Why does the TurboTax software INCREASE the tax due when I enter Investment Advisory Fees? Shouldn't they not impact the tax due at all?

[Anonymous_ · Accepted solution]

"Shouldn't they not impact the tax due at all?"

If you are referring to the 2018 tax year, then the Tax Cuts and Jobs Act eliminated that deduction so you should not be entering those fees in the first place. 

However, when investment advisory fees were deductible, entering the fees could also subject you to the alternative minimum tax (AMT) which, I suspect, is what is happening in this instance.