Are HSA Contributions in Box 12 of W2 Employer or Employee? - A Guide to Understanding HSA Contributions

When it comes to HSA contributions on a W-2 form, confusion often arises about whether they should be listed under the employer's Box 12 or the employee's Box 12. HSA contributions are typically made by both the employer and the employee, each making their own contributions towards the account.

Here's a breakdown of how HSA contributions are reflected in a W-2 form:

  • HSA contributions made by the employer are reported in Box 12 with the code W. These contributions are considered as part of the employee's income, but they are also excluded from the employee's taxable income.
  • HSA contributions made by the employee are not reported in Box 12 of the W-2 form. Instead, the employee's contributions are often deducted from their taxable income when filing taxes.

It's important for individuals to understand how HSA contributions are handled on a W-2 form to ensure accurate reporting of income and deductions during tax season.


Understanding the nuances of HSA contributions on a W-2 form can help you maximize your tax savings. While employer contributions are reported in Box 12 with code W, remember that these contributions are a valuable part of your overall compensation but are excluded from taxable income.

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