Mortgage Refinance Calculator

Use this calculator to compare the benefit of refinancing and keeping the current mortgage.

Mortgage Refinance

This tool helps you:

  1. Evaluate whether refinancing your mortgage makes financial sense. It compares the potential savings from a lower interest rate against any up-front refinancing fees, helping you understand the true benefit of refinancing.

  2. It also allows you to explore options if you need extra cash. You can compare taking a cash-out refinance versus a personal loan, and the tool calculates the implicit interest rate on the cash-out option to show the real cost of borrowing.

  3. By modeling these scenarios, you can make an informed decision that balances immediate cash needs, long-term interest savings, and overall financial strategy.

Current Loan

Current property value
Original loan amount
Original loan term (years)
Mortgage rate
Loan start date
Loan balance

New Loan

Cash out
(added to loan amount)
Loan amount
Loan term (years)  
Mortgage rate
Refinance fee
(added to loan amount)

Refinance Consideration

Current

New

Difference

Monthly payment
10-year payment
All future payment
All future interest
Cash out amount
Implicit interest rate

Future Monthly Payment Difference

Content created by

AlexCFA, FSA, FRM, MBA

Alex is a seasoned finance professional with over 15 years of experience in investment management and financial technology. He began his career as a financial advisor and later led large-scale budgeting and risk management initiatives at global consulting firms. He also brings extensive experience as both an investment analyst and a software engineer. Alex is a CFA® charterholder, Fellow of the Society of Actuaries (FSA), and Financial Risk Manager (FRM®).

Content published on 2024-04-01. Last reviewed and updated on 2026-02-11.

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