Mortgage Refinance Calculator

Mortgage Refinance Calculator

Estimate the new principal-and-interest payment after refinancing and compare it with your current mortgage payment.

UNDERSTAND A ANSWER

Aika ng calculated el ua ngerang?

The calculation amortizes the remaining balance over the new term at the new fixed rate. Closing costs, cash-out proceeds, escrow and prepayment penalties are excluded unless added to the new balance.

Refinance payment formulaNew payment = P × r(1 + r)ⁿ ÷ ((1 + r)ⁿ − 1)

A practical example

Refinancing a $280,000 balance at 5.5% for 25 years produces an estimated principal-and-interest payment near $1,720 per month before closing costs.

Calculated result

Remaining loan balanceNew annual rateCalculated result
$224,000.005.5%$1,271.85
$280,000.005.5%$1,589.81
$336,000.005.5%$1,907.77

Assumptions, interpretation me a common mistake

Calculation assumptions

  • Rates and recurring amounts stay constant for the period represented by the formula.
  • Inputs use the same monthly or annual time basis stated in each field label.
  • Taxes, fees and contractual rules are excluded unless the calculator explicitly asks for them.

El ua ngerang el interpret a result

  • Use the headline as a planning estimate and compare it with the detailed totals.
  • Run a baseline plus favorable and conservative scenarios before deciding.
  • Confirm important results against a lender, payroll statement, tax authority or signed contract as applicable.

Common mistakes el mo avoid

  • Mixing annual rates with monthly amounts or entering a percentage as a decimal.
  • Leaving out fees, taxes, changing rates or timing differences that apply to the real decision.
  • Treating approval guidelines, market returns or future appreciation as guarantees.