I am over 50 and should be able to contribute $8k to my Roth, when I enter $7k no extra tax but $8k my tax goes up like there is additional tax. Why?

[lisa]

There is a 6% tax with excessive contributions. This increased amount seams similar. I wonder if it’s a glitch in the TurboTax system.

[SteamTrain]

@lisa 

Any chance your income is in the phase-out range?

Check the tables here:

Traditional and Roth IRA Contribution Limits | Fidelity Investments

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Assuming you were born in 1975, or earlier...and it was an actual ROTH IRA.

IF not the issue  (probably not or the excess would record for the $7k too)

Call Customer Support for investigation, and get a repair ticket issued:

How do I contact TurboTax?

[dmertz]

The other possibility is that you have only $7,000 of compensation to support an IRA contribution.