing benchmarks for AP as a percentage of revenue across industries. UCC Article 9 (https://www.law.cornell.edu/ucc/9) governs the security interests that arise when AP obligations are assigned or pledged to lenders in factoring and asset-based lending structures.
AP is an obligation from a trade transaction — you received goods or services and owe payment within the agreed terms. There's typically no explicit interest rate (though many suppliers offer early-pay discounts, and late payment may trigger fees). A loan involves borrowed cash with contracted interest. AP is the cheapest working-capital source available to most businesses — it's worth exhausting AP capacity before tapping external debt.
High AP is normal for a business that relies on supplier credit — lenders expect it. What matters is whether AP is current (within terms) or past due. Current AP with strong gross margin is a healthy balance sheet signal. Past-due AP signals cash pressure. Lenders reviewing AP aging will look for invoices more than 30 days beyond payment terms.