---
title: How Many Years Back Do I Need to File? 2026 Guide | TaxTruce
url: https://taxtruce.com/answers/how-many-years-back-do-i-need-to-file
updated: 2026-10-29
---

# How many years back do I need to file?

Updated October 8, 20263 sourcesTaxTruce team[Fact checked](/editorial-standards)

The short answer

The IRS says file all tax returns that are due. In practice, IRS audits usually go back no more than 6 years, and refunds can only be claimed for about 3. A tax pro can check your case. Get your wage and income records with Form 4506-T or Get Transcript.

## Sources

1. [IRS: Filing past due tax returns](https://www.irs.gov/businesses/small-businesses-self-employed/filing-past-due-tax-returns)
2. [IRS: IRS audits](https://www.irs.gov/businesses/small-businesses-self-employed/irs-audits)
3. [IRS: Get transcript](https://www.irs.gov/individuals/get-transcript)

Run the numbers with our [free tax tools](/tools), like the penalty and payment plan math.