The retention question has a clean answer, and it is built around how long the IRS has to question a return. That window is called the period of limitations, and everything else follows from it.
The standard periods
| Situation | Keep for |
|---|---|
| Ordinary return, nothing unusual | 3 years from the filing date or the due date, whichever is later |
| You underreported income by more than 25 percent | 6 years |
| You claimed a loss from worthless securities or bad debt | 7 years |
| You did not file a return | Indefinitely, because the clock never started |
| You filed a fraudulent return | Indefinitely |
| Employment tax records | 4 years after the tax is due or paid |
These come straight from the IRS guidance on how long to keep records. Three years is the answer for most households in most years.
Documents with much longer lives
- Property records. Purchase documents, closing statements and receipts for improvements establish your cost basis. Keep them for as long as you own the property, plus the retention period after the year you sell it. A kitchen renovation receipt from 2011 can reduce a capital gain in 2032.
- Investment purchase records. Brokers now report basis for most covered securities, but not for older lots, transfers between firms, inherited assets or gifts. Keep confirmations for anything acquired before basis reporting, and for anything you moved.
- Retirement account records. Form 8606 for non-deductible IRA contributions matters decades later, because it is what stops you paying tax twice on the same money. Keep every one.
- Business asset records. Depreciation schedules run for years, and the basis question survives the asset.
- Divorce decrees, custody agreements and estate documents, which decide who claims what long after the year they were signed.
State periods can be longer
State statutes of limitation are not always three years, and a few states allow substantially longer, particularly where a federal adjustment flows through. If your state has an income tax, check its retention guidance rather than assuming the federal period covers you. Start from the official list of state tax agencies.
Digital copies are fine
The IRS accepts electronic records provided they are legible, complete and can be produced on request. A scanned receipt is as good as the paper one, and considerably more likely to still exist in five years. A workable system:
- One folder per tax year, named with the year.
- Inside it: the filed return as a PDF, a subfolder of income documents, and one of deduction support.
- A separate permanent folder for property, investment basis and retirement records that outlive the year.
- Backups in two places, at least one of them off your computer. Thermal receipt paper fades to blank within a couple of years, so photograph those immediately.
What the IRS already has
If you lose everything, you are not starting from zero. A wage and income transcript lists most information returns filed under your Social Security number, and a tax return transcript summarises what you filed. Both are free, and they go back several years. What they will not reproduce is your deduction support, which is exactly the part worth protecting.
Disposing of the rest
Anything with a Social Security number, an account number or a date of birth gets shredded rather than binned. Tax paperwork is the densest concentration of identity data most households own, and disposal is one of the ways it leaks. The Federal Trade Commission covers the wider identity theft picture, and our guide to tax scams covers the tax-season version.
The annual routine
Once a year, when the current return is filed, do two things: file this year's folder, and delete the folder from four years ago after checking it contains nothing on the permanent list. Ten minutes, and it prevents both the shoebox and the panic.