---
title: Is There a Statute of Limitations on Unfiled Returns?
url: https://taxtruce.com/answers/statute-of-limitations-on-unfiled-returns
updated: 2026-10-29
---

# Is there a statute of limitations on unfiled returns?

Updated October 8, 20262 sourcesTaxTruce team[Fact checked](/editorial-standards)

The short answer

The 10 year collection clock starts when a tax is assessed. If you never filed, there may be no assessment yet, so the clock may not have started for that year. The IRS can file a substitute return, which leads to an assessment.

Refunds have their own limit: claim them within 3 years of the due date.

## Words to know

[Assessment](/glossary)
:   When the IRS records a tax you owe on its books. The 10 year collection clock starts here.

## Sources

1. [IRS Internal Revenue Manual 5.1.19: Collection statute expiration](https://www.irs.gov/irm/part5/irm_05-001-019)
2. [IRS: Filing past due tax returns](https://www.irs.gov/businesses/small-businesses-self-employed/filing-past-due-tax-returns)

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