IRS recordkeeping requirements come down to a simple principle: every number on your return should be traceable to a document, and you have to hold those documents long enough to defend the return if the IRS comes asking. If you keep proper records and produce credible evidence during a dispute, the burden of proof shifts from you to the IRS.1Office of the Law Revision Counsel. 26 USC 7491 – Burden of Proof Lose the paperwork and you lose that protection. The IRS can disallow deductions outright, add a 20 percent accuracy-related penalty on the resulting underpayment, and leave you covering the difference.2Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments
What to Keep for Income and Deductions
Start with income. Save every W-2 from an employer, every 1099 for interest, dividends, freelance work, or retirement distributions, and the bank and brokerage statements showing deposits and investment activity. Third parties send copies of most of these forms to the IRS, so any mismatch between your return and their file will surface.
Deductions need their own paper trail. Canceled checks, invoices, and sales receipts back up business expenses and itemized deductions. For charitable contributions of $250 or more, you need a written acknowledgment from the organization stating the cash amount or a description of donated property, and whether you received anything in return.3Internal Revenue Service. Topic No. 506, Charitable Contributions Medical bills, insurance explanations of benefits, Form 1098 for mortgage interest, property tax bills, and student loan interest statements support the corresponding lines on your return.
How Long to Keep Records
The retention period depends on what’s on your return and which statute of limitations applies.
- Three years. The standard window. The IRS has three years from the filing date to assess additional tax, so keep supporting records at least that long. If you filed before the due date, the clock starts on the due date.4Office of the Law Revision Counsel. 26 USC 6501 – Limitations on Assessment and Collection
- Six years. If you omitted more than 25 percent of the gross income reported on your return, the IRS gets a longer window to catch the discrepancy.
- Seven years. Applies if you claimed a deduction for worthless securities or a bad debt.5Internal Revenue Service. Topic No. 305, Recordkeeping
- Indefinitely. If you filed a fraudulent return or never filed at all, there is no statute of limitations. Keep everything.
Many people destroy records at the three-year mark without checking whether a longer window applies. Holding records for seven years covers nearly every scenario short of fraud. States often have their own audit windows that run longer than the federal three years, so check your state’s rules before shredding anything.
Records That Outlive the Standard Retention Window
Basis records are where sloppy retention causes real financial pain. Your basis in an asset is what you paid for it, adjusted for improvements, depreciation, and other factors. When you sell, the difference between the sale price and your basis is your taxable gain. Lose the records proving your basis, and the IRS can treat the entire sale price as profit.
Real Estate and Home Improvements
A homeowner may need purchase records and improvement receipts spanning decades. Renovations that add value or extend the home’s life increase your basis and reduce your eventual taxable gain: kitchen remodels, new roofs, room additions, updated wiring, new driveways. Routine repairs like patching drywall or replacing a broken window do not count. Keep purchase orders, receipts, bank statements for electronic payments, and contractor invoices for every qualifying project. Hold these records for as long as you own the property, plus the retention period for the return you file in the year you sell.
Inherited Property
Property you inherit generally takes a basis equal to its fair market value on the date the previous owner died. If the estate was large enough to require a federal estate tax return, the executor should provide a Schedule A from Form 8971 showing the value reported to the IRS. Without one, a real estate appraisal from around the date of death or the value used for state inheritance tax purposes can establish your starting basis. Exception: if you or your spouse gave the property to the decedent within one year before their death, your basis is the decedent’s adjusted basis rather than the stepped-up fair market value.6Internal Revenue Service. Publication 551, Basis of Assets
Stocks and Funds
Brokerages report cost basis to the IRS for shares purchased after certain cutoff dates, but records for older holdings, transferred accounts, and reinvested dividends can be incomplete. Keep trade confirmations, dividend reinvestment statements, and records of stock splits or mergers until the statute of limitations expires for the year you sell.
Gift Tax Records
If you make gifts exceeding the annual exclusion or use any of your lifetime exemption, Form 709 records must be retained as long as their contents could become relevant to any federal tax matter.7Federal Register. Proposed Collection; Requesting Comments on Form 709 That effectively means indefinitely, because the cumulative total of lifetime gifts feeds into estate tax calculations after death. Recipients need to know the donor’s basis, since gifted assets carry over that basis rather than stepping up to market value.
Special Situations With Extra Requirements
Digital Assets and Cryptocurrency
Crypto recordkeeping is where most people fall behind. The IRS requires you to track the type of digital asset, the date and time of every transaction, the number of units involved, and the fair market value in U.S. dollars at the moment of the transaction.8Internal Revenue Service. Digital Assets You also need to document your basis: what you paid for each unit and when you acquired it.
Each sale, swap, or spend counts as a taxable disposition. Trading Bitcoin for Ethereum in 2021 and then selling that Ethereum in 2025 means you need records for both transactions to calculate the later gain correctly. Exchanges shut down, change data formats, and purge old records. Download your full transaction history at least annually and store it somewhere you control.8Internal Revenue Service. Digital Assets
Gambling Winnings and Losses
If you gamble, the IRS expects a contemporaneous diary. It must include the date and type of each wager, the name and location of the establishment, the names of anyone with you, and the amounts won or lost.9Internal Revenue Service. Diary or Similar Record Also keep any Form W-2G, wagering tickets, canceled checks, credit records, and payout slips. Losses are deductible only up to winnings and only if you itemize, so the diary is what separates a legitimate deduction from one the IRS throws out.
Health Savings Accounts
HSA distributions are tax-free only when used for qualified medical expenses. The IRS can ask you to prove that every withdrawal covered an eligible cost, that you didn’t reimburse the same expense from another source, and that you didn’t also claim the expense as an itemized deduction.10Internal Revenue Service. Publication 969, Health Savings Accounts and Other Tax-Favored Health Plans You don’t submit these receipts with your return, but you need to produce them on request. Because some people reimburse themselves from an HSA years after paying a medical bill, the practical retention period can stretch well beyond the usual three years.
Home Office Deduction
Self-employed taxpayers claiming the home office deduction have two methods with different recordkeeping demands. The regular method requires you to track actual expenses like utilities, insurance, rent or mortgage interest, and repairs, then allocate them based on the percentage of your home used exclusively for business. That means keeping every bill and measuring the workspace. The simplified method uses a flat $5-per-square-foot rate capped at 300 square feet, which drops the expense tracking but still requires you to document the area used exclusively and regularly for business.11Internal Revenue Service. Simplified Option for Home Office Deduction
Employment Tax Records
If you have employees, retain employment tax records for at least four years after the tax becomes due or is paid, whichever is later.12Internal Revenue Service. How Long Should I Keep Records Records should include each employee’s name, address, Social Security number, total compensation, and documentation of federal income tax withheld along with Social Security, Medicare, and unemployment tax payments. The four-year rule exceeds the standard three-year window because employment tax disputes often surface later, triggered by a worker reclassification issue or an employee filing for benefits.
Storing Your Records
The IRS has accepted electronic storage for tax records since Revenue Procedure 97-22, which established that scanned images and electronically transferred records qualify as valid documentation as long as they remain legible and can be reproduced as clear paper copies on demand.13Internal Revenue Service. Revenue Procedure 97-22 Scanning is especially worthwhile for thermal paper receipts, which fade within a couple of years.
Consumer encrypted cloud storage runs roughly $1 to $12 per month depending on provider and tier. Whichever service you choose, confirm it offers encryption and two-factor authentication. Keep a local backup as well, on an external drive or USB device, so no single failure wipes out years of records.
If you prefer paper, group documents by tax year and category. A labeled accordion file for income, deductions, asset purchases, and employment records saves significant time during an audit. Store originals in a fireproof safe or a bank safe deposit box. When records pass their retention period, professional shredding services handle disposal securely and typically charge by the pound or per box.
If Your Records Are Lost or Destroyed
Fires, floods, and theft happen. The IRS has a process for rebuilding what you can.
Start with your own tax history. Free transcripts are available through the IRS “Get Transcript” tool online or by calling 800-908-9946. A tax return transcript shows most line items from your original return as filed, a tax account transcript shows post-filing changes, and a record of account transcript combines both.14Internal Revenue Service. Transcript Types for Individuals and Ways to Order Them For an actual photocopy of a past return, submit Form 4506. After a federally declared disaster, writing the disaster designation in red at the top of that form can waive the fee and speed processing.15Internal Revenue Service. Reconstructing Records After a Natural Disaster or Casualty Loss
For property records, contact title companies, lenders, or real estate brokers for purchase documents, and reach out to contractors for past improvement work. Insurance companies, county assessor offices, and mortgage lenders often have appraisals that establish fair market value. For vehicles, Kelley Blue Book or the National Automobile Dealers Association can help determine current value, and your dealer or lien holder may have the original purchase contract.15Internal Revenue Service. Reconstructing Records After a Natural Disaster or Casualty Loss
For personal property and everyday expenses, credit card and bank statements are your best reconstruction tool. Contact your card issuer or bank for past statements going back at least a year. Check your phone’s photo library for images that happen to show damaged or destroyed items in the background. For business records, request duplicate invoices from suppliers and pull copies of payroll tax returns and sales tax reports from the relevant agencies.15Internal Revenue Service. Reconstructing Records After a Natural Disaster or Casualty Loss
Reconstruction is time-consuming and incomplete by nature. The IRS recognizes that disasters happen, and showing a good-faith effort to rebuild records goes a long way toward maintaining credibility during an examination.