For most people, federal tax returns and the records behind them should be kept for at least three years from the date the return was filed. That’s the default, and it’s enough for a straightforward W-2 filer. But how long to keep tax returns really depends on what’s on them: underreported income pushes the window to six years, worthless securities and bad debts to seven, and anything tied to property basis, depreciation, or retirement contributions can run for decades. A couple of situations remove the deadline entirely.
The Three-Year Default
The IRS generally has three years from the date you filed to assess additional tax. Once that window closes, the return is typically settled.1Internal Revenue Service. How Long Should I Keep Records?
The clock starts on the later of two dates: the day you actually filed or the original due date (April 15 for most individual filers). File early and the IRS treats the return as filed on the due date. File late and the clock starts on the actual filing date, which means the records need to survive longer.
During those three years, hold every document that backs up a line on your return: W-2s, 1099s, receipts for deductions, bank statements showing deposits, and anything else you’d need to reconstruct the numbers if questioned. If none of the extended rules below apply, you can dispose of them after the period expires.
Six Years If You Underreported Income
Underreport your gross income by more than 25% and the assessment window stretches to six years from the filing date.2Office of the Law Revision Counsel. 26 USC 6501 Limitations on Assessment and Collection – Section: Exceptions Intent isn’t required. An honest mistake, such as forgetting a 1099 from a side gig or misunderstanding which income is taxable, can trigger it.
A separate six-year rule applies to foreign financial assets. Omit more than $5,000 in income connected to assets that should have been reported on Form 8938, and the six-year window applies regardless of the 25% threshold.3Internal Revenue Service. Instructions for Form 8938 If you aren’t certain your income reporting is airtight, holding records for six years is a sensible default.
Seven Years for Worthless Securities and Bad Debts
Claim a deduction for a worthless security or a bad debt and the supporting records need to stick around for seven years.1Internal Revenue Service. How Long Should I Keep Records? The longer timeline reflects the extended claim period Congress allows for these losses, since it can take years to establish that a security is truly worthless or a debt genuinely uncollectible.
Records for these claims should include the original purchase documentation, evidence of the debt or investment, and whatever establishes that the asset became worthless or the debt uncollectible. The IRS scrutinizes these deductions closely, and the burden falls on you to prove the loss was real and properly timed.
Property and Investment Records
Records that establish the cost basis of property or investments follow a different rule: keep them for as long as you own the asset, then through the standard assessment period after you report the sale. The IRS states it directly: retain property records until the statute of limitations expires for the year of disposal.1Internal Revenue Service. How Long Should I Keep Records?
Basis is what your taxable gain or loss is measured against. For a house, that means the purchase agreement, closing statement, and receipts for capital improvements like a new roof or a kitchen renovation. For stocks, trade confirmations showing your purchase price. Improvements increase basis and reduce taxable gain, so losing the receipts costs you money at sale time.
Depreciation records deserve special care. If you claimed depreciation on rental property or business equipment, those schedules must survive for the asset’s entire life.1Internal Revenue Service. How Long Should I Keep Records? Without them, the IRS can assume you took the maximum allowable depreciation, which forces your basis lower and your taxable gain higher. This is one of the most expensive recordkeeping failures in tax law, and it catches landlords and small business owners regularly.
Inherited Property
When you inherit an asset, your basis is generally the fair market value at the date of the decedent’s death rather than what they originally paid. If the estate filed a federal estate tax return, you may receive a Schedule A from Form 8971 reporting the value assigned to your inherited property. If no estate return was filed, a professional appraisal at the date of death or the value used for state inheritance tax purposes serves as your basis documentation.4Internal Revenue Service. Basis of Assets
Keep these records for as long as you hold the inherited asset, plus the assessment period after sale. People often inherit property and hold it for decades before selling, which makes this one of the longest practical retention periods in personal tax recordkeeping.
Retirement Accounts and HSAs
Retirement records create some of the longest retention obligations most people will ever face, because the tax consequences don’t show up until distributions, which might be 30 or 40 years after the contributions.
If you made nondeductible contributions to a traditional IRA, keep Form 8606 and supporting records until you’ve taken every last distribution from all your traditional IRAs. That documentation is the only way to prove which portion of your withdrawals is tax-free return of after-tax money versus taxable earnings.5Internal Revenue Service. Instructions for Form 8606 Losing these records can mean paying tax twice on the same dollars. Roth IRA holders are in a similar spot: you need to prove when contributions were made and that the five-year holding period has been met for qualified distributions.
HSAs work the same way in principle. Distributions used for qualified medical expenses are tax-free, but you carry the burden of proving each one paid for an eligible expense, wasn’t reimbursed from another source, and wasn’t claimed as an itemized deduction.6Internal Revenue Service. Publication 969, Health Savings Accounts and Other Tax-Favored Health Plans Because HSAs allow you to reimburse yourself for medical expenses incurred in any prior year, some people stockpile receipts for years before taking distributions. Keep those receipts at least through the assessment period for any return the distribution appears on. Holding HSA medical receipts indefinitely is the safest approach.
Employment Tax Records
If you have employees, payroll and employment tax records must be kept for at least four years after the date the tax becomes due or is paid, whichever is later.7Internal Revenue Service. Employment Tax Recordkeeping This applies to records supporting Forms 941 and 940, along with wage records, withholding documentation, and payment dates.8Internal Revenue Service. Publication 583, Starting a Business and Keeping Records
Self-employed individuals who pay themselves and have no staff still fall under the standard three-year rule for their own income and expense records (longer, depending on circumstances). The four-year employment tax rule is specifically for records tied to wages and payroll taxes paid to or on behalf of workers.
When There’s No Deadline at All
Two situations remove the statute of limitations entirely, meaning the IRS can assess additional tax at any point in the future.
The first is filing a fraudulent return with intent to evade tax. If the IRS can establish fraud, there is no deadline for assessment. The second is simply not filing a required return. Skip a year and the assessment clock never starts.9Office of the Law Revision Counsel. 26 USC 6501 Limitations on Assessment and Collection In both cases, keep every record related to those years permanently. For a missed filing, submitting the overdue return is the only way to start the clock and eventually close the year.
What to Keep and How to Store It
The single most important document to retain is the return itself. Keep copies of every Form 1040 you file, along with any amended returns on Form 1040-X.8Internal Revenue Service. Publication 583, Starting a Business and Keeping Records The return is the reference point for everything else, and you’ll need it if you amend later or face an audit years down the line.
Supporting records fall into a few categories:
- Income documents: W-2s, all 1099 variants (1099-NEC, 1099-INT, 1099-DIV, 1099-G), K-1 schedules, and any other statements showing money received.
- Deduction proof: receipts, canceled checks, and bank or credit card statements for medical expenses, charitable gifts, business costs, and other claimed deductions.
- Credit documentation: records for education expenses, childcare costs, energy improvements, and any other credits claimed.
- Asset basis records: purchase agreements, closing statements, improvement receipts, and depreciation schedules.
For business filers reporting on Schedule C or corporate returns, detailed income and expense records are essential. The burden of proof for every deduction rests on you.
The IRS permits electronic recordkeeping in place of paper. Under Revenue Procedure 97-22, an electronic storage system that accurately reproduces your records satisfies federal retention requirements, and paper originals can be destroyed after the system is confirmed to work reliably.10Internal Revenue Service. Rev. Proc. 97-22 Digital copies must be legible, accurate, and accessible for the full retention period. Back up your files. Cloud storage, an external drive, or both can work, but a single copy on one device is asking for trouble over a seven-year or longer timeline.
State Rules May Run Longer
State tax authorities set their own statutes of limitations, and many allow longer than the federal three-year window. Some use a four-year assessment period; others match the federal timeline or set extended periods for specific situations. The safest approach is to use the longest applicable deadline across all jurisdictions where you file, so you’re not tracking federal and state retention periods separately. If your state allows four years to assess income tax, hold the supporting records for at least four years from the filing date, even after the federal period has expired.