What’s the best order to file missing tax returns in 2025?

Plan how to catch up on missing tax returns for 2025 or 2026 by listing unfiled years, refund eligibility, and notices. The tool prioritizes years with expiring refunds and urgent IRS notices, helping you sequence filings and gather required records efficiently.

No login required.

How this calculation works

  • Ranks missing years by refund expiration and notice urgency.
  • Highlights years most likely to require immediate action.
  • Summarizes a filing sequence and document checklist.

Common mistakes and caveats

  • Refund claims typically expire after three years.
  • IRS notices and state requirements can change priorities.
  • This tool does not create or file returns.

FAQ

How many years does the IRS usually require?

In many cases the IRS asks for the most recent six years, but requirements vary by case.

Last updated & sources

Last updated January 27, 2026.

TaxGuide Pro provides free state and federal tax calculators for individuals, freelancers, and small businesses.