Keep federal tax returns for at least three years

The Internal Revenue Service can audit your return up to three years after you file, so you should keep your federal tax return and supporting documents for at least that long. This is the standard window. If you underreported your income by 25 percent or more, the IRS can go back six years. If you did not file a return at all, there is no time limit — the agency can pursue back taxes indefinitely.

Three years is the minimum, not the ideal. Many tax professionals recommend keeping returns for seven years because some deductions — particularly those tied to home improvements, rental property, or business assets — can affect your taxes in later years. If you claim a loss and carry it forward to reduce taxes in a future year, you need the original return to prove where that loss came from.

Key Takeaways

  • Keep federal returns and all supporting documents for at least three years, since that is the standard IRS audit window.
  • If you reported income significantly below what the IRS has on record, keep records for six years instead.
  • Keep returns longer if they involve deductions tied to assets you still own, such as a home or rental property.
  • State tax returns often have different retention rules — check your state's requirements, as some require longer storage than federal rules.
  • Organize documents by year and store them in a dry place, whether in a file box or a scanned digital folder.

What documents to store alongside your return

Your tax return itself is only part of the picture. Store the documents that support what you reported: W-2 forms from employers, 1099 forms for freelance or investment income, receipts for deductions you claimed, mortgage interest statements, charitable donation records, and medical expense documentation. If you own a business, keep invoices, expense receipts, and mileage logs. If you sold property, keep the purchase agreement and records of improvements you made.

The IRS does not require you to send these documents with your return, but if you are audited, you will need them to prove your numbers are correct. Without receipts or statements, the IRS can disallow deductions entirely. A cancelled check or credit card statement showing a charitable donation is far stronger than your word alone.

State tax return storage rules vary

Your state may have different retention requirements than the federal government. Some states follow the three-year federal rule; others require four or five years. A few states have no statute of limitations for certain types of returns. Before you throw away a return, check your state's tax agency website or call their helpline to confirm how long that state requires you to keep records.

If you have moved to a different state since filing, you may need to keep returns from your previous state longer. Some states pursue back taxes more aggressively than others, and the rules can change. Keeping returns for seven years covers you across most state and federal scenarios without requiring you to track different important date for each state.

Digital storage versus paper: what works

You can store returns on your computer, in cloud storage, or in a filing cabinet — the IRS does not care which format you use. Digital storage takes up less physical space and is easier to search. Scan your returns and supporting documents into a folder organized by year, and keep a backup copy on an external drive or in cloud storage in case your computer fails.

If you keep paper copies, store them in a dry place away from direct sunlight and moisture. A filing cabinet in a closet or basement works. Avoid the attic if your area has temperature swings or humidity problems — paper deteriorates faster in those conditions. Label each folder clearly with the tax year so you can find what you need quickly if the IRS contacts you.

When you can safely discard old returns

Once you have held a return for the required time — typically seven years to be safe — you can shred or delete it. Before you do, check whether you still need it for any ongoing purpose. If you claimed a home office deduction and still work from home, or if you are depreciating business equipment you still own, keep that return longer. If you sold a rental property and are still reporting the gain or loss over multiple years, keep the original purchase and sale documents.

For returns older than seven years with no ongoing tax implications, shredding is safe. If you are discarding paper, use a shredder rather than throwing returns in the trash — they contain your Social Security number and other sensitive information. For digital files, delete them from your computer and empty the recycle bin.

What to do if you cannot find an old return

If the IRS asks for a return you no longer have, you can request a transcript from the agency. The IRS keeps records of what you reported for the past ten years. A transcript shows your filing status, income, deductions, and tax paid — enough information to reconstruct what happened that year or to respond to an audit notice. You can order a transcript online through IRS.gov, by phone at 800-829-1040, or by mail using Form 4506-C.

If you need the actual return document itself — not just a transcript — you can request it using Form 4506. This takes longer and may have a small fee, but it gives you a copy of what you originally filed. Keep this in mind if you are considering discarding returns: once they are gone, retrieving them takes time and effort.

Frequently Asked Questions

How long should I keep tax returns if I own a home?

Keep returns for at least seven years if you claimed a home office deduction or made improvements you depreciated. Keep them indefinitely if you still own the home and may need to prove your cost basis when you eventually sell. Once you sell and the sale is final, you can discard the return after seven years.

Do I need to keep the original return, or is a copy good enough?

A copy is fine for your own records. The IRS has the original on file. If you are audited, you need the supporting documents — receipts, statements, invoices — more than you need the return itself. A transcript from the IRS can substitute for the return if you cannot find yours.

What if I filed an amended return?

Keep both the original return and the amended return for at least three years from the date you filed the amendment. The IRS can audit either one. The same seven-year rule applies if the amendment involved deductions tied to assets you still own.

Can I throw away my W-2s and 1099s after I file my return?

Keep them for at least three years alongside your return. If you are audited, the IRS will want to see the actual forms to verify your income. After three years, you can discard them unless they relate to ongoing deductions or assets.

Is there a penalty for not keeping records?

The IRS does not fine you for discarding old records after the required time has passed. However, if you are audited and cannot produce supporting documents, the IRS can disallow deductions or assess additional tax based on their own calculations. Keeping records protects you in that scenario.