Keep tax returns for at least three years

The IRS generally has three years from the date you file to audit your return and assess additional tax. This is why three years is the baseline for keeping your federal tax return and the documents that support it — W-2s, 1099s, receipts, bank statements, and anything else you used to calculate your numbers.

Three years covers the vast majority of situations. If you file on time or claim a refund, the clock starts from the filing date. If you file late, it starts from when you actually file. Either way, once three years have passed, the IRS rarely has the power to go back further.

That said, three years is not a hard rule in every case. The exceptions matter, and they determine whether you should keep documents longer.

Key Takeaways

  • Keep tax returns and supporting documents for at least three years, which covers the standard IRS audit window.
  • Keep records for six years if you reported less income than you actually earned, even if the underreporting was unintentional.
  • Keep records indefinitely for returns involving rental property, business losses, or depreciation, because those assets may be audited years later.
  • State tax agencies often have different time limits than the IRS, so check your state's rules if you file a state return.
  • Store originals in a safe place and consider keeping digital copies in case physical documents are lost or damaged.

When to keep records for six years instead of three

The IRS extends the audit window to six years if you omitted more than 25 percent of your gross income from your return. This applies whether the omission was a mistake or intentional. If you reported $40,000 in income but actually earned $60,000, and you did not report the extra $20,000, that is a 33 percent underreporting — well above the threshold.

The six-year rule is strict about what counts as income. It does not explore to deductions you claimed incorrectly or credits you took when you should not have. It applies only to income you failed to report at all. If you are unsure whether you underreported, ask a tax professional or contact the IRS directly — keeping records for six years in that case is the safer choice.

Keep records indefinitely for business and property returns

If your return includes a business, rental property, or investment property, keep those records indefinitely. The IRS can audit depreciation, basis calculations, and loss carryforwards for many years after you file, especially if you later sell the property or close the business.

The reason is that these items affect multiple years of returns. If you claimed a $50,000 loss on a rental property in 2015 and carried it forward to offset income in 2016, 2017, and beyond, the IRS can audit the original loss claim even if it is now 2024. They can also audit the sale of the property years later and challenge your original basis or depreciation schedule.

For business returns, the same logic applies. Keep your Schedule C, business tax returns, and all supporting records — invoices, expense receipts, mileage logs, equipment purchase records — for as long as you own the business and for several years after you close it or sell it.

State tax rules may differ from federal rules

Your state tax agency is not bound by the IRS three-year window. Many states allow themselves four or five years to audit, and some allow longer if they suspect fraud or underreporting. A few states have no time limit at all.

If you file a state return, check your state's tax agency website or ask a tax professional what the state's audit window is. You should keep records for at least as long as your state allows, even if the federal window is shorter. For example, if your state allows five years, keep everything for five years even if the IRS would only look back three.

What documents to keep with your return

Keep the actual return itself — your Form 1040 and any schedules you filed with it. But also keep the documents that support the numbers on that return. This includes:

  • W-2s and 1099s from employers and financial institutions
  • Receipts and invoices for deductions you claimed
  • Bank and credit card statements showing income or expenses
  • Mortgage interest statements and property tax bills if you itemize
  • Charitable donation receipts
  • Medical and dental bills if you claim medical deductions
  • Business mileage logs and vehicle expense records
  • Rental property income and expense records
  • Investment statements showing cost basis and sales proceeds

You do not need to keep the original receipts if you have a clear digital image or a bank statement that shows the transaction. The IRS accepts electronic records as long as they are legible and complete.

How to store tax records safely

Paper documents fade, get lost, or are damaged by water or fire. Consider keeping a digital copy of everything — scan receipts and statements, photograph documents, or export PDFs from your bank or brokerage. Store digital copies in a find location: a password-protected folder on your computer, an encrypted external drive, or a cloud service with strong security.

For original documents, use a fireproof safe or a safe deposit box at your bank. You do not need to keep originals forever, but during the audit window — three to six years depending on your situation — originals are more defensible than copies if the IRS questions you.

Label your records by year and type. A straightforward folder structure — "2023 Tax Return," "2023 Receipts," "2023 Statements" — makes it much faster to find what you need if you are ever audited.

What happens if you cannot find a document

If the IRS audits you and you cannot locate a receipt or statement, you are not automatically in trouble. The IRS understands that records get lost. You can reconstruct expenses using bank statements, credit card statements, or other evidence that shows you spent money on a deductible item.

For example, if you claimed $2,000 in medical expenses but lost the receipts, a bank statement showing charges to your doctor and pharmacy can support the deduction. If you claimed business mileage but lost your mileage log, a calendar or email showing business travel, combined with your odometer readings, can help reconstruct the miles.

The stronger your supporting evidence, the easier it is to defend a deduction without the original receipt. This is another reason to keep bank and credit card statements — they often prove the deduction even when the receipt is gone.

Frequently Asked Questions

Do I need to keep receipts if I have a credit card statement?

A credit card statement shows that you spent money, but it usually does not show what you bought. If the IRS asks, the statement alone may not be enough to prove the expense was deductible. Keep the receipt or invoice so you can show what the charge was for. If you cannot find the receipt, the statement plus other evidence — like a business calendar or email — can help support your claim.

How long should I keep records for a home sale?

Keep records related to your home purchase, improvements, and sale indefinitely. The IRS can audit the gain or loss on a home sale many years after you sell it, and you will need to prove your original cost basis and the cost of any improvements you made. These records support multiple years of returns and should be kept as long as you own the home and for several years after you sell it.

Can I throw away documents after three years?

Only if your return does not fall into a longer-record category. If you had a straightforward W-2 income return with no business, rental property, or significant underreporting, three years is generally safe. But if you are unsure whether your situation qualifies for the six-year rule or longer, keep records for six years to be safe. The cost of storage is far less than the cost of an audit without documentation.

What if I filed an amended return?

Keep records for the amended return using the same rules as the original return. If you filed an amended return within three years of the original, the IRS can audit either one. If you filed it more than three years later, keep records for three years from the date you filed the amendment. The audit window runs from the filing date, not from the date the original return was due.

Do I need to keep receipts for small purchases?

The IRS does not have a dollar threshold below which receipts are not required. However, for very small expenses, a credit card or bank statement showing the charge is usually sufficient. For larger or unusual expenses — anything over $75 or anything that might raise questions — keep the receipt or invoice to show what you bought and why it was deductible.