How to File Unfiled Tax Years: A Step-by-Step Guide

Aug 10, 2025

Filing unfiled tax years can seem like a daunting task, but with the right approach, you can efficiently navigate the process and ensure compliance with the IRS. Whether you've missed one tax year or several, this step-by-step guide will help you through the process.

Gather Your Tax Documents

The first step in filing unfiled tax years is to gather all necessary tax documents. This includes W-2s, 1099s, interest and dividend statements, and any other relevant income documentation for each year you need to file. If you’re missing any documents, you can request copies from your employer or financial institutions.

tax documents

Request Transcripts from the IRS

If you're unable to gather all your documents, requesting a transcript from the IRS can be helpful. The IRS can provide you with a transcript of your account, which will show all income reported to them for each year in question. You can request these transcripts online through the IRS website.

Determine Which Years to File

While it's important to file all unfiled tax years, the IRS typically requires at least the last six years to be filed. To determine which years to focus on, consider any specific notices you've received from the IRS and consult a tax professional if needed.

calendar years

Use the Correct Forms for Each Year

Once you know which years you need to file, ensure you're using the correct forms for each year. Tax forms and regulations can change annually, so using the correct form for each year is crucial. These forms can be downloaded from the IRS website.

Complete and Submit Your Returns

After gathering your documents and forms, it's time to complete and submit your returns. Double-check your work to avoid any errors that could lead to further complications. If you're filing multiple years, consider filing them in order to maintain a clear record of your filings.

tax filing

Consider Professional Help

If filing unfiled tax years feels overwhelming, consider hiring a tax professional. They can provide guidance through the process, ensure accuracy, and communicate with the IRS on your behalf if necessary. This is especially recommended if you owe back taxes or have complex financial situations.

Address Any Penalties or Interest

Filing late often results in penalties and interest. Once your returns are submitted, review any notices from the IRS regarding these charges. Payment plans are available if you cannot pay the full amount owed immediately. It’s important to address these promptly to avoid further penalties.

penalty fees

Stay Compliant Moving Forward

After resolving past unfiled tax years, make it a priority to stay compliant moving forward. Set reminders for filing deadlines and consider using accounting software to keep track of your financial documents throughout the year. Consistency is key to avoiding future issues with unfiled taxes.