Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Mortgage Prepayment Strategy Calculator

Determine whether making extra mortgage payments or investing that money elsewhere produces a better financial outcome. Use it when you have discretionary cash and want to optimize your long-term net worth.

Current Mortgage Balance ($)

Interest Rate (%)

Remaining Years (years)

Extra Monthly Payment ($) (optional)

Alternative Investment Return (%)

Fill in the required fields to see your result.

Mortgage Advanced

ARM vs Fixed Rate Mortgage Comparison

Compare the total cost of a fixed-rate mortgage against an adjustable-rate mortgage over a full 30-year term. Use this when deciding between an ARM's lower introductory rate and a fixed rate's long-term stability.

Loan Amount ($)

Fixed Rate (%)

ARM Initial Rate (%)

ARM Type

Expected Rate Increase After Adjustment (%)

Fill in the required fields to see your result.

Key differences

	Mortgage Prepayment Strategy Calculator	ARM vs Fixed Rate Mortgage Comparison
Category	Mortgage Advanced	Mortgage Advanced
Inputs required	5	5
Result	Prepayment Advantage ($)	Monthly Payment Difference (Fixed - ARM) ($)
What it does	Determine whether making extra mortgage payments or investing that money elsewhere produces a better financial outcome. Use it when you have discretionary cash and want to optimize your long-term net worth.	Compare the total cost of a fixed-rate mortgage against an adjustable-rate mortgage over a full 30-year term. Use this when deciding between an ARM's lower introductory rate and a fixed rate's long-term stability.