Home & Mortgage

Refinance Calculator

Compare the remaining cost of a current mortgage with a proposed refinance. Include the new rate and term, points, closing costs, and cash-out amount to estimate payment savings, lifetime interest, and the time needed to recover refinancing costs.

Current Loan

New Loan

Cash Out and Cost

There was an error with your calculation.

Refinance
Savings for the new loan $278.00/month
lifetime savings for the new loan $83,400.00
upfront cost $6,583.26
CURRENT LOAN NEW LOAN DIFFERENCE
Principal/Loan Amount $279,163.18 $273,579.92 $-5,583.26
Length 300 months 300 months 0 months
Interest Rate 6% 4.5% 1.5%
Monthly Pay $1,798.65 $1,520.65 $-278.00
Total Payments $539,595.00 $456,195.00 $-83,400.00
Total Interest $260,431.82 $182,615.08 $-77,816.74
Points Equivalent To $5,583.26
Cost + Points (Upfront) $6,583.26
Time to Recover Cost/Point 23.68 months
Calculator guide

Understanding the Refinance Calculator

Review the inputs, outputs, calculation method, and formulas used by this tool.

Input parameters

Original Amount of Current Loan
Original principal on the existing mortgage.
Loan Term
The length of time allowed to repay the loan.
Interest Rate
The annual percentage rate used in the calculation.
Time Remaining
Remaining term on the current loan.
New Loan Term
Term of the proposed replacement loan.
Points
Upfront points charged as a percentage of the new loan.
Cash Out Amount
Additional equity borrowed at refinancing.
Costs
Other refinancing closing costs.

Understanding the results

Current payment
Estimated payment on the existing loan.
New payment
Estimated payment after refinancing.
Monthly savings
Difference between current and new payments.
Break-even point
Months needed for savings to recover refinance costs.

Calculation principle

The current remaining balance is estimated, then compared with a new amortizing loan that includes cash out, points, and costs.

  1. Read and validate the entered values.
  2. Convert percentages and time periods into compatible units.
  3. Apply the formulas below and present the calculated results.

Formulas

Remaining balance B = amortized balance after elapsed payments
New principal P_new = B + Cash out + financed costs
Break-even months Break-even = Upfront costs / Monthly savings

Symbols refer to the corresponding input and result labels shown above.

How to use this calculator

Enter your figures, choose any available options, and select Calculate. You can change the inputs as often as you like to compare scenarios.

Planning note

Results are estimates for education and planning. Taxes, lender rules, fees, and investment returns can vary, so verify important decisions with a qualified professional.