Complete Mortgage Calculator

Build a complete 15- or 30-year mortgage plan from home price and down payment, including optional housing costs, dated extra-principal payments, payoff comparisons, charts, and a full amortization schedule. Calculate it clearly with Figur.

Complete Mortgage Calculator

Build a complete 15- or 30-year mortgage plan from home price and down payment, including optional housing costs, dated extra-principal payments, payoff comparisons, charts, and a full amortization schedule.

Method and assumptions

Figur subtracts the down payment from the home price and calculates fixed monthly principal and interest with the standard amortization formula. Each month it calculates interest on the remaining balance, applies the scheduled payment, then applies any extra principal assigned to that month.

  • The interest rate is fixed, divided by 12, and the scheduled principal-and-interest payment stays constant over the selected 15 or 30 years.
  • Extra payments are applied to principal in the month of the entered date; this monthly model does not calculate daily interest between dates.
  • Property tax, insurance, PMI, and HOA are optional monthly estimates and do not change the loan amortization.
  • Closing costs, points, fees, prepayment penalties, escrow changes, and lender-specific rules are excluded.

Educational planning estimate, not a loan quote or financial advice. Confirm dates, extra-payment rules, fees, and actual figures with your lender.

Sources and references

Frequently asked questions

Can I leave taxes and insurance blank?

Yes. Property tax, homeowners insurance, PMI, and HOA are optional planning inputs. Principal and interest are always shown separately.

How are extra principal payments applied?

A recurring extra amount and each dated one-time amount are applied directly to principal in the selected payment month, after scheduled principal and interest.

Why is early interest so high?

Interest is calculated from the remaining balance, so early payments contain more interest and later payments contain more principal.