What Form Do I Need for Deducting 401k and HSA Contributions?

If you have both a 401k and an HSA (Health Savings Account), you may be wondering what form you need to deduct contributions from both accounts. Deducting contributions from your 401k and HSA can have specific tax implications, so it's essential to use the right form to accurately report your deductions.

When it comes to deducting contributions from your 401k and HSA, you will need to fill out the following form:

  • Form 8889: This form is used to report HSA contributions and calculate the deduction you can take for your HSA contributions.

Form 8889 will require you to provide details about your HSA contributions, calculate the allowable deduction, and report any distributions you may have taken from your HSA. Make sure to fill out this form accurately to avoid any issues with the IRS.

Additionally, when deducting contributions from your 401k, you will need to look out for any specific forms required by your 401k provider or financial institution. These forms may vary depending on the type of 401k plan you have and the contributions you are looking to deduct.

By using the correct forms for both your 401k and HSA contributions, you can ensure that you are accurately reporting your deductions and maximizing your tax benefits. If you are unsure about which forms to use or how to fill them out, consider consulting a tax professional for guidance.


When it comes to your retirement and healthcare savings, understanding the forms required for deducting contributions to both your 401k and HSA is key to making the most of your tax benefits. Be sure to use Form 8889 to report all HSA contributions accurately.

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