Keep tax returns for at least three years, and longer if you have business income, rental property, or investments

The Internal Revenue Service (IRS) can audit your return up to three years after you file it. That is the baseline: keep your tax return itself, plus the documents you used to prepare it (W-2s, 1099s, receipts, bank statements, anything that supports the numbers you reported), for a minimum of three years from the date you filed.

But three years is not always enough. If you underreport income by more than 25 percent, the IRS has six years to audit you. If you file a fraudulent return or do not file at all, there is no time limit. And if you claim a loss on a business or rental property, you may need records for longer than three years because the IRS can challenge depreciation deductions and loss carryforwards years later.

The safest approach: keep returns and supporting documents for seven years. That covers the six-year window for substantial underreporting, plus a buffer. For business owners and landlords, keep records for at least seven years, and consider keeping them indefinitely for any year in which you claimed a loss.

Key Takeaways

  • The IRS can audit your return for three years after you file, so keep your return and all supporting documents (W-2s, 1099s, receipts, statements) for at least three years.
  • If you underreport income by 25 percent or more, the IRS has six years to audit you, so keep records for at least six years in those cases.
  • Business owners and landlords should keep records for seven years or longer because depreciation deductions and loss carryforwards can be challenged years after you file.
  • There is no time limit if you file a fraudulent return or do not file at all, so do not destroy records if you know a return is incorrect.

What documents to save with your tax return

Saving the return itself is not enough. You need the documents that prove the numbers on it. The IRS does not ask for these when you file, but if you are audited, you must produce them.

For wage income, keep your W-2s and any pay stubs from the year you filed. For investment income, keep 1099-DIV (dividends), 1099-INT (interest), and 1099-B (brokerage sales) statements. For self-employment or business income, keep invoices, receipts, bank statements, and a record of mileage if you claimed vehicle deductions. For rental property, keep mortgage statements, property tax bills, insurance invoices, repair receipts, and depreciation schedules. For charitable donations, keep receipts or written acknowledgment from the charity. For medical expenses, keep receipts and explanation-of-benefits statements from your insurance.

Store these documents in a folder or file box labeled by year. Digital copies are acceptable — photograph receipts or scan them to a computer or cloud storage. The IRS does not require original paper documents, though having them is safer if you are audited.

When six years is the minimum instead of three

The IRS uses a rule called the substantial underreporting standard. If you report less than 75 percent of your actual income on your return, the IRS has six years instead of three to audit you. This applies to income you should have reported but did not — not to deductions you claimed.

Example: You earned $100,000 but reported only $70,000 on your return. That is a 30 percent underreporting, which exceeds the 25 percent threshold. The IRS can audit you for six years. In this case, keep your records for at least six years.

If you are unsure whether you underreported, err on the side of keeping records longer. Six years is a reasonable standard for anyone with multiple income sources or complex deductions.

Business owners and landlords need longer retention

If you own a business or rental property, the rules are different. You can claim depreciation on buildings, equipment, and improvements, and you can carry forward losses to future years. The IRS can challenge these deductions years after you file the return in which you first claimed them.

Keep business and rental records for at least seven years. If you claimed a loss in a particular year, keep those records indefinitely — or at minimum for as long as you own the property or business. The same applies if you claimed a large depreciation deduction; the IRS may audit the basis of your property years later.

For a rental property you sold, keep records for seven years after the sale. The IRS can challenge your cost basis and depreciation recapture calculations long after the transaction closes.

What to do if you filed an incorrect return

If you discover you made a mistake on a return you already filed, do not destroy the records. The IRS may contact you, and you will need documentation to explain what happened.

You can file an amended return using Form 1040-X within three years of the original filing date (or two years after you paid the tax, whichever is later). Keep the amended return and all supporting documents for the same retention period as the original return — at least three years, or longer if the error involved underreported income or business deductions.

If you intentionally underreported income or claimed false deductions, destroying records will not protect you. The IRS has no time limit to pursue fraud cases, and destroying records can itself be a crime. Keep all records related to any return you know is incorrect.

Digital storage and backup

You do not need to keep paper copies. Photograph receipts with your phone, scan documents to your computer, or use cloud storage like Google Drive, Dropbox, or OneDrive. Make sure you can retrieve the files years later — do not rely on a single device or account that you might lose access to.

Create a folder structure by year and document type (W-2s, 1099s, receipts, statements). Back up your files to at least two locations — your computer and a cloud service, for example. If you use tax software like TurboTax or H&R Block, those platforms often store your return and some supporting documents, but do not assume they will be available in seven years. Download and save your own copies.

Keep a list of where you stored each year's documents. When tax time comes around next year, you will want to know where to find last year's return and records.

Frequently Asked Questions

Can I throw away my tax return after three years?

Only if you have no business income, rental property, or investments, and you reported your income accurately. If any of those apply, keep records for at least six to seven years. If you are unsure, keeping them for seven years is the safer choice and costs almost nothing in storage space.

Do I need to keep the original paper return, or is a copy okay?

A copy is fine. The IRS does not require originals. Digital copies (photographs or scans) are acceptable. What matters is that you can produce the supporting documents (W-2s, receipts, statements) if you are audited, not the return itself.

What if I filed electronically — do I still need to save documents?

Yes. Filing electronically does not change what you need to keep. You still need the documents that support the numbers on your return: W-2s, 1099s, receipts, bank statements, and anything else you used to calculate your income and deductions.

How long should I keep records for a business I sold?

Keep business records for at least seven years after you close the business. If you claimed depreciation on assets or carried forward losses, keep those records indefinitely. The IRS can challenge your cost basis and depreciation calculations years after you sell.

What if the IRS contacts me about a return from five years ago?

Produce the documents you have. If you no longer have them, tell the IRS that. You are not required to have kept them past three years (or six years if you underreported income), but if you did keep them, they are your best defense. If you do not have records, the IRS may disallow deductions or adjust your income based on what they can verify from other sources.