What is break-even point?

The break-even point is how long it takes for monthly savings to cover refinance closing costs.

Refinancing depends on your goals, rates, and costs. Use this tool to estimate savings and break-even time.

Does this include taxes and insurance?

This calculator focuses on principal and interest. Include taxes and insurance separately for full payment estimates.

Refinance Calculator

Compare current mortgage to a refinance offer and calculate monthly payment, savings, and break-even months.

How it works

Enter your current loan details and the proposed refinance terms. This tool compares principal and interest payments and estimates how many months it takes to recoup closing costs through monthly savings.

Refinance Calculator — Detailed Guide & Expert Explanation

The Refinance Calculator compares your current loan with a potential new loan to estimate savings or costs. Instead of manually crunching numbers, you enter current balance, rate, term, and new loan details, and the tool shows payment changes and total interest differences. This is useful for homeowners and borrowers considering refinancing.

You enter current loan amount, interest rate, remaining term, and proposed new rate and term. The calculator computes monthly payments and total interest for both scenarios.

By automating comparison, the tool helps you decide whether refinancing is financially beneficial.

Formula & Calculation Method


      Payment = [ P × r × (1+r)^n ] ÷ [ (1+r)^n − 1 ]  
      Interest Paid = ( Payment × n ) − P

The tool uses standard amortization formulas to compute payments for both current and new loans. It then compares total interest and monthly payment differences to estimate savings or added costs.

Real-World Use Cases

Homeowners evaluate mortgage refinancing. Borrowers compare personal loan offers. Investors analyze rental property financing changes. The tool is also helpful for planning payoff strategies.

Expert Notes & Limitations

Real refinancing includes closing costs, fees, and potential tax impacts. The calculator focuses on payment and interest comparisons. For full analysis, include fees and consult lender disclosures or a professional advisor.

Frequently Asked Questions

Does this include closing costs?

Only if you add them manually to your calculations.

Can refinancing increase total interest?

Yes, if the term is extended significantly.

Is a lower payment always better?

Not necessarily; total interest and fees matter.

Does this replace lender quotes?

No. It is a planning tool, not an official offer.

Should I consult a professional?

Yes, especially for large or complex loans.