Amounts reported on Form W-2, Box 12 with a Code W - Employer contributions to your Health Savings Account will be transferred to Line 7, Column C of California Schedule CA to be added to income on Line 16 of California Form 540.

Per the California Instructions for Schedule CA (540):

Employer health savings account (HSA) contribution. Enter the amount of any employer HSA contribution from federal Form W-2, box 12, code W on line 7, column C.

To enter Box 12 amounts with Code W:

  1. From within your TaxACT return (Online or Desktop) click on the Federal Q&A tab
  2. Click Wages and Salaries to expand the category, then click Wage income reported on Form W-2
  3. Click Add to create a new Form W-2, or click Review to review a form already created
  4. If you select Step-by-Step Guidance continue to the screen for Boxes 12-13 and select W - Employer contributions to your Health Savings Account from the drop-down menu for Box 12. If you select Quick Entry, scroll down and enter W for the Box 12 code.

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