Mortgage Payment & Loan Estimator
Calculate fixed monthly principal & interest payments, total lifetime financing interest, and overall loan payoff cost using standard amortization…
Calculation Formula
How to Use the Mortgage Payment & Loan Estimator
- 1 Enter the Home Purchase Price ($).
- 2 Input your Down Payment amount ($ or %).
- 3 Set the annual Interest Rate (%) and select Loan Term (15 or 30 years).
- 4 Review your monthly payment and total lifetime interest cost.
Methodology & Algorithmic Standards
Implements standard fixed-rate amortization: M = P * [r(1+r)^n] / [(1+r)^n - 1], where P is Principal (Price | Down Payment), r is monthly interest (Annual Rate / 12 / 100), and n is total months (Years * 12).
Frequently Asked Questions
What does the monthly payment include? ▼
The primary calculation covers Monthly Principal & Interest (P&I). Property taxes, homeowners insurance, and PMI vary by municipality and lender.
How much interest do I save choosing a 15-year term vs a 30-year term? ▼
A 15-year mortgage typically cuts total lifetime interest paid by 50% to 65% compared to a 30-year loan, though monthly payments are higher.
What is the standard recommended down payment? ▼
20% down avoids Private Mortgage Insurance (PMI) on conventional loans, though many conventional loans permit 3% to 5% down.
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