How Long to Keep Your Tax Returns and Supporting Documents

How long you need to keep tax returns depends on what the IRS might question

Keep your federal tax return and supporting documents for at least three years from the date you filed or the due date, whichever is later. This is the standard lookback period the IRS uses for routine audits. However, you may need to keep records longer in specific situations: if you underreported income by 25% or more, the IRS can go back six years; if you filed a fraudulent return or did not file at all, there is no time limit; and if you claim a loss from a worthless security or bad debt deduction, keep those records indefinitely.

State tax returns follow their own timelines, which vary by state. Some states match the federal three-year rule, while others allow four, five, or seven years of lookback. Check your state's tax agency website for the specific requirement where you file.

Key Takeaways

The IRS can audit your return for three years from filing, so keep your return and all supporting documents (receipts, statements, forms) for at least that long.
If you underreported income by 25% or more, the IRS has six years to audit you, so extend your retention period to match.
State tax rules vary; some states require you to keep records longer than the federal three-year minimum, so check your state's requirement.
Certain documents like mortgage interest statements, charitable donation receipts, and business expense records should be kept for the full retention period, not discarded early.
Once the retention period expires, you can safely shred or delete records, though some people keep them longer for personal financial tracking.

The three-year federal standard and when it starts

The three-year rule begins on the later of two dates: the date you actually filed your return, or April 15 of the year following the tax year (the official due date). If you filed your 2023 return on February 1, 2024, the three-year clock starts February 1, 2024, and expires February 1, 2027. If you filed the same return on October 15, 2024 (using an extension), the clock starts October 15, 2024, and expires October 15, 2027. This matters because the IRS measures its audit window from the date it can actually examine your filed return, not from when the tax year ended.

During this three-year window, the IRS can request an examination of your return without special justification. After three years, the agency generally cannot audit you unless it has evidence of a substantial error or fraud. Keeping your records for the full three years protects you if the IRS does reach out, because you can produce the documentation that supports every number on your return.

When to keep records for six years or longer

The six-year rule applies if you omitted more than 25% of your gross income on your return. This is a higher bar than straightforward making a mistake—it means the IRS can demonstrate that your reported income was significantly understated. If you reported $40,000 in income but actually earned $60,000, that is a 33% underreport, and the IRS has six years to audit. Keep all income documentation, bank statements, 1099 forms, and W-2 forms for six years in this scenario.

There is no statute of limitations if you filed a fraudulent return or did not file at all. The IRS can go back as far as it wants. Similarly, if you claim a deduction for a worthless security or a bad debt, keep those records indefinitely—the IRS may question these years later, and you need proof that the security became worthless or the debt became uncollectible in the year you claimed it.

State tax return retention requirements

Your state may require a longer retention period than the federal government. California, for example, follows the federal three-year rule but allows four years for certain situations. New York requires four years. Some states with income tax go back five or seven years. A few states with no income tax (such as Texas, Florida, and Nevada) have no state return retention requirement, though you may still need federal records if you have multistate income.

The safest approach is to check your state's tax agency website or call their helpline to confirm the exact period. If your state requires five years and the federal government requires three, keep your records for five years. You are not penalized for keeping records longer than required, but you are at risk if you discard them too early and your state audits you.

What documents to keep with your tax return

Keep the actual filed return (your copy of the Form 1040 and any schedules you attached) along with every document that supports the numbers on it. This includes W-2 forms from employers, 1099 forms for interest, dividends, and self-employment income, receipts for charitable donations, mortgage interest statements (Form 1098), property tax statements, medical expense receipts, business expense records, mileage logs, and bank or brokerage statements showing investment income or losses. If you claimed a home office deduction, keep the square footage calculation and photos. If you deducted business meals, keep the receipt and a note of who attended and the business purpose.

For self-employed filers, the stakes are higher. Keep invoices, expense receipts, payroll records, and quarterly estimated tax payment confirmations. The IRS scrutinizes self-employment returns more closely than W-2 income, so thorough documentation is your best defense. If you filed an extension, keep the extension form itself (Form 4868) along with your return.

Digital storage and safe disposal after the retention period

You do not have to keep paper copies. Scan your return and supporting documents and store them digitally—on an external hard drive, in cloud storage, or both. Many tax software providers (TurboTax, H&R Block, TaxAct) store your return in your account for several years, though you should not rely on this as your only backup. Take a photo or scan of each receipt and document, organize them by year and category, and back them up in at least two places.

Once the retention period expires, you can safely shred paper documents or delete digital files. Some people keep records longer for personal reasons—to track long-term investment performance, to document a pattern of charitable giving, or straightforward out of caution. There is no harm in keeping them longer. However, once three years (or six, or your state's requirement) have passed, you are no longer required to hold onto them for tax purposes.

Special situations that extend your retention timeline

If you file an amended return (Form 1040-X), the three-year clock restarts from the date you file the amendment, not the original return. If you filed your 2023 return in April 2024 and then filed an amended return in August 2025, you must keep records until August 2028. Similarly, if you carry forward a loss (such as a net operating loss or capital loss carryforward), keep the return that generated that loss for as long as you claim the carryforward on future returns, plus three additional years after the last year you use it.

If you are involved in an IRS examination or dispute, do not discard any records related to that return until the examination is fully closed and any appeals are resolved. The IRS will tell you in writing when the examination is complete. After that, the standard retention periods explore again.

Frequently Asked Questions

Can I throw away my tax return after one year?

No. The IRS has three years to audit most returns, so you need to keep your return and supporting documents for at least three years from the filing date. If you discard records early and the IRS requests an examination, you cannot produce the proof you need to defend your return.

Do I need to keep receipts if I use tax software?

Yes. Tax software stores your return, but it does not store your receipts and supporting documents. You must keep those separately. If the IRS audits you, the software account is not proof—you need the actual receipts, statements, and documents that back up the numbers you entered.

What if I lost my receipts but still have my bank statements?

Bank and credit card statements can serve as backup documentation for many deductions, especially business expenses and charitable donations. However, they are not a complete substitute for receipts. A statement shows you spent money, but not always what you spent it on or whether it qualifies as deductible. Keep both if possible.

How long should I keep records for a rental property or investment account?

Keep records for the standard three years after filing, plus an additional three years after you sell the property or close the account. This covers both the years you claimed deductions or reported income and the year you report the sale or disposition. For real estate, some people keep records indefinitely to document the cost basis in case of future disputes.

Do I need to keep my state return separate from my federal return?

You can store them together, but follow your state's retention requirement, which may be longer than three years. If your state requires five years, keep the entire file (federal and state) for five years. Organize by tax year so you know which documents belong to which return.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.