Get your taxes done using TurboTax

it you don't have Form 6251 on last year's tax return that would suggest you didn't pay AMT.  T

 

THAT is the critical form used to calculate whether you owe the higher of Regular or AMT tax. 

 

and if it isn't there, then the state refunds is taxabler income this year (assuming you itemized last year)

 

go back to the 2017 Form 1040 and look at line 45. if it is blank you did not pay AMT last year.  If it is not blank, there HAS TO BE a Form 6251

 

what version of TT are you using? Online or Desktop?