Mortgage Refinance Calculator
Financial CalculatorsEvaluate if refinancing your mortgage is financially beneficial by comparing current vs. new loan costs.
Current Loan
New Loan
Refinancing saves $106 / month
You will break even in 38 months. Lifetime savings: $122,816
Break-Even Point
How to Use the Mortgage Refinance Calculator
Determine whether refinancing makes financial sense by comparing monthly payments, closing costs, break-even months, and lifetime savings
Enter Existing Loan Balance & Rate
Input your current remaining principal balance, current interest rate (%), and years left until your existing mortgage is paid off.
Set New Loan Terms & Lower Rate
Specify the newly offered interest rate and desired amortization term (e.g. 15, 20, or 30 years) for the replacement loan.
Include Upfront Refinancing Costs
Account for all closing fees, lender points, appraisal costs, title insurance, and settlement charges required to execute the refinance.
Evaluate the Break-Even Point
Identify exactly how many months of lower payments are required before your monthly savings fully repay the upfront closing costs.
Compare Monthly Savings vs. Lifetime Cost
Review the verdict to ensure that lowering your monthly payment does not secretly increase total lifetime interest by resetting loan years.
Examine the New Amortization Schedule
Inspect the annual breakdown of principal reduction, interest charges, and outstanding loan balance across the life of the new loan.
Frequently Asked Questions
Practical answers on break-even timelines, closing points, loan resets, and rate-and-term strategies
Q:How is the refinancing Break-Even Point calculated?
The break-even point is calculated by dividing your total upfront refinancing closing costs by your monthly payment reduction: Break-Even Months = Closing Costs / (Current Monthly Payment - New Monthly Payment). If you plan to sell the home before reaching this month, refinancing loses money.
Q:Why can refinancing to a lower rate sometimes increase lifetime costs?
If you have already paid 10 years of a 30-year mortgage (with 20 years remaining) and refinance into a brand-new 30-year loan, you reset your amortization clock back to 30 years. Even with a lower interest rate, paying interest for 10 additional years can easily outweigh the monthly rate reduction.
Q:How much of an interest rate drop justifies refinancing?
The traditional rule of thumb is a 0.75% to 1.0% interest rate decrease. However, on larger mortgage balances ($300,000+), an interest rate drop of even 0.5% can justify refinancing if closing costs are modest and you intend to stay in the property for several years.
Q:What closing costs are typical when refinancing a mortgage?
Refinancing closing costs typically total 2% to 5% of the new loan principal. They include lender origination charges, home appraisal fees, credit report fees, title search and insurance, recording fees, and attorney charges.
Q:What is the difference between a rate-and-term refinance and a cash-out refinance?
A rate-and-term refinance solely adjusts your interest rate, loan duration, or monthly payment without changing the principal owed. A cash-out refinance borrows a higher principal amount against your accumulated home equity, pocketing the cash difference for home renovations or debt consolidation.
Q:When is it smart to refinance into a 15-year mortgage?
Refinancing from a 30-year to a 15-year mortgage is ideal when your income has grown, allowing you to secure a lower interest rate, build home equity at more than double the speed, and save tens of thousands in lifetime interest charges.
- Refinance Costs: Sum of all fees (closing costs, appraisal, points).
- Monthly Savings: Current monthly payment minus new monthly payment.
What is Mortgage Refinance Calculator?
Practical Calculation Example
Strategic Refinancing Models
| Refinance Strategy | Financial Structure | Primary Strategic Objective |
|---|---|---|
| Rate-and-Term | Adjusts the baseline interest rate or the total loan duration. | Minimizes total accrued interest or reduces the immediate monthly cash flow burden. |
| Cash-Out | Increases the total principal to extract liquid home equity. | Accesses capital for high-yield property renovations or high-interest debt consolidation. |
| Cash-In | The borrower brings bulk capital to closing to reduce the principal. | Rapidly lowers the Loan-to-Value (LTV) ratio, typically to eliminate Private Mortgage Insurance (PMI). |