NavStreet tools

Residential mortgage calculators

Explore common home-financing scenarios with practical calculators designed to help you better understand payments, affordability and loan structure.

Select a calculator

What would you like to calculate?

Choose a calculator below. Each tool opens on its own page with detailed inputs and results.

Monthly payment

Mortgage Calculator

Estimate principal, interest, property taxes, homeowners insurance and your total monthly housing payment.

Buying power

Affordability Calculator

Estimate a potential home-buying range based on income, monthly obligations, available funds and interest rate.

Loan payment

Interest-Only Calculator

Calculate the periodic payment and total interest during an interest-only loan period.

Loan structure

Balloon Payment Calculator

Estimate the regular payment, remaining principal balance and final balloon payment for a balloon loan.

Loan analysis

Loan-to-Value Calculator

Calculate a loan-to-value ratio or estimate the maximum loan amount for a selected target LTV.

Payoff planning

Extra Payment Calculator

See how additional monthly or annual principal payments could affect interest expense and loan payoff time.