The median home price in Illinois is $265,000. At 80% LTV, the typical loan is $212,000 at the current 6.95% average rate, producing a monthly P+I payment of $1,403. Total interest over 30 years at this rate: $293,199.
Property taxes in Illinois average 2.27% of assessed value, or $6,016 per year on the median home. This adds $501/month to your all-in housing cost. When evaluating a refinance, factor in property tax and insurance for a complete picture.
Illinois residents can deduct mortgage interest on state income tax returns for primary residences, subject to state-specific limits. The federal mortgage interest deduction applies on loans up to $750,000.