After you file

@jloewenberg1 - can you please post a screet shotof the $21,000?

 

I wonder if you are self-employed and the difference is the QBI deduction?  

 

there are otherwise 4 categories of itemized deductions

1) Medical - limited to the part that is over 7.5% of your AGI

2) State and local taxes - limited to $10,000

3) mortgage interest - limited in certain circumstances (mortgage over $750,000)

4) charitable contributions  - limited if exceeds a large portion of your AGI