How to Write Off Uncollectible Accounts for a Tax Deduction

To write off uncollectible accounts for a tax deduction, you need to show the amount was a genuine debt owed to you, prove it has become worthless, and report it on the correct form for your situation. Businesses using the accrual method deduct unpaid invoices as business bad debts on Schedule C or Form 1120. Individuals who lent cash that will never be repaid can claim a nonbusiness bad debt as a short-term capital loss on Form 8949. Cash-basis taxpayers generally cannot deduct unpaid invoices at all, because they never reported the income in the first place.¹

What Qualifies as a Deductible Bad Debt

The IRS requires a real debtor-creditor relationship based on a valid, enforceable obligation to pay a fixed or determinable sum of money.² Gifts, contributions to a business, and informal understandings with no expectation of repayment do not qualify.

On top of that, you can only deduct amounts you previously included in income or money you actually lent out as cash. Accrual-basis businesses meet this test because they record revenue when it is earned. If you use the cash method and a customer never pays your invoice, you have no deduction available—there is nothing to write off, because you never counted the invoice as income.¹

Business vs. Nonbusiness Bad Debts

The classification controls almost everything else: which form you use, whether partial write-offs are allowed, and how much of the loss reduces your other income.

Business Bad Debts

A business bad debt is one created or acquired in the course of your trade or business, or that became worthless while you were operating that business. Unpaid customer invoices are the classic case. You can deduct the full amount when the debt becomes entirely uncollectible, and you can also deduct a partial amount when only part of it is worthless.³

For a partial write-off, you must charge the uncollectible portion off your books during the tax year you claim the deduction. Skip that step and the IRS can disallow the deduction.⁴ Business bad debts reduce ordinary income dollar for dollar.

Nonbusiness Bad Debts

Every bad debt that does not arise from your trade or business falls in this bucket. Personal loans to friends, family, or a soured private investment are typical examples. Two restrictions apply. First, the debt must be totally worthless before you can deduct anything—no partial write-offs.¹ Second, the loss is treated as a short-term capital loss no matter how long the debt was outstanding.³

That capital-loss treatment matters. If your total capital losses exceed your capital gains, only $3,000 of the excess can offset ordinary income in a single year ($1,500 if married filing separately). Anything above that carries forward to future years.⁵

Proving the Debt Is Worthless

The IRS wants objective evidence that there is no reasonable prospect of collecting. Relevant factors include the debtor’s financial condition, the value of any collateral, and whether legal action would realistically produce a recovery.⁶ Some of the strongest evidence:

A bankruptcy filing by the debtor, which generally indicates at least part of an unsecured debt is worthless.
Closure of the debtor’s business with no remaining assets.
Death of the debtor combined with proof the estate has no assets to pay creditors.
Documented collection efforts that produced nothing—demand letters, phone logs, collection agency reports, skip-tracing results.

Build the file as things happen. Keep the original loan agreement or contract, invoices, a ledger showing the outstanding balance and any payments received, and a dated log of every collection attempt. Reconstructing this from memory at tax time rarely goes well under audit.

Where to Report It

The IRS uses the specific charge-off method: you deduct the exact uncollectible amount in the year the debt became partially or totally worthless.¹ The form depends on who is claiming the deduction.

Sole Proprietors

Report business bad debts on Schedule C (Form 1040) as an “Other Expense.” List the item on Line 48 in Part V with a short description and the amount; the Part V total flows to Line 27b on the front of the schedule.⁷ Only include amounts from sales or services that were previously reported as income.

Corporations

Corporations claim the deduction on Line 15 of Form 1120, matching the amount charged off on the company’s books during the tax year. A corporation using the cash method cannot deduct a bad debt unless the amount was previously included in income.⁸

Individuals With a Nonbusiness Bad Debt

Report a totally worthless nonbusiness bad debt as a short-term capital loss on Form 8949, Part I, Line 1, with a separate line for each debt:¹

Column (a), Description: the debtor’s name, followed by “bad debt statement attached.”
Column (d), Proceeds: zero.
Column (e), Cost or basis: the amount you are owed.

Totals from Form 8949 flow to Schedule D, where they combine with your other capital gains and losses for the year.⁹ The $3,000 annual cap still applies.

Attach a separate statement to the return explaining the debt. Include:

A description of the debt, the amount, and when it became due.
The debtor’s name and any business or family relationship between you.
The collection efforts you made.
Why you concluded the debt was worthless.

Loans to Family and Friends

The IRS scrutinizes personal loans closely because they can easily be disguised gifts. To claim a bad debt deduction, you have to show you intended a loan—not a gift—when the money changed hands. If the arrangement carried an understanding that repayment was optional, the IRS treats it as a gift and no deduction is available.¹

Handle the loan like a business transaction from day one. Use a written promissory note stating the amount, interest rate, repayment schedule, and due date. Charge a reasonable rate; no-interest or unusually low-rate arrangements can push the IRS toward treating the whole thing as a gift. Keep records of any payments the borrower did make before the debt went bad.

The same treatment applies when a shareholder lends money to their own corporation. Those loans are typically nonbusiness bad debts, meaning total worthlessness is required and the capital-loss limits apply.¹

When You Realize a Debt Went Bad in a Prior Year

Sometimes you only discover a debt is worthless after you have already filed the return for the year it went bad. File Form 1040-X to amend the return for the year the debt actually became worthless. Bad debts get a longer amendment window than most other items: seven years from the due date of the original return for the year the debt became worthless, versus the standard three years for other refund claims.¹⁰ File a separate 1040-X for each year you are amending, and attach the documentation supporting the write-off.¹¹

If the Debtor Later Pays

A recovery on a written-off debt is not automatically taxable. Under the tax benefit rule in Section 111, you include the recovered amount in income only to the extent that the original deduction actually reduced your tax in the earlier year.¹² If you had a net operating loss that year and the deduction saved you nothing, part or all of the recovery may not be taxable. If the deduction did reduce your taxes, report the recovery as income in the year you receive it. Sole proprietors who claimed the original deduction on Schedule C report the recovery as business income on the same schedule.⁷

1
Internal Revenue Service. Topic No. 453, Bad Debt Deduction
2
eCFR. 26 CFR 1.166-1 – Bad Debts
3
Office of the Law Revision Counsel. 26 USC 166 – Bad Debts
4
Internal Revenue Service. Rev. Rul. 2001-59
5
Internal Revenue Service. Topic No. 409, Capital Gains and Losses
6
eCFR. 26 CFR 1.166-2 – Evidence of Worthlessness
7
Internal Revenue Service. 2024 Instructions for Schedule C (Form 1040)
8
Internal Revenue Service. 2025 Instructions for Form 1120
9
Internal Revenue Service. 2025 Instructions for Form 8949
10
Internal Revenue Service. Time You Can Claim a Credit or Refund
11
Internal Revenue Service. Instructions for Form 1040-X
12
Office of the Law Revision Counsel. 26 USC 111 – Recovery of Tax Benefit Items