If you already have a mortgage, refinancing could be one of the most impactful financial decisions you make as a homeowner. A mortgage refinance calculator helps you quickly see whether switching to a lower interest rate could reduce your monthly payment, save you money over the life of your loan, and how long it will take to break even on your closing costs.
As part of its commitment to educate and empower consumers, Kikoff offers a mortgage refinance calculator. Our free tool lets you compare your current loan against a potential new one, so you can see exactly how much you might save each month and in total before making a decision. The more clearly you understand the numbers, the easier it will be to decide if refinancing makes sense for you. Let's dive in.
How to use the mortgage refinance calculator
Our mortgage refinance calculator is built to be user-friendly. Here's how to get the most accurate estimate:
- Enter your closing costs: These are the fees associated with taking out the new loan, which typically range from 2% to 5% of the loan amount
- Enter your current balance: This is the remaining amount you owe on your existing mortgage
- Input your current interest rate: This establishes your baseline monthly payment for comparison
- Enter your new interest rate: Based on what lenders are currently offering for your credit profile
- Set your remaining term: How many years are left on your current loan
- Choose your new loan term: To see how changing the length of your loan affects your payment and total cost — for example, comparing a shorter 15-year term against your current loan
Once you enter these details, the mortgage refinance calculator will show your current monthly payment, your new monthly payment, your monthly savings, your total lifetime savings, and your break-even point. The break-even point is the number of months it will take for your cumulative savings to exceed the closing costs you paid upfront.
Experiment with different new interest rates and loan terms to find the combination that works best for your situation. Keep in mind that extending your loan term will lower your monthly payment but may increase the total interest you pay over time, while shortening your term will do the opposite.
How does mortgage refinancing work?
Refinancing a mortgage means replacing your existing home loan with a new one, ideally at a lower interest rate or with more favorable terms. Here are the basics of how it works:
- You apply for a new loan with a lender of your choosing
- If approved, the new loan pays off your existing mortgage balance
- You begin making payments on the new loan under the new terms
- If your new rate is lower, more of each payment goes toward principal instead of interest
- Your break-even point is when your cumulative monthly savings equal the closing costs you paid to refinance
Refinancing makes the most sense when interest rates have dropped meaningfully since you took out your original loan, when your credit score has improved enough to qualify for a significantly better rate, or when you want to change your loan term to better align with your financial goals.
Mortgage refinancing: What you need to know
Not every situation calls for refinancing, and it is important to weigh the potential savings against the upfront costs involved. Closing costs on a refinance typically range from 2% to 5% of the loan balance, which means it can take several years of monthly savings to fully recover those costs. If you plan to move or sell the home before reaching your break-even point, refinancing may not be worth it.
It is also worth considering how far along you are in your current loan. Because mortgage interest is front-loaded, refinancing early in your loan term — which you can visualize using the mortgage amortization calculator — produces more meaningful interest savings than refinancing near the end when most of your remaining payments are already weighted toward principal.
Your credit score plays a central role in what refinance rate you qualify for. Shopping around and comparing offers from multiple lenders will help you find the best available rate before you commit.
Terminology defined
Refinancing a mortgage involves some terms worth understanding before you start the process. Here are the key ones:
- Current balance: The remaining principal you owe on your existing loan
- Interest rate: The percentage the lender charges you for borrowing money
- Closing costs: Fees associated with taking out the new loan, including lender fees, title insurance, and appraisal costs
- Monthly savings: The difference between your current and new monthly payment
- Lifetime savings: The total amount you save in interest over the remaining life of the loan
- Break-even point: The number of months until your cumulative monthly savings equal the closing costs paid upfront
If you have questions or concerns about what any of these terms mean, ask your lender. They can further explain how they impact your refinancing decision so you can make an informed choice.
How your credit score impacts your refinance rate
The interest rate you qualify for when refinancing depends heavily on your credit score. The higher your score, the better your odds of being approved for a lower rate. If your score has improved since you originally took out your mortgage, refinancing could be a meaningful opportunity to reduce both your monthly payment and the total amount you pay over the life of your loan. Even a half-point reduction in your rate can translate to significant savings over a 15 or 30-year term.
Use Kikoff to improve your refinance odds
Want to boost your score and strengthen your credit history before you apply? Kikoff includes a variety of tools designed to help, including an invitation-only credit builder loan, secure credit card, free verified rent reporting, and more.
Take a step toward stronger credit habits with Kikoff.
Frequently asked questions
When does it make sense to refinance my mortgage?
Refinancing generally makes the most sense when you can qualify for a meaningfully lower interest rate than your current one, when your credit score has improved since you first took out the loan, or when you want to shorten your loan term to pay off your home faster. The mortgage refinance calculator can help you determine whether the savings justify the switch based on your specific numbers, particularly by showing how long it will take to break even on your closing costs.
How much do closing costs typically add up to?
Closing costs on a mortgage refinance typically range from 2% to 5% of the loan balance. On a $250,000 loan, that means closing costs could run anywhere from $5,000 to $12,500. These costs include lender origination fees, title insurance, an appraisal, and other standard expenses. It is important to factor these into your break-even calculation to make sure the long-term savings outweigh the upfront investment.
Will refinancing hurt my credit score?
Applying for a refinance loan typically triggers a hard credit inquiry, which may cause a small, temporary dip in your credit score. However, if refinancing leads to a lower monthly payment that you consistently make on time, the long-term impact on your credit can be positive. If you are shopping multiple lenders, try to do so within a short window of time, as credit bureaus often treat multiple inquiries for the same type of loan within a 14 to 45 day period as a single inquiry.
