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Level 1
January 18, 2026
Solved

Box 12 Code W

  • January 18, 2026
  • 1 reply
  • 12 views

On my W-2 I have an amount listed under Box 12 Code W. When I enter that amount in Turbo Tax. It increases my federal tax burden by about 30% of the amount and my state tax (Oregon) burden by about 10%. 

 

Why would entering any amount here increase my tax burden? 

    Best answer by dmertz

    TurboTax treats the code-W amount as an excess HSA contribution subject to tax and penalty until you complete the HSA section of TurboTax to indicate your eligibility for an HSA contribution.

    1 reply

    dmertzAnswer
    Level 15
    January 18, 2026

    TurboTax treats the code-W amount as an excess HSA contribution subject to tax and penalty until you complete the HSA section of TurboTax to indicate your eligibility for an HSA contribution.