Filing old tax returns: why older years go on paper

Paper filing for older years

The IRS accepts e-filed individual returns for the current tax year and the two years before it. Anything older has to be printed, signed and mailed. Paper returns take longer to process, so it’s worth sending them by certified mail and tracking them.

Reviewed by [REVIEWER NAME], Enrolled Agent · Last reviewed [DATE]

Which years can be e-filed

The IRS’s e-file system accepts the current tax year and the two prior years. In the 2026 filing season, that’s 2025, 2024 and 2023. A 2022 return or older has to go on paper.

How to file an older return

Use that year’s forms and rules. Tax brackets, standard deductions and credits change every year.
Sign and date it. If you’re married filing jointly, both spouses sign.
Mail it to the right address: the one on your IRS notice if you have one, otherwise the address in that form’s instructions.
Send it by certified mail with tracking, and keep a complete copy.

Why paper returns take longer

Paper returns are processed by hand. Returns with a balance due can sit longer, and posting to your account can take months. Certified mail gives you proof of when you sent each return, and you can check the IRS’s current processing times on IRS.gov.

How we handle it

We prepare each older year on its own year’s forms, a licensed preparer signs it, and we mail it by certified mail with tracking. Then we watch your IRS account until the return posts, and show the expected wait on your case timeline.

Common questions

Where do I mail an old return?

If you received an IRS notice about that year, send the return to the address on the notice. Otherwise, mail it where you’d send an on-time return for your state and situation, as listed in the form instructions.

How long until the IRS processes a paper return?

The IRS says an accurate past-due return takes about six weeks to process, but paper returns often take longer. The Treasury Inspector General found some paper returns with a balance due took over a year to post.

Do I need to use the old year’s forms?

Yes. Each return has to be prepared on the forms and under the tax rules for its own year.