State Credit for property taxes: not accepting input data I input the numbers and then when I hit continue, it tells me to review it again. Not sure why...

[AmyC]

I would think you have an answer missing to not get the credit- when you paid taxes. See Publication 108, Illinois Property Tax Credit

@lariviema 

[benslow]

Read the last paragraph on page 3 of that publication:

"May I receive a refund if my property tax credit
exceeds the income tax I owe?
If your property tax credit exceeds the income tax you owe, you may
not receive a refund for that amount, and you may not carry unused
credit to other years. Your property tax credit may only reduce the
income tax you owe to zero."

My income tax owed was already zero because I only have retirement- Pension, SS and 401k and they are not taxed in IL.