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The Daily Insight

How do I file old taxes in California?

Author

Andrew Mclaughlin

Published Apr 01, 2026

How to file your California state tax return

  1. E-file and pay for free with CalFile through the Franchise Tax Board’s website. You’ll need to create an account.
  2. File for free through an online tax-filing service like Credit Karma Tax®.
  3. E-file through a fee-based tax-filing service.
  4. Download forms through the FTB website.

Why do I owe so much California state taxes?

Filing a late tax return is one of the most common reasons that a large number of taxpayers owe money to the FTB. Specifically, a taxpayer can incur late fees on an unfiled return the day after not filing their tax return.

How to file a federal tax return for 2015?

In order to file a 2015 IRS Tax Return, download, complete, print and sign the 2015 IRS Tax Forms below and mail the forms to the address listed on the IRS and State Forms. Select your state(s) and download, complete, print and sign your 2015 State Tax Return income forms. You can no longer claim a refund for Tax Year 2015.

How to file a California tax return by mail?

If you would like to file a paper tax return by mail, you’ll need to download and print our forms and instructions. 4. . To find out what form you need to use, visit our file page and select your filing situation. 5.

Where to find 2015 income tax and benefit package?

To get any other documents that you need, go to Previous-year forms and publications list. Select the province or territory in which you resided on December 31, 2015. If you were a deemed resident or non-resident of Canada in 2015, see 2015 Income Tax and Benefit Package (for non-residents and deemed residents of Canada).

When do you have to file an income tax return?

Regardless of your gross income, you are generally required to file an income tax return if any of the following are true: You had net self-employment income of $400 or more. You had unemployment income. You owe Alternative Minimum Tax. You owe household employment taxes.