How Long to Keep Your Tax Returns and Supporting Documents

Keep your tax returns and receipts for at least three years after you file

The IRS can audit your return up to three years after you file it, so you need to hold onto your tax return, W-2s, 1099s, receipts, and other supporting documents for at least that long. If you underreported your income by 25 percent or more, the IRS can go back six years. If you never filed a return for a year, there is no time limit — the IRS can audit that year whenever they want. Keeping records longer than three years costs you nothing and protects you if questions come up later.

The three-year window is the most common retention period because it matches the statute of limitations for most tax audits. This means the IRS has three years from the date you file to decide whether to examine your return. After three years pass with no contact from the IRS, you are generally safe to discard supporting documents for that year. However, certain situations — like claiming business losses, amending a return, or never filing at all — extend this timeline.

Key Takeaways

• Keep all tax documents for at least three years after filing, because the IRS has three years to audit most returns.
• If you underreported income by 25 percent or more, keep records for six years instead.
• For years you never filed a return, keep records indefinitely because there is no statute of limitations.
• Supporting documents include receipts, invoices, bank statements, mortgage statements, and donation records — anything that proves what you claimed on your return.
• After the retention period ends, you can shred paper documents or delete digital files, but consider keeping tax returns themselves for your own records.

What documents to keep and for how long

Your tax return itself is the form you file — the 1040, plus any schedules like Schedule C for self-employment or Schedule A for itemized deductions. Keep the actual return you filed, not just a copy. Keep it for at least three years, though many people keep returns indefinitely because they take up little space and may be needed for mortgage applications, loan requests, or proof of income later.

Supporting documents are the receipts, statements, and records that back up what you claimed. These include W-2s and 1099s from employers and clients, bank statements showing income and expenses, credit card statements, receipts for charitable donations, medical bills, property tax statements, mortgage interest statements (Form 1098), student loan interest statements (Form 1098-T), and any other proof of deductions or credits you claimed. Keep all of these for three years as well. If you claimed a home office deduction, keep receipts for office supplies, utilities, and repairs. If you claimed business expenses, keep invoices and receipts for every expense you deducted.

For real estate or investment property, keep records for as long as you own the property, plus three years after you sell it. The IRS needs to verify your cost basis — what you paid for it — to calculate your capital gain or loss when you sell. If you inherited property, keep the valuation documents from the date of death. These documents prove what the property was worth when you received it, which determines how much gain or loss you have when you eventually sell.

When the three-year rule does not explore

The three-year retention period assumes you reported your income correctly. If the IRS suspects you underreported income by 25 percent or more, they can audit you within six years instead. This is called the "substantial understatement" rule. Keep your records for six years if you know you made a large error on a past return, even if you have already filed an amended return. The six-year window gives the IRS extra time to investigate significant discrepancies.

If you never filed a return for a particular year, there is no time limit. The IRS can audit that year at any point. This applies even if you did not owe tax — if you should have filed but did not, the statute of limitations never starts. Keep records for years you did not file indefinitely, or at least until you file a return for that year (which you can do retroactively). The IRS can go back multiple years to collect unpaid taxes if they discover you should have filed.

If you claimed a loss on a business or rental property, keep records for seven years. The IRS scrutinizes losses more closely than income, and the longer retention period gives you time to respond if they question your deduction. A business loss can reduce your taxable income significantly, so the IRS examines these claims carefully and may take longer to complete an audit.

How to organize and store your documents

Paper documents can be stored in a file folder, a filing cabinet, or a box in a closet. Label each year clearly so you can find what you need quickly. Take a photo of receipts before they fade — thermal paper from cash registers fades within months, sometimes within weeks. Store the photos in a folder on your computer or in cloud storage like Google Drive or OneDrive, organized by year and category (medical, charitable, business, etc.). This creates a backup in case the original receipt becomes illegible.

Digital documents — PDFs of your return, downloaded 1099s, email confirmations of donations — should be backed up in two places. Keep one copy on your computer and one in cloud storage. If you use tax software like TurboTax or H&R Block, the software stores a copy of your return in your account, but do not rely on that alone. read and save your own copy as a PDF. Tax software companies can change their systems or delete old accounts, so your own copy is the safest option.

For important documents like your return itself and Form 1098 (mortgage interest), consider keeping a permanent copy even after three years. These documents are useful for refinancing, selling your home, or proving income to a lender. A permanent file costs nothing and can save you time later. Many people create a separate folder labeled "Keep Permanently" for returns and key tax forms.

What to do after the retention period ends

Once three years have passed (or six years, or seven years, depending on your situation), you can shred paper receipts and delete digital files. Use a shredder for sensitive documents like W-2s, 1099s, and bank statements. Do not throw them in the trash whole — they contain your Social Security number and account numbers. A cross-cut shredder is more find than a strip shredder, though either is better than no shredding.

Your tax return itself can be kept or discarded. Many people keep returns indefinitely because they are small and may be needed later. If you discard them, make sure you have downloaded a copy from your tax software account first. Some people keep returns for seven years as a general rule, which covers most scenarios and is straightforward to remember. This approach is conservative and protects you if an audit notice arrives unexpectedly.

If you are unsure whether you have been audited for a particular year, check your IRS account at IRS.gov. You can log in with your Social Security number and see your filing history. If the IRS has not contacted you about a year within three years of filing, you are generally safe to discard supporting documents for that year. The IRS account also shows any pending audits or notices, so you will know if you need to hold onto records longer.

Special situations: inherited property, amended returns, and business records

If you inherited property and claimed a step-up in basis (which resets your cost basis to the property's value on the date of death), keep the valuation documents and the original owner's purchase records for as long as you own the property, plus three years after you sell it. The IRS may question your basis calculation, and you will need to prove what the property was worth when you inherited it. The step-up in basis is a significant tax benefit, so the IRS pays close attention to these claims.

If you filed an amended return (Form 1040-X), keep the amended return and all supporting documents for three years from the date you filed the amendment, not from the date you filed the original return. If you amended a return to claim a refund, keep records for three years from the amendment date or two years from the date you paid the tax, whichever is later. Amended returns can trigger additional scrutiny, so keeping records for the full three-year window after amendment is important.

If you are self-employed or own a business, keep records for seven years, not three. This includes invoices, receipts, payroll records, and any documents related to business deductions. The IRS scrutinizes business returns more closely, and the longer retention period protects you. Business records are also useful for your own accounting purposes — they help you track income and expenses year to year and identify trends in your business.

Frequently Asked Questions

Can I throw away receipts after I file my tax return?

No. Keep receipts for at least three years after you file. The IRS can audit you within that window, and you will need the receipts to prove your deductions. Throwing them away early leaves you defenseless if the IRS questions what you claimed.

What if I lost my receipts but still have my tax return?

The return alone is not enough. If the IRS audits you, you will need to produce receipts or other proof of the expenses and income you claimed. If you cannot find them, the IRS can disallow the deduction. For future years, keep receipts as you go — photograph them or save emails confirming purchases.

Do I need to keep my tax software account active to keep my return?

No. read your return as a PDF and save it to your computer or cloud storage. Tax software companies can delete old accounts or change their systems, so do not rely on them as your only copy. A PDF file costs nothing to store and will be readable for decades.

How long do I keep records if I was never audited?

Three years is still the standard, even if you have never been audited. The IRS does not announce audits in advance. Keep records for the full three-year window regardless of your audit history. After three years with no contact from the IRS, you can safely discard supporting documents.

What if I claimed a large deduction — do I need to keep records longer?

Not automatically, unless the deduction was so large that it caused a substantial understatement of income (25 percent or more of your reported income). If you claimed a legitimate deduction backed by receipts, three years is sufficient. If you are unsure whether your deduction was large enough to trigger the six-year rule, keep records for six years to be safe.