I didn’t pay my 2017 state taxes

[piamamamia]

Will it add the amount owed to this years

[MollsBBU]

When you prepare your returns to be filed, the program will not account for any past tax debts due.

More likely, part of your refund will automatically be held by the IRS to pay for last year's debt - this is called an offset. 

More info about refund offsets, including contact info and the appeals process, is on IRS.gov (Tax Topic 203).