Bad Debts: Business vs. Nonbusiness, Deduction, and Worthlessness Rules

A bad debt tax deduction lets you write off money you’re owed but will never collect, though what you actually get depends on the kind of debt. If the debt came out of your trade or business, the loss is an ordinary deduction that offsets any income on your return. If it was a personal loan, the loss is treated as a short-term capital loss and your deduction against ordinary income is capped at $3,000 a year. In both cases you have to prove the debt was real, that it has genuinely become worthless, and that you claimed it in the correct tax year.

Business Debt or Personal Debt: The Question That Decides Everything

Before anything else, the IRS wants to know whether the debt is tied to your trade or business. That classification controls the size and shape of your deduction.¹

A business bad debt is one you created or acquired in the course of your trade or business. The clearest example is an unpaid accounts receivable from a customer. Loans to suppliers, clients, or employees can also qualify when your primary motive for making the loan was to protect a business relationship or your own business operations.

Everything else is a nonbusiness bad debt. Personal loans to friends and family, loans you made as an individual investor, and most loans from a shareholder to a closely held corporation fall on this side of the line.² Being a shareholder doesn’t make a loan to your corporation a business debt. Unless you’re in the trade or business of lending money, or the loan was necessary to protect your job or your own business, the IRS treats it as investment activity, and any resulting loss is a nonbusiness bad debt.

How Business Bad Debts Are Deducted

Business bad debts get the more favorable treatment. The loss is an ordinary deduction, so it offsets any type of income — wages, business profits, investment gains — without an annual dollar cap.² Sole proprietors report it as an expense on Schedule C.

You use the specific charge-off method: you identify a particular debt and deduct it when it becomes worthless. Business debts also allow a deduction for partial worthlessness. If you can show that a debt is recoverable only in part, you can deduct up to the amount you charged off on your books during the year. You aren’t required to write off partial bad debts every year, but you can’t deduct any portion of a debt after the year it becomes totally worthless.³

How Nonbusiness Bad Debts Are Deducted

Personal bad debts get much rougher treatment. When a personal loan becomes completely worthless, the loss is automatically treated as a short-term capital loss, no matter how long you held the debt.² Partial worthlessness doesn’t count. The debt has to be entirely uncollectible before you can deduct anything.

That capital loss first offsets any capital gains you had during the year. Anything left over can only be deducted against ordinary income at $3,000 per year, or $1,500 if you’re married filing separately.⁴ The unused portion carries forward under the same annual cap. A $30,000 personal loan gone bad could take a decade to fully deduct if you don’t have capital gains to absorb it.

You report a nonbusiness bad debt on Form 8949, Part I (short-term transactions). Enter the debtor’s name and “bad debt statement attached” in column (a), your basis in the debt in column (e), and zero in column (d). The totals flow to Schedule D.⁵

You must also attach a separate statement to your return that contains:

A description of the debt, including the amount and the date it became due
The debtor’s name and any business or family relationship between you and the debtor
The efforts you made to collect the debt
Why you decided the debt was worthless⁵

Skipping that statement is an easy way to lose a deduction you’re otherwise entitled to.

Proving the Debt Is Worthless

You can only deduct a bad debt in the tax year it becomes worthless, so the bar for “worthless” matters. The standard is factual: the debt has no remaining value and no realistic chance of collection. A late payment or a temporary rough patch for the borrower isn’t enough.

The IRS expects you to show that you took reasonable steps to collect, or that any attempt to collect would be pointless. You don’t have to file a lawsuit if you can show that any judgment would be uncollectible.¹ A bankruptcy filing is one of the strongest indicators. IRS regulations treat a bankruptcy as generally establishing at least partial worthlessness for unsecured debts.⁶ Other useful evidence includes the value of any collateral securing the debt and the debtor’s overall financial condition.

Proving It Was a Loan, Not a Gift

This is where most personal bad debt claims collapse. Before the IRS looks at worthlessness, it asks a more basic question: was this ever really a loan? If you handed money to a family member or friend with no written terms, no interest, and no real expectation of being paid back, the IRS will treat it as a gift, and gifts aren’t deductible.

A bona fide debt requires a genuine debtor-creditor relationship based on a valid, enforceable obligation to pay a fixed or determinable sum of money.⁷ In practice, the IRS looks for the ordinary signs of a real financial transaction:

A signed promissory note with the loan amount, interest rate, and repayment schedule
Interest at market rates; for loans above $10,000, at least the applicable federal rate helps show the arrangement was arm’s-length
Actual repayment on schedule, or documentation showing you tried to collect when payments stopped
A borrower who had the financial ability and intent to repay when the loan was made

You aren’t technically required to have a promissory note, but without one, convincing the IRS that money you handed to your brother-in-law was a loan rather than a holiday gift becomes a steep uphill fight. The documentation doesn’t need to be elaborate. It needs to exist.

The Cash-Basis Trap

Here’s a limitation that catches a lot of people. If you use the cash method of accounting, which most individuals do, you generally can’t deduct a bad debt for income you never actually received. To take a bad debt deduction, you must have either previously included the amount in your income or loaned out your own cash.¹

What that means in practice: if a client owes you $5,000 for consulting work and never pays, a cash-basis taxpayer can’t deduct that $5,000. It was never reported as income in the first place, so there’s no loss to deduct. The same rule blocks bad debt deductions for unpaid salaries, wages, rent, fees, interest, and dividends when you’re on the cash method.

The picture flips when you actually parted with cash. If you lent a friend $10,000 and they never repaid, you have an out-of-pocket loss — your own money left the account — and that loss is deductible, assuming you can prove it was a real loan. Accrual-basis businesses that already recorded the revenue are in the same position: they included the amount in income, so there’s a genuine loss when the account proves uncollectible.

Claiming It in the Right Year

Timing isn’t optional. You have to claim the deduction in the tax year the debt becomes worthless.¹ Claim it too early and the IRS says the debt wasn’t actually worthless yet. Claim it too late and the IRS says you missed your window.

Pinpointing that year isn’t always easy, especially when the debtor’s finances erode gradually. Look at the surrounding facts: when did the debtor file bankruptcy, when did collection efforts conclusively fail, when did the debtor’s assets stop being enough to cover the obligation? If you’re unsure, err toward the earlier year and document your reasoning.

If you missed the deduction entirely, there’s a safety net. The normal window for amending a return is three years from the original due date, but for bad debts and worthless securities you get seven years from the due date of the return for the year the debt became worthless.⁸ File Form 1040-X to claim the missed deduction. That extended window exists because worthlessness is often hard to identify in real time.

If the Debtor Later Pays You Back

Sometimes a debtor surprises you. If you wrote off a debt, took the deduction, and then received some or all of the money later, the Tax Benefit Rule decides whether the recovery is taxable.⁹

You include the recovered amount in income in the year you receive it, but only to the extent the original deduction actually reduced your tax. If the bad debt deduction didn’t lower your taxable income — because other deductions already wiped out your income that year, for example — the recovery is excluded from income.¹⁰ The rule is meant to reverse a benefit you received, not to tax you on money you never really got a break on.

1
Internal Revenue Service. Topic No. 453, Bad Debt Deduction
2
Office of the Law Revision Counsel. 26 USC 166 – Bad Debts
3
Internal Revenue Service. Publication 535, Business Expenses
4
Office of the Law Revision Counsel. 26 USC 1211 – Limitation on Capital Losses
5
Internal Revenue Service. Publication 550, Investment Income and Expenses
6
eCFR. 26 CFR 1.166-2 – Evidence of Worthlessness
7
GovInfo. 26 CFR 1.166-1 – Bad Debts
8
Office of the Law Revision Counsel. 26 USC 6511 – Limitations on Credit or Refund
9
Office of the Law Revision Counsel. 26 USC 111 – Recovery of Tax Benefit Items
10
eCFR. 26 CFR 1.111-1 – Recovery of Certain Items Previously Deducted or Credited