Calculator

See if refinancing actually saves you money

Compare your current mortgage with a new rate and term. See real monthly savings, lifetime savings, and whether a refi is worth the closing costs — for your exact loan.

Current loan

Remaining term28 years

New loan

New term30 years

Old vs new

Current payment (P&I)
$2,158
Total interest remaining: $415,117
New payment (P&I)
$1,909
Total interest (new): $377,140
Monthly savings
+$249/mo
Break-even on closing costs
Stay past this point and you start saving real money.
31 months
Lifetime savings (after closing costs)
$30,477

Assumes you keep the new loan to term. If you sell or refi again early, actual savings may differ. Estimates only based on national averages. Always confirm with a licensed lender.

Quick check

Does refinancing make sense for you?

  • Current rate is at least 0.75-1% above today’s market rate.
  • You plan to stay longer than the break-even point.
  • Your credit has improved since your original mortgage.
  • You want to switch from an ARM to a fixed rate, or drop PMI.
  • You are okay resetting the clock if the monthly savings are substantial.
How to use this calculator

Side-by-side your old and new loan

1. Enter your current loan balance and rate.

2. Enter the remaining years on your existing loan.

3. Enter the new rate and term you are quoted.

4. Enter the refinance closing costs (typically 2-4% of loan).

Compare monthly savings to break-even before signing.

The math behind it

Lifetime vs short-term savings

Monthly savings = old payment – new payment. Break-even = closing costs ÷ monthly savings.

Lifetime savings = old total interest – new total interest – closing costs.

If you plan to stay longer than break-even AND lifetime savings are positive, refinancing is almost always a win.

Related tools

Keep planning with our other free calculators and guides.

Frequently asked questions