Accounts receivable is credited any time a customer’s outstanding balance on your books goes down. Because A/R is an asset account with a normal debit balance, a credit entry reduces it. The trigger is usually cash collection, but early payment discounts, returns and allowances, write-offs, recovered bad debts, and overpayments all produce credits to A/R as well. Each one has a specific offsetting entry, and getting them right is what keeps your receivables balance honest.
Customer Payments
Cash collection is the everyday reason A/R gets credited. When a customer pays an invoice, you debit Cash and credit Accounts Receivable for the same amount. For a $7,500 invoice paid in full, debit Cash $7,500 and credit A/R $7,500. The customer’s balance drops to zero and the money moves from a promise into your bank account.
Partial payments follow the same logic but leave a balance open. If a customer sends $3,000 against that $7,500 invoice, debit Cash $3,000 and credit A/R $3,000. The remaining $4,500 stays in receivables until the next installment arrives. Note the invoice number on each entry so partial payments can be matched to specific bills during reconciliation.
The payment method doesn’t change the core entry. Check, ACH, and credit card payments all reduce receivables by the amount collected.
Early Payment Discounts
Credit terms like “2/10 Net 30” give the customer a 2% discount for paying within 10 days, with the full amount due in 30. When a customer takes the discount, A/R still gets credited for the full invoice, but the cash you receive is less. The gap is booked as a sales discount.
For a $5,000 invoice paid inside the discount window, the customer sends $4,900. You record three lines: debit Cash $4,900, debit Sales Discounts $100, and credit A/R $5,000. Sales Discounts is a contra-revenue account that offsets gross revenue on the income statement. Tracking discounts separately lets you see what early payment incentives actually cost rather than burying the number inside reduced revenue.
Sales Returns, Allowances, and Credit Memos
When a customer returns merchandise or you agree to reduce the price for a quality problem, A/R gets credited for the adjustment. No cash changes hands. A return partially or fully reverses the original sale; an allowance keeps the sale intact but reduces what the customer owes.
The document that formalizes the adjustment is usually a credit memo, issued for returned goods, billing errors, or negotiated price reductions. The entry is the same in each case: debit Sales Returns and Allowances, credit A/R. For a $2,500 return, debit Sales Returns and Allowances $2,500 and credit A/R $2,500.
Sales Returns and Allowances is a contra-revenue account, not Revenue itself. Keeping it separate shows whether returns are running at a level worth investigating. If returns are 8% of sales, that’s a signal worth catching.
When returned goods come back in sellable condition, a second entry restores the inventory: debit Inventory and credit Cost of Goods Sold. Skipping this step leaves inventory understated and cost of goods sold overstated.
Writing Off Uncollectible Accounts
Sometimes a customer isn’t going to pay. When a receivable is deemed worthless, you credit A/R to remove it. The offsetting debit depends on which bad debt method you use.
Allowance Method
Most GAAP-following companies estimate uncollectible accounts in advance. At period end, you estimate how much of your outstanding A/R will not be collected and record it as a debit to Bad Debt Expense and a credit to Allowance for Doubtful Accounts, a contra-asset that sits next to A/R and reduces its net realizable value.
When a specific account is later identified as uncollectible, the write-off is: debit Allowance for Doubtful Accounts, credit A/R. This entry doesn’t touch the income statement because the expense was recognized when the allowance was booked. Both A/R and the allowance drop by the same amount, and net receivables stay unchanged.
Public companies and larger entities estimate the allowance using the current expected credit losses (CECL) model under FASB ASC 326, which requires estimating lifetime expected losses from the moment a receivable is recognized.
Direct Write-Off Method
Smaller businesses that aren’t bound by GAAP sometimes skip the allowance and use the direct write-off method. When a customer’s debt is deemed uncollectible, debit Bad Debt Expense and credit A/R in a single entry. The expense hits the income statement at the moment of write-off.
It’s simpler, but it mismatches the timing of revenue and the cost of not collecting it. A January credit sale written off in August makes January look better and August look worse than either month really was. That mismatch is why GAAP discourages the method for external reporting.
Recovering a Previously Written-Off Account
Sometimes a customer pays a debt you’ve already written off. The recovery takes two entries rather than a straight cash-to-expense line, because the receivable has to be put back on the books before it can be settled.
Under the allowance method, first reverse the write-off: debit A/R, credit Allowance for Doubtful Accounts. Then record the payment: debit Cash, credit A/R. After both, the customer’s balance is back to zero and the allowance reflects the recovery.
Under the direct write-off method, the reversal goes to the income statement instead. Step one: debit A/R, credit Bad Debt Expense. Step two: debit Cash, credit A/R. The credit to Bad Debt Expense gives back the deduction you took at write-off. Running the payment through A/R both times creates the audit trail that shows the account was reinstated and then settled.
Customer Overpayments
If a customer pays more than they owe, the credit to A/R exceeds the balance and produces a credit (negative) balance in an account that normally carries a debit balance. A customer who owes $2,000 but sends $2,300 leaves a $300 credit balance in their sub-ledger.
That $300 is money you owe back, which makes it a liability, not a reduction of assets. Under GAAP, material credit balances should be reclassified out of A/R into a current liability account such as Customer Deposits or Customer Credit Balances. Leaving them netted against receivables understates both assets and liabilities.
You resolve the overpayment by refunding or by applying it to a future invoice. A refund is a debit to the liability account and a credit to Cash. Applying it forward is a debit to the liability account when the next invoice goes out, reducing the new receivable. Unexplained credit balances sitting on an aging report are a red flag for auditors.
Tax Treatment of Bad Debt Write-Offs
Writing off a receivable on your books and deducting it on your tax return are separate questions. The IRS allows a deduction for business bad debts under 26 U.S.C. ยง 166, but only if the amount was previously included in gross income.1Internal Revenue Service. Topic No. 453, Bad Debt Deduction
In practice, that limits the deduction to accrual-method businesses. Accrual taxpayers recognize revenue when the invoice is sent, so the receivable is already in income; a write-off recovers a real loss. Cash-method businesses recognize revenue only when payment arrives, so an unpaid invoice was never income and there is nothing to deduct.1Internal Revenue Service. Topic No. 453, Bad Debt Deduction
The statute allows deductions for wholly worthless debts and for partially worthless debts, with the partial deduction limited to the amount actually charged off on the books during the tax year. The debt must also be a business bad debt, created or acquired in connection with the trade or business. Nonbusiness bad debts are treated as short-term capital losses for individuals rather than ordinary deductions.2Office of the Law Revision Counsel. 26 USC 166 – Bad Debts
Keeping A/R Credits Clean
Every credit to accounts receivable should tie to a specific customer, a specific invoice, and a documented reason. The customer sub-ledger has to match the general ledger control account at period end. When it doesn’t, the culprit is usually a payment posted to the wrong customer, a credit memo entered without being linked to an invoice, or a write-off recorded in one ledger but not the other.
Monthly reconciliation between the aging report and the general ledger catches these before they compound. An inflated A/R balance produces collection calls to customers who already paid, overstated current assets on loan applications, and decisions built on revenue you’re never going to collect. The credit side of A/R is where promises turn into cash, adjustments, or acknowledged losses, and each entry needs to be recorded precisely when it happens.