How Long to Keep Tax Records, by the IRS Clock

Two months past the April deadline, the urge strikes: clear out the file drawer, shred the decade of receipts, reclaim the closet. Before the shredder warms up, it is worth knowing that the IRS runs several different clocks on your old returns, and the right answer to “how long do I keep this” ranges from three years to forever, depending on what the paper is.

The rules are not complicated once you see the logic. Each retention period matches a “period of limitations,” the window during which you can still amend a return to claim a refund, or the IRS can still assess additional tax. Keep the records as long as either side of that window is open, and you can prove your numbers if anyone asks. Here is each clock, and what belongs in the keep-forever pile.

The three-year baseline

For a typical, honestly filed return, the IRS guidance on how long to keep records sets the core rule: keep the return and everything supporting it for three years from the date you filed. A return filed early counts as filed on the due date, so a 2025 return submitted in February 2026 starts its clock on April 15, 2026, and its records can safely go in spring 2029.

That three-year window is also your window. A claim for a refund generally must be filed within three years of the return date or two years from when you paid the tax, whichever is later. Toss the substantiation early and you can lose the practical ability to amend, even while the right technically remains. The supporting cast matters as much as the return itself: W-2s, 1099s, receipts for deductions you claimed, mileage logs, charitable acknowledgment letters, and bank statements that back up reported income.

When three years becomes six, or seven

The IRS gets six years to assess tax if a return omits more than 25 percent of the gross income that should have been reported. You presumably do not plan to underreport, but the six-year rule is why cautious filers with complex income, multiple 1099s, K-1s, side businesses, asset sales, keep records six years instead of three. Honest disputes about what counted as income are exactly the cases where the longer window gets invoked.

A narrower seven-year rule applies to anyone who claims a deduction for a worthless security or a bad debt. Those deductions turn on facts that can be challenged long after the fact, and the law grants the extra time accordingly. If you wrote off a loan to a relative or stock that went to zero, that year’s file waits seven years.

Records that outlive the return they belong to

Some documents are tied not to a tax year but to an asset, and they must survive until the asset is gone plus the limitation period. Records that establish basis, what you paid, are the big category: closing documents from buying a home, receipts for improvements, brokerage confirmations for securities, and records of reinvested dividends. As the IRS recordkeeping overview in Topic 305 explains, property records should generally be kept until the period of limitations expires for the year you dispose of the property. Sell a house in 2026 that you bought in 1998, and the 1998 closing file is still doing tax work in 2029 and beyond.

The same logic covers nondeductible IRA contributions tracked on Form 8606, records of home office depreciation, and anything else that will feed a future gain-or-loss calculation. If a paper helps establish what something cost you, its retirement date is tied to the asset’s, not the calendar’s.

Employers, businesses, and the four-year rule

Anyone with employees, including households that pay a nanny, has a separate obligation: employment tax records must be kept at least four years after the tax becomes due or is paid, whichever is later. That includes payroll registers, employee information, and copies of filed employment tax returns. Self-employed people should also hold the records behind their Schedule C on the longer six-year horizon, since business income is where the 25 percent omission rule most plausibly comes into play.

What to keep forever

Two situations have no statute of limitations at all: filing a fraudulent return, and filing no return. The practical consequence for honest people is simple and often overlooked. If there is a year you never filed, no clock has ever started running on it, so keep whatever documents you have for that year indefinitely.

Beyond the legal minimums, keep copies of the returns themselves forever. They take little space, especially as PDFs, and they answer questions the IRS is not the only one asking: mortgage lenders want them, disability and financial aid applications use them, and state tax agencies run their own limitation periods that are sometimes longer than the federal ones. Your W-2s deserve permanent status too, as backup proof of your earnings history for Social Security; you can verify what the SSA already has on file through a my Social Security account, and an old W-2 is the evidence that fixes any year they got wrong.

A workable system needs only three folders, physical or digital: a current-year file that catches documents as they arrive, a set of annual files held for six to seven years, and a permanent file for returns, W-2s, and asset records. When June housecleaning comes around, only the annual files past their window go to the shredder, and shredding, not the trash, is the right exit for anything carrying a Social Security number. The IRS may never ask for any of it. But every rule above exists because, for someone, some year, they did.