How do flawed tax assessments impact your mortgage and rent?  Consider, a Black resident in Forest Park, Illinois' tax bill on a $98k mortgage, property taxes nearly $14k for one year. Versus the tax bill of a White, Rodgers Park resident; is billed $12k for a nearly $700k home. On a $98k home, $7,280 in property taxes are paid to the school district, based on the above tax bill.