The cash basis problem: you can't deduct what you never earned
The bad debt deduction under Section 166 allows businesses to deduct amounts owed to them that become uncollectible. The critical requirement is that the debt must have been previously included in income. This is where most landlords are immediately disqualified.
Nearly all individual landlords file their taxes on the cash basis: you report rental income when you actually receive it, not when it is owed. If a tenant stops paying rent, that unpaid rent was never included in your income — so there is nothing to deduct. You can't lose what you never had on your tax return. The IRS is explicit about this: a cash-basis taxpayer has no bad debt deduction for uncollected rent (Revenue Ruling 70-151).
Accrual-basis landlords: the exception
An accrual-basis landlord reports income when it is earned (when the rent becomes due), not when received. If an accrual-basis landlord included $12,000 in rental income over the year and the tenant paid nothing, all $12,000 was reported in income — so the landlord can potentially deduct it as a bad debt under Section 166 once it becomes worthless.
Most individual landlords do not use accrual accounting. Accrual basis is more common for larger rental businesses — LLCs with multiple properties, commercial landlords, or professional property managers. If you file on accrual basis, maintain documentation that the debt is genuinely uncollectible: eviction proceedings, tenant bankruptcy, or other evidence.
What cash-basis landlords can deduct instead
While you cannot take a bad debt deduction on unpaid rent, there are related expenses you can deduct as ordinary business expenses: eviction legal fees (attorney fees, court costs, filing fees), costs of cleaning and repairing a unit after a bad tenant, advertising to find a replacement tenant, and property management fees incurred during the vacancy.
If you ultimately incur collection costs (a collection agency fee, for example) after a tenant leaves owing back rent, those fees are also deductible as a business expense. The focus shifts from the uncollected income (not deductible) to the out-of-pocket costs you actually incurred to deal with the bad tenant situation.
Frequently asked questions
Why can't cash-basis landlords deduct unpaid rent?
Because they never included the unpaid rent in income. You can only deduct a bad debt if the debt was previously included in income, which cash-basis taxpayers don't do until they receive payment.
Can an accrual-basis landlord deduct unpaid rent?
Yes, if the accrual-basis landlord previously included the rent in income and the debt is now worthless. Documentation of uncollectibility is required.
What can I deduct when a tenant doesn't pay?
Eviction costs, legal fees, repairs and cleaning after the tenant leaves, and advertising for a replacement tenant are all deductible as ordinary rental business expenses.
Sources
Educational information and estimates only. Not tax advice. Tax rules change and vary by situation; consult a qualified tax professional before acting.