Illinois Mortgage Refinance Calculator

By SoFi Editors | Updated November 20, 2025

Refinancing your home loan is a potentially powerful way to manage your finances more effectively; however, it’s important to fully understand both the potential benefits and the associated costs before making any decisions. Whether you’re an Illinois resident exploring your options, or a homeowner located in another state, utilizing a mortgage refinance calculator can be helpful. Let’s take a look at how a refinance calculator works and how to use it to your best advantage.

Key Points

•  Using an Illinois mortgage refinance calculator can help homeowners estimate potential costs and savings linked to a new loan.

•  The break-even point is an important number that helps determine if the savings from refinancing will outweigh the initial expenses within a reasonable timeframe.

•  Refinancing to a lower interest rate, even by a small margin, can significantly reduce monthly payments and total interest paid.

•  Choosing a shorter loan term through refinancing can lead to higher monthly payments but lower total interest costs.

•  Purchasing mortgage points can lower your interest rate and monthly payments, but the upfront cost and break-even point must be carefully considered.


Illinois Mortgage Refinance Calculator


Calculator Definitions

•  Remaining loan balance: The remaining loan balance is the principal amount still outstanding on your current home loan. Accurate input ensures a reliable estimate of monthly payments with a new loan.

•  Current/New interest rate: Interest rate is the percentage of the loan amount charged by the lender. Lowering your interest rate can reduce monthly payments and total interest paid over the loan’s life.

•  Remaining/New loan term: The loan term is the duration over which you will repay your mortgage. In this case, you’ll need to input both the number of years remaining on your existing loan and the number of years you would like for your new loan term.

•  Points: Mortgage points are upfront fees paid to the lender to reduce your interest rate. Each point costs 1% of the loan amount and reduces your rate by 0.25%.

•  Other costs and fees: Refinancing involves various costs and fees, such as origination fees, appraisal fees, and attorney fees. These can range from 2% to 5% of the new loan amount.

•  Monthly payment: Your monthly payment includes the principal and interest on your mortgage. The refi calculator helps you compare your current payment to your estimated new payment.

•  Total interest: Total interest is the overall cost of the loan, excluding the principal amount. It can accumulate significantly over the life of the mortgage.