How long the IRS says to keep tax returns
Keep your tax returns and the documents that support them for at least three years from the date you filed or the due date, whichever is later. This is the standard rule the IRS uses to audit returns. If you filed early in January for the prior year, count three years from that filing date. If you filed on April 15, count three years from April 15.
The three-year window is not absolute. The IRS can go back six years if it finds you underreported income by 25 percent or more. If you did not file a return at all, or filed a fraudulent return, there is no time limit — the IRS can audit you indefinitely. For most people filing honestly and on time, three years is the practical threshold.
Key Takeaways
- Keep tax returns and supporting documents for at least three years from the filing date or due date, whichever is later.
- The IRS can go back six years if you underreported income by 25 percent or more, so keeping records longer is safer if you are unsure about your filing.
- If you did not file a return or filed a fraudulent one, the IRS has no time limit to audit you.
- Supporting documents include receipts, invoices, bank statements, and mortgage interest statements — anything that proves the numbers on your return.
- State tax agencies often have different rules, so check your state's requirements separately.
What documents count as supporting records
Supporting documents are the receipts, statements, and records that back up the numbers on your return. For a W-2 employee, this includes your W-2 form itself, pay stubs showing taxes withheld, and any 1099 forms for side income. For someone who itemizes deductions, keep receipts for mortgage interest statements, property tax bills, charitable donation records, and medical expense invoices.
If you are self-employed or own a business, keep invoices you sent to customers, receipts for business expenses, bank statements showing deposits and payments, mileage logs if you claim vehicle deductions, and any contracts or agreements with clients. If you claim home office deductions, keep the square footage calculation and photos showing the dedicated workspace. The rule is straightforward: if a number appears on your return, you should have a document that proves it.
Digital records count the same as paper. A PDF of a receipt, a screenshot of a bank statement, or an email confirmation of a charitable donation all serve as supporting documents. Many people now photograph receipts and store them in folders on their phone or computer, which works fine as long as the image is legible.
When to keep records longer than three years
Keep records for six years if you reported less income than you actually received. The IRS defines this as underreporting by 25 percent or more. For example, if you earned $40,000 but reported $30,000, you underreported by 25 percent. In this case, the IRS can audit you up to six years after filing.
Keep records indefinitely if you did not file a return when you were supposed to, or if you filed a return you knew was false. There is no statute of limitations in these cases. If you are uncertain whether you filed correctly, it is safer to keep records for six years rather than three, especially if your income was variable or you had multiple income sources.
If you claimed a loss on a business or rental property, some tax professionals recommend keeping those records for at least six years, since losses can trigger IRS scrutiny. The same applies if you claimed large deductions relative to your income — the longer you keep the documents, the easier it is to defend the deduction if questioned.
State tax return requirements
Your state tax agency may have different rules than the federal IRS. Most states follow the three-year federal standard, but some require you to keep records longer. California, for instance, generally follows the three-year rule but can go back four years if there is a substantial underreporting of income. New York allows the state tax department to go back six years in certain cases.
If you live in a state with an income tax, check your state's tax department website or call their helpline to confirm the retention period. The safest approach is to keep records for as long as the longest requirement — federal or state — applies to you. If you have moved between states during the years you are keeping records for, you may need to follow the rules of each state where you filed.
How to organize and store tax documents
Create a folder for each tax year and label it clearly with the year. Inside, group documents by category: income documents (W-2s, 1099s, K-1s), deduction receipts (medical, charitable, business), and supporting statements (mortgage interest, property tax, brokerage statements). This makes it much faster to find a specific receipt if the IRS asks about it.
Store originals in a safe place — a filing cabinet, safe deposit box, or fireproof safe at home. Many people keep digital copies as well by photographing or scanning documents. Cloud storage services like Google Drive or Dropbox work for this, as long as you keep the files organized and can retrieve them quickly. If you use tax software, many programs store your return digitally, but you should also keep your own copy of the PDF.
Do not throw away documents the moment the three-year window closes. Life happens — you might move, lose track of time, or discover an error years later. Keeping records for five or six years costs almost nothing and protects you against unexpected questions.
What happens if you cannot find a document
If the IRS asks about a deduction and you cannot locate the original receipt, you have options. You can provide other evidence that the expense happened: a credit card statement showing the charge, a bank statement showing a withdrawal, an email confirmation, or even a written statement explaining what the expense was and why you no longer have the receipt. The IRS does not always reject a deduction just because the original receipt is missing.
If you are audited and cannot produce supporting documents, the IRS may disallow the deduction or charge you penalties and interest on the unpaid tax. This is why keeping organized records matters. If you discover you are missing a document after an audit has started, tell the IRS representative when ready and provide whatever alternative evidence you have.
When you can safely discard old returns
After three years have passed (or six years if you underreported income), you can discard the supporting documents if you choose to. Shred them rather than throwing them in the trash, since they contain personal information like your Social Security number and bank account details. Many banks and libraries offer free shredding days, or you can use a home shredder.
Keep the actual tax return itself — the Form 1040 and any schedules you filed — for longer. Some people keep returns indefinitely because they take up little space and can be useful for reference. If you ever need to prove your income for a mortgage, loan, or rental process, having old returns on hand is convenient. Digital copies stored safely cost nothing to maintain.
Frequently Asked Questions
Do I need to keep receipts if I use tax software?
Yes. Tax software stores your return, but the IRS still expects you to have the receipts and documents that prove the numbers on that return. The software is a tool for filing, not a replacement for your records. Keep both the software copy of your return and the supporting documents.
What if I filed my return late — does the three-year clock start from when I filed or from the due date?
It starts from whichever is later. If the return was due April 15 but you filed on June 1, count three years from June 1. If you filed early, count from the filing date. The IRS uses the later date to give itself the full audit window.
Can I throw away documents after I file my return?
No. Keep them for at least three years after filing. The IRS can request documents during an audit, which can happen years after you file. Discarding records too early leaves you unable to defend your return if questioned.
Do I need to keep receipts for small purchases under $75?
Generally, yes. The IRS does not have a dollar threshold below which receipts are not required. However, for business expenses, the IRS does allow you to use other evidence (like a credit card statement or bank record) if the receipt is lost, as long as you can show the expense happened.
What if I am self-employed — do I keep records longer?
Follow the same three-year rule, but consider keeping records for six years because self-employed income is audited more frequently than W-2 income. The longer retention period protects you if the IRS questions your business deductions or income reporting.