Accounts Receivable: What It Is, How It Works and Key Metrics

Quick answer: Accounts receivable (AR) is the money customers owe your business for goods or services you have delivered but not yet been paid for. Every unpaid invoice is part of your accounts receivable. AR is recorded as a current asset, and managing it well means invoicing promptly, tracking due dates and collecting on time.

This guide explains how accounts receivable works, shows the bookkeeping entries, lays out a repeatable AR process and walks through the two metrics that tell you whether it is healthy. Good AR starts with a clear invoice: our free invoice generator puts the invoice number, due date and payment details where your customers' finance team expects them.

What is accounts receivable?

When you sell on credit (deliver now, get paid later), you create a receivable. A freelancer who finishes a project and sends an invoice on Net 30 terms has a receivable for the next 30 days. A wholesaler with 50 customers on account may have hundreds of open receivables at any time.

Receivables are valuable: they represent revenue you have earned. But they are not cash. A business can be profitable on paper and still struggle to pay its bills if too much money is tied up in unpaid invoices. That gap is what AR management is designed to close.

On the balance sheet, accounts receivable usually appears among current assets, next to cash. Lenders often look at it closely, because the size and age of your receivables show how reliably your sales turn into money. A large AR balance made up mostly of recent, not-yet-due invoices is a good sign; the same balance made up of invoices several months overdue is a risk.

Accounts receivable vs accounts payable

Feature	Accounts receivable	Accounts payable
Definition	Money owed to you by customers	Money you owe to suppliers
Created by	Invoices you send	Bills you receive
Balance sheet	Current asset	Current liability
Goal	Collect as quickly as terms allow	Pay on time, not necessarily early
Key report	AR aging report	AP aging report

The same transaction sits on both sides: your invoice is your customer's bill. See invoice vs bill for how the terminology works.

How accounts receivable is recorded

Under accrual accounting, a receivable is recorded when you invoice. Here is a $2,400 invoice for consulting work, paid in full 25 days later:

Date	Event	Debit	Credit
1 Oct 2026	Invoice INV-2026-0118 issued	Accounts receivable $2,400	Revenue $2,400
26 Oct 2026	Customer pays by bank transfer	Bank $2,400	Accounts receivable $2,400

After the payment, the receivable for that invoice is back to zero. If you later reduce an invoice because of a pricing error or returned goods, you issue a credit note, which reduces both revenue and AR. If you use the cash method instead, revenue is recorded only on 26 October. Our comparison of cash vs accrual accounting shows the difference with a worked example.

The accounts receivable process, step by step

1. Set credit terms before work starts. Agree due dates, deposits and late fees in your quote or contract. Our guide to invoice payment terms explains Net 15, Net 30 and the alternatives.
2. Invoice immediately. Send the invoice the day work is delivered or approved. Every day of delay adds a day to collection.
3. Make invoices easy to approve. Use a unique number from our invoice number generator, the client's PO number, itemized lines and a real due date.
4. Make invoices easy to pay. Include bank details or a payment link on the invoice itself.
5. Record every invoice. Log it in your accounting software or a sales ledger the day it is sent.
6. Send reminders on a schedule. A friendly note before the due date and firmer follow-ups after it. Our payment reminder email templates are ready to copy.
7. Apply payments promptly. Match each payment to the right invoice so your AR balance stays accurate.
8. Review aging weekly. Run an accounts receivable aging report to see what is overdue and by how long.
9. Escalate when needed. Follow a clear process for an overdue invoice, and consider collections only as a last resort.

Key accounts receivable metrics

Days sales outstanding (DSO)

DSO estimates the average number of days it takes to collect payment after a sale. The common formula is:

DSO = (accounts receivable ÷ credit sales for the period) × number of days in the period

Worked example: At the end of a 90-day quarter, a business has $45,000 in accounts receivable. Credit sales during the quarter were $135,000.

• $45,000 ÷ $135,000 = 0.3333
• 0.3333 × 90 days = 30 days

A DSO of 30 days on Net 30 terms means customers are, on average, paying roughly on time. If DSO rose to 45 days next quarter while terms stayed at Net 30, collections would be slipping.

Accounts receivable turnover

AR turnover measures how many times a year you collect your average receivables balance:

AR turnover = annual credit sales ÷ average accounts receivable

Worked example: Annual credit sales are $540,000. AR was $40,000 at the start of the year and $50,000 at the end, so average AR is ($40,000 + $50,000) ÷ 2 = $45,000.

• AR turnover = $540,000 ÷ $45,000 = 12 times a year
• Average collection period = 365 ÷ 12 ≈ 30.4 days

Higher turnover means faster collection. Track the trend over time rather than fixating on one figure, because seasonal sales can distort a single period.

How to improve accounts receivable

• Shorten terms where you can. Net 14 instead of Net 30 for small clients often works fine.
• Take deposits on large or custom work, so less of the job sits in AR.
• Use early payment incentives selectively; compare the cost with what late payment costs you.
• Send statements to clients with several open invoices so they can pay them together.
• Apply agreed late fees consistently, where your contract and local law permit.
• Know your funding options. If AR is growing faster than cash, invoice factoring or financing can bridge the gap at a cost.

Strong AR habits are the backbone of cash flow management, because collections are usually a small business's largest source of incoming cash.

Bad debts and write-offs

Sometimes an invoice is never paid. After reasonable efforts (reminders, calls, a final notice and perhaps a collections agency), you may decide the amount is uncollectible and write it off as a bad debt. Accrual-basis businesses often keep an allowance for doubtful accounts, estimated from the aging report, so expected losses show up before they happen. Tax treatment of bad debts depends on your accounting method and jurisdiction, so check with an accountant before claiming a deduction.

Accounts receivable mistakes to avoid

• Treating receivables as cash. Revenue on paper does not pay wages. Plan spending around expected collection dates, not invoice dates.
• Vague due dates. "Due on receipt" or "Net 30" alone invites delays. State the calendar date the payment is due.
• No owner for collections. In small teams, chasing invoices falls between the cracks. Assign one person and a weekly time slot.
• Letting one customer dominate. If a single client accounts for a large share of your AR, a late payment from them can create a cash crisis. Consider deposits or shorter terms for big accounts.
• Unapplied payments and credits. Payments that aren't matched to invoices make customers look overdue when they aren't, which leads to awkward reminders.
• Extending more credit to slow payers. Before starting new work for a client with overdue invoices, agree how the old balance will be cleared.
• Waiting too long to escalate. The older an invoice gets, the harder it usually is to collect. A clear timeline (reminder, call, final notice) keeps you consistent and fair.

Most of these problems are prevented by a disciplined routine: invoice immediately, record everything, review weekly and follow up on schedule. None of it requires expensive tools, just consistency.

To measure how quickly customers actually pay, track days sales outstanding (DSO). If the terms still feel muddled, our explainer on accounts payable vs accounts receivable sets out the difference.

Send invoices that are easy to collect

Healthy accounts receivable starts with invoices that are clear, accurate and easy to pay. Create yours in the invoice generator and pick a clean layout such as the Slate invoice template so the due date and amount stand out.