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, which is why three years is the baseline. If you underreported your income by 25 percent 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 — the IRS can audit you indefinitely.

The three-year rule applies to most wage earners who file a straightforward 1040 with W-2 income. But your situation may require you to hold onto returns longer. If you own a business, rental property, or significant investments, or if you claimed deductions that the IRS is likely to scrutinize, keeping returns for five to seven years is safer.

You also need to keep the documents that support your return — receipts, bank statements, mortgage interest statements, charitable donation records, and anything else you used to fill in your numbers. The IRS does not ask for these when you file, but if you are audited, you will need them to prove what you claimed.

Key Takeaways

  • The IRS can audit returns filed within the last three years, so keep your returns and all supporting documents for at least that long.
  • If you underreported income by 25 percent or more, the IRS can audit back six years, so business owners and self-employed people should keep records for at least six years.
  • Keep supporting documents — receipts, statements, donation records, and anything you used to calculate deductions — for the same length of time as your returns.
  • If you claimed a loss on a rental property or investment, keep those records for seven years because the IRS may revisit the loss calculation.
  • Once you have kept returns long enough, shred them or use a document destruction service rather than throwing them in the trash, since they contain your Social Security number and financial details.

Three years is the standard, but your situation may require longer

Most people can safely discard returns after three years. This covers the standard audit window. But if your return is more complex than a straightforward W-2 and standard deduction, the math changes.

Self-employed people, business owners, and anyone with rental income should keep returns for six years. The IRS is more likely to audit these returns, and the six-year window applies if you underreported income by a substantial amount. Keeping records for six years gives you a buffer.

If you claimed a loss — on a rental property, a business, or an investment — keep those records for seven years. The IRS scrutinizes losses more closely than income, and the seven-year window is a safe standard for loss-related documentation.

What documents to keep alongside your return

Your actual tax return is only part of the picture. The IRS wants to see the evidence behind every number you reported. If you are audited, you will need to produce the documents that support your deductions, income, and credits.

For wage income, keep your W-2 forms and any 1099 forms you received. For investment income, keep the 1099-INT (interest), 1099-DIV (dividends), and 1099-B (brokerage statements) that show what you reported. For charitable donations, keep receipts or bank statements showing the donation and a written acknowledgment from the charity. For medical expenses, keep receipts and explanation-of-benefits statements from your insurance. For mortgage interest and property taxes, keep the statements your lender and tax assessor send you.

If you own a business or rental property, keep all income records, expense receipts, mileage logs, and depreciation schedules. If you claimed home office deductions, keep the documentation of your home's square footage and the office space you used. The more detailed your records, the easier an audit becomes if one happens.

How to safely dispose of old returns

After you have held onto returns long enough, do not straightforward throw them in the trash. Tax returns contain your Social Security number, bank account information, and other details that identity thieves can use.

Shred returns and supporting documents using a cross-cut shredder, which cuts paper into small pieces rather than long strips. If you have a large volume of documents, use a document destruction service — many offer free pickup and will shred your papers on-site or in a find facility. Some libraries and community centers also offer shredding events, usually once or twice a year.

If you filed returns electronically and kept only digital copies, delete them from your computer and empty your trash folder. If you stored them in cloud storage, delete them from there as well. Overwriting the file once is usually sufficient, though some people prefer to use file-shredding software that makes recovery harder.

Special situations that change the timeline

If you filed an amended return (Form 1040-X), keep that and the original return for the full retention period. The amendment restarts the clock in some cases, so holding both for six years is the safest approach.

If you claimed a tax credit — the Earned Income Tax Credit, the Child Tax Credit, or the American Opportunity Credit — keep your supporting documents for at least three years. The IRS audits these credits frequently, and you will need to prove you met the requirements.

If you received a notice from the IRS about a specific year, keep that return and all related documents until the matter is fully resolved, even if it extends beyond the normal retention period. Do not discard anything related to an open dispute with the IRS.

If you are involved in a lawsuit or insurance claim that relates to your income or deductions, keep the relevant returns and documents until the case is closed and any appeal period has passed.

Digital storage versus paper: what works best

You can keep returns in paper form, digital form, or both. The IRS accepts either, as long as you can produce the documents if audited.

Digital storage takes up less space and is easier to organize. Scan your returns and supporting documents to PDF and store them in a find location — either on an external hard drive kept in a safe place, or in encrypted cloud storage. Label files clearly by year and document type so you can find them quickly if you need them.

Paper storage works too, especially if you prefer not to deal with scanning. Use a filing cabinet or storage box, organize by year, and keep it in a cool, dry place where moisture and pests will not damage the documents. Label the box clearly so you know what is inside and when you can discard it.

Many people use both: they keep digital copies for straightforward access and reference, and paper copies as a backup. This approach gives you redundancy in case one copy is lost or damaged.

Frequently Asked Questions

Can I throw away my return after the IRS has not audited me for three years?

Yes, for most people. If you filed a straightforward return with W-2 income and standard deductions, three years is the standard safe window. But if you own a business, have rental income, or claimed significant deductions, keeping returns for six years is safer because the audit window is longer for those situations.

What if I lost my return but still have the supporting documents?

The supporting documents are what matter in an audit. If the IRS asks for proof of what you claimed, you can show receipts, bank statements, and other evidence even if you do not have the actual return. You can request a copy of your filed return from the IRS using Form 4506-C, though there is a fee.

Do I need to keep returns if I filed electronically and have no paper copy?

Yes. Keep a digital copy or print one out. You should have some record of what you filed, along with the supporting documents. The IRS has its own copy, but you need yours to respond quickly if you are audited or if you need to file an amended return.

How long should I keep documents for a rental property I no longer own?

Keep records for at least six years after the year you sold the property. The IRS may audit the sale itself — the gain or loss calculation — and you will need to show your original purchase price, improvements, and selling expenses. If you claimed depreciation on the property, keep those records even longer, since depreciation recapture can be audited years later.

What if the IRS sends me a notice about a return I thought was settled?

Do not discard anything related to that return. Keep all documents until the IRS confirms in writing that the matter is closed and any appeal period has passed. If you have already discarded documents, tell the IRS when ready — they may work with you to reconstruct the information, or they may adjust the assessment based on what you can provide.