What is Accounts payable vs receivable? Definition, Formula & Benchmarks

What is accounts payable vs receivable?

Accounts payable (AP) is money your startup owes suppliers and vendors, recorded as a liability. Accounts receivable (AR) is money customers owe you, recorded as an asset. AP is cash going out; AR is cash coming in. Under accrual accounting, both are booked when earned or incurred, not when cash moves.

Worked example

You invoice a customer $30K on net-30 terms, creating $30K of AR. You receive a $5K vendor bill due in 30 days, creating $5K of AP.

Side by side

	Accounts payable (AP)	Accounts receivable (AR)
Direction	Money you owe	Money owed to you
Balance sheet	Liability	Asset
Owed to / by	Suppliers and vendors	Customers
Effect on cash	Cash out (future)	Cash in (future)
Managed via	Bill-pay / AP process	Invoicing and collections

Why it matters for fast-growing companies

AP and AR timing drives working capital and near-term cash flow, which directly affects runway. Slow AR collection starves a startup of cash it has already earned, while well-managed AP preserves cash without burning vendor goodwill. Accrual books require both to be tracked accurately for a clean close.

Frequently asked questions

What is the difference between AP and AR?+

AP is what you owe others; AR is what others owe you. Accounts payable is a liability for unpaid vendor bills, representing cash outflows to come. Accounts receivable is an asset for unpaid customer invoices, representing cash inflows to come. One is money out, the other is money in.

Why do AP and AR only exist under accrual accounting?+

Because accrual records transactions when earned or incurred, not when cash moves, creating a gap that AP and AR fill. Cash-basis books recognize nothing until money changes hands, so there are no receivables or payables to track. This is one reason funded startups run on accrual.

How do AP and AR affect runway?+

They shape working capital and the timing of cash. Uncollected AR is earned cash you cannot yet spend, so slow collections shorten effective runway. Managing AP terms, paying on time but not early, keeps more cash on hand. Both feed directly into an accurate zero-cash-date.

Accounts payable vs receivable