Accounts receivable is money your clients owe you for work you've already delivered. You invoiced them. You did the job. Now you're waiting to get paid.
It sits on the balance sheet as a current asset because it's expected to convert to cash within 12 months. Until that cash lands, AR is both a financial asset and a task list. Every open invoice needs tracking, follow-up, and eventual application to zero the balance.
For bookkeepers, AR is one of the most common sources of balance-sheet errors. Invoices get paid but not applied. Credits get issued but not matched. Old invoices from prior years sit on the aging report because no one ever wrote them off. Getting AR right means running a clean process from invoice to collection.
What is accounts receivable?
Accounts receivable (AR) is the total amount customers owe a business for goods or services delivered but not yet paid for. It appears on the balance sheet as a current asset, meaning it's expected to convert to cash within 12 months. When you send a customer an invoice for $5,000 and they haven't paid yet, that $5,000 sits in AR. Once they pay, you apply the payment and the balance clears. DSO (Days Sales Outstanding) measures how long, on average, it takes to collect.
- AR is a current asset - it shows on the balance sheet because the customer owes you money, not because you've received it
- The full lifecycle has 5 steps - invoice creation, AR entry, aging, payment collection, cash receipt application
- AR vs. deferred revenue - AR = delivery before cash; deferred revenue = cash before delivery; they're mirror opposites
- DSO tells you collection speed - divide AR balance by average daily revenue; 30 days is healthy, 60+ days signals a problem
- Unapplied payments inflate AR - a customer pays but the receipt sits unmatched; the invoice still shows open on the aging report
- Bad debt must be written off - stale invoices you'll never collect need to be expensed, or your assets are overstated
AR starts the moment you deliver goods or services on credit terms. You've fulfilled your side of the agreement. The customer hasn't yet.
In the accounting system, that creates a receivable: debit Accounts Receivable, credit Revenue. The transaction records the earning event. Cash hasn't moved. The asset (the right to collect) is on your books.
For a bookkeeping glossary reference, AR is one of the most frequently touched current-asset accounts on the balance sheet. It sits alongside cash, inventory, and prepaid expenses on the asset side, with payables, accrued liabilities, and equity on the other side of the equation.
This page is the definition. The full cycle it sits inside, terms, invoicing, follow-up, payment matching, reconciliation, and write-off, is mapped in the accounts receivable management guide.
Every dollar in AR moves through the same path:
1. Invoice created. The sales team or owner generates an invoice. In QuickBooks, Xero, or most accounting platforms, saving the invoice automatically creates the AR entry: debit AR, credit Revenue.
2. AR entry recorded. The open invoice now appears on the AR aging report. The balance is outstanding.
3. Payment collected. The customer pays by check, ACH, credit card, or wire. The cash lands in your bank account.
4. Payment applied. You match the incoming payment to the open invoice in the accounting system. This is the step that most often gets skipped. The cash receipt debits cash and credits AR, clearing the balance.
5. AR cleared. The invoice moves from open to paid. Your AR aging report no longer shows it. The cash is on the books.
The problem is step 4. Payments hit the bank feed as a lump deposit. If no one applies them to specific invoices, the invoices stay open. AR stays inflated. The aging report becomes unreliable.
These two accounts confuse people because they both involve incomplete transactions. The difference is timing:
- Accounts receivable: You delivered first, cash comes later. You earned the revenue. The customer owes you.
- Deferred revenue: Cash came first, delivery comes later. The customer paid. You owe them the service.
If a client pays a $3,000 retainer upfront for work you haven't done yet, that's deferred revenue (a liability). Once you complete the work, you recognize the revenue and clear the liability. Learn more in customer deposit prepaid revenue.
The practical test: did you deliver before or after receiving cash? Delivered first: AR. Cash first: deferred revenue.
The aging report is the working tool built on top of AR. It sorts every open invoice by how far past its due date it has gone, so you can see which dollars are at risk. It is also the bookkeeper's reconciliation check: at month-end the aging total should match the AR balance on the trial balance, and a gap means an unposted transaction, an unapplied credit, or a cash receipt that cleared the wrong invoice. The mechanics, the buckets, and a worked example live in the accounts receivable aging report guide. For the speed measures on top of it, turnover and days sales outstanding, see the accounts receivable turnover ratio guide. Terms themselves drive the timing, covered in net 30 payment terms.
Not every invoice gets collected. When a balance is genuinely uncollectible you write it off, either directly (debit Bad Debt Expense, credit Accounts Receivable) or through an Allowance for Doubtful Accounts under the allowance method. Carrying a dead invoice on the books overstates your assets. The methods, the journal entries, and the documentation a write-off needs are in the bad debt write-off guide, with the expense-side treatment in bad debt expense.
These four issues show up in nearly every set of books with active AR:
Paid invoices still showing open. The customer paid, but the cash receipt was posted as a general deposit, not matched to the invoice. The invoice stays open on the aging report. Fix: run the aging report, identify invoices where there's a corresponding bank deposit, then apply the payment.
Customer overpayment sitting as negative AR. A client overpaid by $50. The system creates a negative balance on their customer record. It looks like they owe you negative money. Fix: either issue a refund or apply the credit to their next invoice. Don't leave it hanging.
Bad debt never written off. Invoices from 2 years ago sitting on the aging report because no one dealt with them. They inflate your AR balance and make your current asset position look better than it is. Fix: review anything 90+ days old quarterly and make a write-off decision.
Categorizes the routine. Flags what needs you.
See Growthy on a sample book. Read-only bank access.
Get startedStale invoice from a prior year. A $200 invoice from two years ago is still open. The customer claims they paid. You don't have a record of the payment. This is usually a misapplication. Run the customer's payment history, find where the cash went, and either apply it or write off the invoice.
Growthy connects to your bank feed and accounting system. When a payment lands, it categorizes the transaction automatically based on patterns from prior months. On returning books, accuracy reaches 90%+.
The gap Growthy closes: unapplied payments and mismatched deposits. When your bank feed shows a $5,000 ACH receipt that maps to three separate client invoices, Growthy surfaces the match candidates so you can review and approve in one step instead of manually cross-referencing the aging report.
For a closer look at how the AR and payment workflow fits together, see the cash flow statement and what it shows about collection timing. Or visit Growthy's AI bookkeeping features to see how the categorization engine handles incoming receipts.
What's the difference between accounts receivable and revenue?
Revenue is recognized when you earn it, either at delivery (accrual) or when cash is received (cash basis). AR is the asset that sits on the balance sheet between earning revenue and collecting cash. Under accrual accounting, you can have revenue on the income statement and AR on the balance sheet at the same time for the same transaction.
Can AR ever be a liability?
No. AR is always an asset. If a customer overpays, the overpayment creates a credit balance on their customer record, which is technically a liability (you owe them a refund or future service). But the account itself is still classified as an asset; the individual customer balance just goes negative.
What does DSO tell you about a business?
Days Sales Outstanding measures how long it takes to collect after invoicing. A DSO of 30 on net-30 terms means you're collecting on time. A DSO of 90 on net-30 terms means you're waiting 3x longer than agreed. High DSO often signals poor collections follow-up, customers with cash flow problems, or invoicing errors (customer disputes the charge before paying).
Why would AR go up even when sales are flat?
Several reasons: customers are paying slower, you're extending longer payment terms to close deals, invoices are being sent late, or payment applications aren't being processed. Any of these keeps the AR balance elevated even when revenue hasn't changed.
What's the right way to handle a partial payment?
Apply the partial payment to the invoice and leave the remaining balance open. Don't close the invoice unless the customer has authorized a credit or adjustment for the remaining amount. The open balance will continue appearing on the aging report until it's fully paid, credited, or written off.
AR is one of the balance sheet accounts that bookkeepers touch every week. Clean AR means every invoice has a clear status, every payment is applied, and the aging report matches the trial balance. When those three things are true, the cash flow picture is accurate.
Sign up for Growthy to see how automatic payment matching cuts AR cleanup time at month-end.
