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Tool: Mortgage Amortization Calculator — Máy Tính Trực Tuyến Miễn Phí | HomeCalcPro | In ngày:
Mortgage Amortization Calculator — Máy Tính Trực Tuyến Miễn Phí | HomeCalcPro
Tính toán chính xác và tức thì với các công thức chuẩn cho Mortgage Amortization Calculator.
Parameters & Values
Computed Financial Summary
Real-timeAdjust parameters to update tax and amortization results.
Mortgage Amortization Formula
Transparent mathematical methodology explained in plain English.
Interest_t = Balance_(t-1) × (APR / 12) | Principal_t = Monthly Payment - Interest_tCalculates the shifting proportion of fixed monthly mortgage payments from interest-heavy in early years to principal-heavy in later years.
Variables Explained:
- Loan Amount ($): Starting mortgage principal balance.
- Interest Rate %: Fixed annual percentage rate (APR).
- Loan Term (Years): Repayment period (15, 20, or 30 years).
$400,000 Mortgage at 6.5% for 30 Years
Examining month 1 vs month 180 principal and interest allocation.
- Fixed Monthly Payment: $2,528.27/month.
- Month 1 Interest: $400,000 × (0.065 / 12) = $2,166.67 (85.7% of payment).
- Month 1 Principal: $2,528.27 - $2,166.67 = $361.60.
- Total Lifetime Interest Paid (30 Years): $510,177 on a $400,000 loan ($910,177 total repaid).
Câu Hỏi Thường Gặp (FAQ): Mortgage Amortization Calculator
Click any question below to expand quick answers, formulas, and expert tips.
Why does early mortgage payment go almost entirely toward interest?
Because monthly interest is calculated against the total outstanding loan balance, which is at its highest point during the first 5 to 10 years of the mortgage.
How much interest does a 15-year mortgage save compared to a 30-year?
A 15-year mortgage typically saves over 60% in total lifetime interest charges while building home equity more than twice as fast.