In MD, do you have to claim 1099 INT from the mortgage company?

Yes, you have to report interest paid to you by your mortgage company on a form 1099-INT for your Maryland state tax return. Any interest that is reported in box 1 of your Form 1099-INT is included in your Maryland income.

A Form 1099-INT reports interest income paid to you as opposed to a Form 1098 that reports the amount of interest you paid to the lender for your mortgage.  

You should enter any 1099's that you have received into TurboTax. 

Only Interest income for obligations and securities of the State of Maryland (such as state and municipal bonds), is not taxable.

Click here for additional information on interest that is not taxable in Maryland.