Keep tax returns for at least three years, and longer if you have business income or significant deductions
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 every receipt, statement, and document you used to prepare it, for a minimum of three years from the date you filed.
But three years is not always enough. If you underreported your income by 25 percent or more, the IRS has six years to audit you. If you did not file a return at all, there is no time limit. If you own a business, have rental property, or claim significant deductions like home office or charitable donations, you should keep records longer than three years because the IRS scrutinizes those areas more closely.
The documents you need to keep are not just your 1040 form. They are the W-2s, 1099s, receipts, invoices, bank statements, mortgage interest statements, property tax bills, medical bills, and any other paper or digital file that proves the numbers on your return are correct.
Key Takeaways
- Keep your filed tax return and all supporting documents for at least three years from the date you filed, because that is how long the IRS has to audit most returns.
- If you underreported income by 25 percent or more, or if you own a business or rental property, keep records for six years or longer.
- Supporting documents include W-2s, 1099s, receipts, bank statements, mortgage statements, and anything else that proves the numbers on your return.
- After the retention period ends, you can shred paper documents or delete digital files, but keep a copy of the actual tax return itself indefinitely.
What counts as a supporting document
A supporting document is anything that backs up a number on your return. If you claimed $5,000 in charitable donations, you need receipts or written acknowledgments from the charities. If you deducted $3,000 in business expenses, you need invoices, receipts, or credit card statements showing what you bought and when. If you reported $50,000 in W-2 income, you need the W-2 itself.
The IRS does not ask you to send these documents when you file. But if you are audited, the auditor will ask for them. If you cannot produce them, the IRS will disallow the deduction or income adjustment, and you will owe back taxes plus interest and penalties.
Common documents to keep include: W-2 forms from employers, 1099 forms (interest, dividends, freelance income), receipts for deductible expenses, invoices and contracts for business income, mortgage statements showing interest paid, property tax bills, medical and dental bills, charitable donation receipts, vehicle registration and insurance for business use, home improvement receipts if you claim home office deductions, and bank and investment statements.
The three-year rule for most taxpayers
For most people, three years is the magic number. The IRS has three years from the date you file your return to open an audit. If three years pass without an audit notice, the IRS generally cannot go back and challenge that return.
This applies whether you file on April 15 or October 15 (if you got an extension). The clock starts from the date you actually filed, not from the tax year itself. If you file your 2023 return on March 10, 2024, the three-year window closes on March 10, 2027.
After three years have passed, you can discard the supporting documents. You can shred paper receipts, delete digital files, and clear out the folder. But keep the actual tax return form itself—the 1040 and any schedules you filed—indefinitely. It is a record of what you reported, and you may need it later for a mortgage process, a loan, or to prove your income history.
When to keep records for six years or longer
The IRS extends the audit window to six years if you underreported your income by 25 percent or more. This is a significant threshold. If your actual income was $100,000 but you reported only $75,000, you have crossed it. Keep all supporting documents for six years in this case.
If you own a business, keep business records for at least six years. The IRS scrutinizes business returns more closely than W-2 income, and business deductions are a common audit trigger. The same applies if you own rental property: keep records related to the rental for six years.
If you claim a home office deduction, keep documentation of your home office expenses and the square footage calculation for six years. If you claim significant charitable donations, keep receipts for six years. If you have investment income and claim losses to offset gains, keep brokerage statements and trade confirmations for six years.
If you did not file a return at all, there is no statute of limitations. The IRS can go back as far as it wants. If you are in this situation, consult a tax professional before filing a late return, because the rules around back filing are complex.
Digital storage versus paper: what works best
You can keep records in any form: paper, digital files, photographs, or a combination. The IRS accepts digital copies as long as they are legible and complete. A photograph of a receipt is fine. A scanned PDF is fine. A spreadsheet with expense data is fine, as long as you also keep the original receipts that back it up.
Digital storage has advantages. It takes up no physical space, is harder to lose to fire or water damage if you use cloud backup, and is easier to organize and search. You can use a filing system on your computer, a cloud service like Google Drive or Dropbox, or specialized tax software that stores documents.
Paper has one advantage: it is not dependent on a company staying in business or a service remaining available. If you keep paper receipts in a filing cabinet, you do not have to worry about a cloud service shutting down or changing its terms. Many people keep both: they scan important documents and store the digital copies in the cloud, and keep the originals in a folder for three to six years, then discard them.
What to do after the retention period ends
Once three years (or six years, if applicable) have passed, you can safely discard the supporting documents. Shred paper receipts and statements to protect your privacy. Delete digital files or clear them from your cloud storage. You do not need to keep them any longer.
The one exception is the tax return itself. Keep a copy of every tax return you have filed, indefinitely. It is a summary of your reported income and deductions, and you may need it to prove your income history for a loan, a job process, or a government program. It takes almost no space to store digitally, and it costs nothing to keep.
If you are unsure whether you have been audited for a particular year, check your IRS account online at IRS.gov. You can see your filing history and any notices the IRS has sent you. If you see an audit notice, do not discard documents for that year until the audit is closed and the statute of limitations has run.
When to ask a professional for help
If you own a business, have rental property, or have a complex tax situation with multiple income sources and significant deductions, consider working with a tax professional or accountant. They can advise you on what documents to keep and for how long, based on your specific situation. They may also recommend keeping records longer than the IRS minimum if there is a reason to expect scrutiny.
If you are facing an audit, do not discard any documents. Contact a tax professional or the IRS directly. The IRS has a free helpline at 1-800-829-1040, and they can tell you what documents you need for your specific audit.
Frequently Asked Questions
Do I need to keep receipts if I use tax software?
Yes. Tax software helps you organize and file your return, but it does not replace the original documents. The IRS wants to see the receipts, invoices, and statements that prove your numbers are correct. Keep the documents even if the software stores a copy of your return.
What if I lost some receipts from a year I was audited?
Tell the IRS auditor when ready. You can reconstruct some expenses using bank or credit card statements. The IRS may allow you to use bank records as proof of payment if the original receipt is lost. Do not claim you have a receipt if you do not—the auditor will ask to see it, and lying to the IRS has serious consequences.
Can I throw away documents after I file my return?
No. Wait at least three years after you file. The IRS has that long to audit you, and if they do, you will need the documents to prove your deductions and income. Discarding them early puts you at risk if an audit happens.
Do I need to keep W-2s and 1099s forever?
Keep them for at least three years. After that, you can discard them if you have not been audited. But keep a copy of your actual tax return forever, because it shows your reported income history and you may need it for loans or other purposes.
What if the IRS asks for documents I no longer have?
Tell them you no longer have them and explain why. You can use bank statements, credit card statements, or other records to reconstruct the expense. The IRS may disallow the deduction if you cannot provide proof, but they cannot penalize you for losing documents after a reasonable retention period has passed.