How Long Should You Keep Tax Records? A Practical Retention Guide

Tax record retention is a balance between audit defense and clutter. Keep too little and you cannot substantiate a deduction if questioned; keep too much and you drown in paper you will never use. A simple, consistent system resolves both problems.

The general IRS rule is to keep records for three years from the date you filed the return. This matches the standard assessment window during which the IRS can audit a return and you can amend one.

There are important exceptions. If you understate your income by more than 25%, the IRS has six years to assess. If you file a fraudulent return or do not file at all, there is no statute of limitations — keep those records indefinitely.

For assets you still own — real estate, investments, business equipment — keep the purchase records until you dispose of the asset plus the standard retention period. You need the cost basis to calculate gain or loss when you sell, and reconstructing it years later is often impossible.

Employment tax records should be kept for four years. Records related to retirement accounts, especially nondeductible contributions and conversions, should be kept until the account is fully withdrawn, since the tax basis may need to be proven decades later.

A practical system: keep digital copies of tax returns and supporting documents permanently, keep the current year and prior three years of source documents (receipts, 1099s, statements) readily accessible, and archive older records in a single clearly labeled folder.

The goal is not to keep everything forever — it is to keep what you would need to defend a return, and to be able to find it quickly if asked. A labeled, dated system beats a shoebox every time.