Get your taxes done using TurboTax

for 2018 tax return, I did follow the procedure you suggested.  I entered all the Security Tax , Medicare tax and Federal Income tax withheld from the schedule H prepared by the employment payroll service.  IRS refunded me the entire amount of those three items.  

For 2019, I did the same thing entered all those three items. Then my tax liability went up for the total of the 3 items on line 8 of the schedule H.  I realized maybe the reason I got the refund from IRS is because I double paid the Schedule H taxes.  I should not enter those amount on the 1040 since the payroll services has already paid them for me.  What did I do wrong that made me to enter those tax liability twice on the step by step questionnaire.  thank you so much for you quick reply.  Jenny