Why does adding an IRA contribution increase my federal tax due instead of reducing it? I am over 50, I had 10k taken from my paycheck already. Added 14k and tax went up.

[dmertz]

The increase in your balance due is the result of an excess contribution penalty.

Enter amounts shown in box 12 of your W-2 only in box 12 of TurboTax's W-2 form, nowhere else in TurboTax.

The Traditional and Roth IRA Contributions section is only for your personal contributions to an IRA, not to an employer-sponsored plan, and the limit for those contributions for 2019 is $6,000, plus a $1,000 catch-up for those age 50 or over in 2019.