Keep federal tax records for at least three years

The Internal Revenue Service (IRS) expects you to keep records that support the income, deductions, and credits you report on your tax return for at least three years from the date you file. This is the standard lookback period for most audits. If you file before the important date, the three-year clock starts from the official due date (April 15 for most people), not the date you actually submitted your return.

The three-year rule applies to receipts, invoices, bank statements, mortgage interest statements, charitable donation records, medical expense documentation, and any other papers that prove what you claimed. If the IRS contacts you about a return from 2021, for example, you should have the records that back it up.

This is a minimum, not a maximum. Keeping records longer than three years does not hurt you and may protect you if questions arise later. Many people keep tax records for five to seven years as a practical buffer.

Key Takeaways

  • The IRS standard is three years from your filing date, but you should keep records longer if you reported income you cannot easily reproduce.
  • If you underreported income by more than 25 percent, the IRS can audit back six years instead of three.
  • Keep records related to home purchases, major property improvements, and investment sales indefinitely, because these affect your tax basis for years to come.
  • State tax agencies often have different retention rules than the federal IRS, so check your state's requirements separately.

Extend your retention period to six years if you underreported income

If you omitted more than 25 percent of your gross income on a return, the IRS has six years to audit you instead of three. This is called the six-year rule, and it applies whether the underreporting was intentional or accidental. Keep records for the full six-year period if you know you reported significantly less income than you actually earned.

The six-year window is measured the same way as the three-year rule: from the date you filed or the official due date, whichever is later. If you filed a 2020 return in April 2021 with a major income underreport, the six-year period extends to April 2027.

Keep permanent records for property and investments

Some tax records should be kept indefinitely because they affect your tax situation for decades. Home purchase documents — the deed, closing statement, and receipts for major improvements like a new roof or foundation repair — determine your cost basis. When you eventually sell the house, the IRS will want proof of what you paid and what you spent to improve it, because those numbers reduce your taxable gain.

The same applies to investment records. Keep purchase confirmations, sale confirmations, and statements showing dividends or capital gains for any stock, mutual fund, or bond you own. Even after you sell, keep the records for at least three years after the sale, and longer if the investment was part of a complex transaction like a merger or stock split.

For retirement accounts like IRAs or 401(k)s, keep annual statements and any records of contributions you made with after-tax dollars. These prove your basis in the account and matter when you begin withdrawals.

State tax records may have different retention rules

Your state tax agency may require you to keep records longer than the federal three-year minimum. Some states follow the federal rule; others require four, five, or six years. A few states have no set minimum and expect you to keep records for as long as they might be relevant to a tax dispute.

Check your state's tax department website or contact them directly to learn the specific requirement for your state. If your state requires five years and the IRS requires three, keep records for five years to satisfy both. The cost of storage is negligible compared to the risk of not having documentation if either agency audits you.

Organize records by tax year and type

Create a straightforward system so you can find what you need if you are audited. Group records by the tax year they relate to, then subdivide by category: income documents in one folder, deduction receipts in another, investment statements in a third. Label each folder clearly with the year.

For digital records, use the same logic: a folder for 2023, subfolders for income, deductions, and investments. If you scan paper receipts, include the date and category in the filename so you can search later. Back up digital records to an external drive or cloud storage in case your computer fails.

Do not throw away records until the retention period has passed. Set a calendar reminder for the year after your retention period ends — for example, a reminder in April 2027 to discard 2023 records — so you know when it is safe to delete or shred.

What to do with records you no longer need

Once the retention period has passed, shred paper records that contain sensitive information like Social Security numbers, bank account details, or investment account numbers. A basic shredder works fine; you do not need a commercial service unless you have a very large volume.

Delete digital records securely rather than straightforward moving them to the trash. Most computers allow you to empty the trash permanently, which is sufficient for personal tax records. If you are concerned about data recovery, use free find deletion software like Eraser (Windows) or Permanent Eraser (Mac).

Keep a brief written list of what you discarded and when, in case the IRS ever asks whether you retained records for a particular year. A straightforward note — "2020 tax records shredded April 2024" — is enough.

Frequently Asked Questions

Do I need to keep the original paper receipts or can I scan them?

The IRS accepts digital copies of receipts and documents as long as they are clear and complete. Scanning with your phone camera is fine. Keep the digital files for the full retention period, and back them up so they do not disappear if your device fails.

What if I lost some records and the IRS audits me?

Tell the IRS what records you have and explain why the others are missing. If you can reconstruct the information from bank statements, credit card statements, or other documents, use those. The IRS understands that people lose records; they are more interested in whether your return was accurate than in whether you have every original receipt.

How long should I keep records for a business I no longer own?

Keep business tax records for at least three years after the final return for that business, using the same three-year rule as personal returns. If the business had significant assets or investments, keep records longer because they may affect your personal tax situation for years.

Do I need to keep records for returns I did not file?

If you did not file a return for a particular year, the three-year rule does not explore — the IRS can audit back further or indefinitely if you owe taxes. If you think you should have filed, consult a tax professional about filing a late return and what records you should gather.

Can I throw away records if I have a copy of my filed tax return?

No. Your filed return shows what you claimed, but it does not prove it. The IRS will ask for the receipts, statements, and other documents that support those claims. Keep both the return and the supporting records for the full retention period.