You can generally shred tax documents three years after you file the return they support, because that’s how long the IRS has to audit a standard return and assess more tax. Knowing when to shred tax documents gets more complicated in a few specific situations: six years if you may have significantly underreported income, seven years for worthless securities and bad debt deductions, and no time limit at all if a return was fraudulent or never filed. A separate category of records — anything tied to property basis or nondeductible retirement contributions — needs to survive far longer than the return it first appeared on.
The Three-Year Default
The IRS has three years from the date you file a return to assess additional tax.1Office of the Law Revision Counsel. 26 USC 6501 – Limitations on Assessment and Collection File early and the clock still doesn’t start until the return’s due date. A 2024 return filed on March 1, 2025 is treated as filed on April 15, 2025, and the assessment window runs to April 15, 2028. Receipts, bank statements, 1099s, canceled checks, and anything else that backs a number on that return needs to survive until that date passes.
Once the three years lapse, the paperwork behind a routine return becomes safe to destroy. During an active audit, being unable to produce a receipt usually means losing the deduction or credit it supported, so keeping records a few extra months past the deadline is cheap insurance.
When You Need to Hold Records Longer
Six Years for Substantial Underreporting
If you omitted gross income exceeding 25 percent of what you actually reported, the IRS gets six years instead of three.1Office of the Law Revision Counsel. 26 USC 6501 – Limitations on Assessment and Collection This isn’t limited to deliberate evasion. Forgetting a freelance payment, missing a brokerage’s capital gains, or misclassifying income can all trigger the longer window. If there’s any realistic chance your return understated income by that much, hold the supporting records for a full six years.
Seven Years for Worthless Securities and Bad Debts
If you claimed a deduction for a loss on worthless securities or a bad debt, keep the records tied to that specific loss for seven years from the return’s due date.2Internal Revenue Service. How Long Should I Keep Records The seven-year rule applies only to those particular records, not to every document from that tax year.
No Limit for Fraud or Unfiled Years
There is no statute of limitations when a return was fraudulent or when no return was filed at all. The IRS can assess tax at any time.1Office of the Law Revision Counsel. 26 USC 6501 – Limitations on Assessment and Collection Records tied to any such year can never be safely destroyed.
Don’t Forget the Refund Clock
Retention isn’t only about IRS audits. If you overpaid and want money back, you generally have three years from filing the original return, or two years from paying the tax, whichever is later, to file an amended return.3Office of the Law Revision Counsel. 26 USC 6511 – Limitations on Credit or Refund If you filed early, count from the April deadline.4Internal Revenue Service. File an Amended Return Shredding at the earliest possible moment can strip you of the documentation you’d need to claim a refund you’re actually owed. Three full years from filing is the practical floor even when you think the return was perfect.
Records That Outlive the Return
Property and Capital Assets
Keep records related to property until the statute of limitations expires for the tax year in which you sell or dispose of it.5Internal Revenue Service. Topic No. 305, Recordkeeping Buy a house in 2010, sell it in 2030, and the closing documents, improvement receipts, and any depreciation records from a rental period all need to survive until roughly 2033. Those numbers feed directly into the gain calculation on the sale; losing them can mean paying tax on money you actually spent.
Like-kind exchanges compound the problem. When you swap one investment property for another, the old basis carries into the new. Records for both properties need to survive until the limitations period expires for the year you finally sell in a taxable transaction, which can stretch decades if you do multiple exchanges.2Internal Revenue Service. How Long Should I Keep Records
Nondeductible IRA Contributions
If you’ve made nondeductible contributions to a traditional IRA, keep Form 8606 and related records until every dollar has been distributed from the account. These documents prove your basis; without them you risk paying tax a second time on money you already paid tax on.6Internal Revenue Service. Instructions for Form 8606 (2025) That means keeping each year’s Form 8606, Form 5498 statements showing contributions and account values, and 1099-R forms showing distributions. For someone in their 40s, that can mean 30-plus years of retention.
Keep the Returns Themselves
The IRS recommends keeping copies of your actual filed returns even after you shred the supporting documents.2Internal Revenue Service. How Long Should I Keep Records Returns are compact, especially as PDFs, and they’re useful for preparing future returns, filing amendments, and calculating anything that depends on prior-year figures. Requesting IRS transcripts years later is possible but slow.
Extra Rules for Business Owners
If you have employees, keep all employment tax records for at least four years after the tax becomes due or is paid, whichever is later. That’s Forms 941 and 940, W-2s, W-4 withholding certificates, and records of wages, tips, and deposits.7Internal Revenue Service. Employment Tax Recordkeeping The four-year employment tax window is longer than the three-year personal rule, and confusing them is a common mistake.
Form I-9 has its own schedule: retain each employee’s I-9 for three years after the hire date or one year after employment ends, whichever is later.8USCIS. 10.0 Retaining Form I-9 Someone who worked for you five years has their I-9 kept until one year after they leave; a six-month employee’s I-9 is kept until three years after hire. I-9s contain identity documents, so they need secure disposal once the period ends.
Shred, Don’t Just Toss
A single tax return contains your Social Security number, home address, employer details, bank account and routing numbers, and a full picture of your income. W-2s have historically shown full Social Security numbers; employers may now truncate them to the last four digits, but adoption isn’t universal and older W-2s in your files almost certainly show the full number.9Federal Register. Use of Truncated Taxpayer Identification Numbers on Forms W-2 1099s, Schedule C filings with EINs, mortgage interest statements, and brokerage summaries carry enough data to open credit in your name. The recycling bin is not a safe destination.
Match the method to the risk:
- Strip-cut shredders slice paper into long ribbons. Fast, but a determined person can reassemble the strips. Fine for junk mail, not for tax paperwork with Social Security numbers.
- Cross-cut shredders produce small rectangular confetti and are the practical choice for most home tax records.
- Micro-cut shredders reduce paper to tiny particles, making reconstruction essentially impossible. Worth the slower feed for particularly sensitive documents.
For years of accumulated files, professional shredding services use industrial equipment and typically provide a certificate of destruction.
Digital Files Need Real Deletion
PDFs of returns, scanned receipts, and accounting software files carry the same retention obligations as paper, and the IRS can request digital accounting records during an audit.10Internal Revenue Service. Use of Electronic Accounting Software Records – Frequently Asked Questions and Answers Dragging a file to the trash doesn’t actually erase it from the drive. NIST guidance on media sanitization outlines overwriting, purging, and physical destruction as the reliable options.11National Institute of Standards and Technology. Guidelines for Media Sanitization – NIST SP 800-88 Rev. 1 For most individuals, a reputable file-wiping utility that overwrites data multiple times is enough. When you’re disposing of an old computer or external drive, physically destroying the drive or using a professional data destruction service is safer. Solid-state drives resist simple overwriting, so physical destruction is often the better call.
Check Before You Shred
The IRS isn’t the only entity that might need your records. Mortgage lenders, insurance companies, and creditors may require documents longer than the IRS does.2Internal Revenue Service. How Long Should I Keep Records A homeowner’s insurance claim years after a renovation might rely on the same receipts you used for a deduction. Loan applications routinely ask for two or three years of returns, and having them on hand beats waiting on an IRS transcript.
State tax agencies set their own retention windows. Most track the federal timeline closely, but a handful of states run longer assessment periods. If your state has an income tax, confirm its recommendations before anything goes into the shredder.