# Allowance for Doubtful Accounts (ADA) > ADA is a contra-asset account estimating the receivables you will not collect, reducing them to net realisable value. Source: https://www.paidnice.com/dictionary/allowance-for-doubtful-accounts Publisher: Paidnice Part of: Accounts Receivable Dictionary, https://www.paidnice.com/dictionary --- ## What is an allowance for doubtful accounts (ADA)? **ADA stands for Allowance for Doubtful Accounts. It is a contra-asset account that estimates the portion of a company's accounts receivable it does not expect to collect.** Sitting against receivables on the balance sheet, it reduces them to the amount the business realistically expects to receive, known as the net realisable value. In accounting, the allowance exists because some customers will not pay. Rather than wait for a specific invoice to go bad, accrual accounting (under both GAAP and IFRS) requires you to estimate the loss in advance and match it to the same period as the sale. That estimate is the ADA, and the matching expense is bad debt expense. ### Key takeaways - **It is a contra-asset.** ADA is subtracted from gross receivables to show net realisable value on the balance sheet. - **It pairs with bad debt expense.** Creating or topping up the allowance records a matching bad debt expense in the income statement. - **Two common methods.** A flat percentage of receivables, or an aging schedule that weights older invoices more heavily. ## How to calculate the allowance for doubtful accounts The simplest method multiplies total receivables by an estimated uncollectible rate drawn from your history. The more accurate method ages your receivables and applies a higher rate to older buckets. ``` Allowance = accounts receivable x estimated uncollectible rate Net realisable value = accounts receivable - allowance ``` On 100,000 of receivables at a 5% uncollectible rate, the allowance is 5,000 and the net realisable value is 95,000. The entry to create it debits bad debt expense 5,000 and credits the allowance for doubtful accounts 5,000. An interactive calculator for this is on the page, showing the allowance, the net realisable value and the journal entry for any figures you enter. That example assumes the allowance is being created from a zero balance. If an allowance already exists, you only record the difference needed to reach the new target (the adjusting entry), not the full amount. For the matching write-off mechanics, see [bad debt expense](https://www.paidnice.com/dictionary/bad-debt-expense), or run the numbers in the [bad debt expense calculator](https://www.paidnice.com/calculators/bad-debt-expense-calculator). ## ADA vs bad debt expense The allowance for doubtful accounts is the balance-sheet estimate of uncollectible receivables; bad debt expense is the income-statement cost of creating or increasing that allowance. They are two sides of the same entry: you debit bad debt expense and credit the allowance. | Aspect | Allowance for doubtful accounts | Bad debt expense | | --- | --- | --- | | Where it sits | Balance sheet (contra-asset). | Income statement (expense). | | What it represents | The estimate of receivables you will not collect. | The cost of creating or topping up that estimate. | | Over time | A running balance that carries forward. | Resets to zero each period. | | On a confirmed write-off | Reduced when the bad invoice is removed. | Not charged again; the loss was already expensed. | A specific invoice that is confirmed uncollectible is then written off against the allowance, not expensed again. Related terms: [doubtful account](https://www.paidnice.com/dictionary/doubtful-account), [uncollectible accounts](https://www.paidnice.com/dictionary/uncollectible-accounts) and [charge-off](https://www.paidnice.com/dictionary/charge-off). ## How to manage doubtful accounts in practice A good allowance starts with good data: an accurate aging of receivables and a reliable write-off history. Automating your [accounts receivable reporting](https://www.paidnice.com/accounts-receivable-reporting) in [Xero](https://www.paidnice.com/integrations/xero) or [QuickBooks](https://www.paidnice.com/integrations/quickbooks) keeps your aging current, which makes the estimate more defensible and helps you collect before an account ever becomes doubtful. The [AR aging analysis tool](https://www.paidnice.com/calculators/accounts-receivable-aging-analysis) is a quick way to see where the risk sits. ## Frequently asked questions **What does ADA stand for in accounting?** ADA stands for Allowance for Doubtful Accounts. It is a contra-asset account that estimates the portion of accounts receivable a business does not expect to collect, reducing receivables to their net realisable value on the balance sheet. **Is the allowance for doubtful accounts a debit or a credit?** The allowance for doubtful accounts normally carries a credit balance, because it is a contra-asset that offsets the debit balance of accounts receivable. You increase it with a credit (and debit bad debt expense), and you reduce it with a debit when a specific account is written off. **How do you calculate the allowance for doubtful accounts?** Multiply total accounts receivable by an estimated uncollectible rate drawn from your write-off history. For more accuracy, age the receivables and apply a higher rate to older buckets, then add the results. The total is your required allowance. **What is the difference between ADA and bad debt expense?** The allowance for doubtful accounts is the balance-sheet estimate of uncollectible receivables; bad debt expense is the income-statement cost of creating or increasing that allowance. They are recorded together: you debit bad debt expense and credit the allowance. **Is an allowance method required under GAAP or IFRS?** Yes. Both GAAP and IFRS require an allowance method so that the expected loss on receivables is matched to the same period as the related sales, rather than waiting until a specific invoice is confirmed uncollectible. ## Related - [Bad debt expense calculator](https://www.paidnice.com/calculators/bad-debt-expense-calculator): size the expense behind the allowance. - [Bad debt expense](https://www.paidnice.com/dictionary/bad-debt-expense): the income-statement side of the entry. - [AR insights and reporting](https://www.paidnice.com/accounts-receivable-reporting): keep your aging accurate in Xero and QuickBooks. Set the rate from your own write-off history, or weight it higher for older invoices using an aging schedule. General information, not accounting advice.