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Amortization Calculator

Calculate loan payments and view detailed amortization schedule

How to Use This Amortization Calculator

This calculator shows you exactly how each loan payment breaks down between principal and interest over the life of your loan.

Steps:

  1. Enter the total loan amount you're borrowing
  2. Input the annual interest rate (APR)
  3. Set the loan term in years (e.g., 15, 30 years for mortgages)
  4. Optionally add extra monthly payments to see interest savings
  5. Select the date of your first payment
  6. Click 'Calculate' to see your payment schedule

Amortization Formula

The monthly payment is calculated using the standard amortization formula:

  1. M = P × [r(1+r)ⁿ] / [(1+r)ⁿ - 1]
  2. M = Monthly payment, P = Principal, r = Monthly rate, n = Number of payments
  3. Early payments are mostly interest; later payments are mostly principal
  4. Extra payments directly reduce principal and save significant interest

Understanding Loan Amortization

Loan amortization is the process of paying off a debt through regular, scheduled payments over time. Each payment includes both principal (the original loan amount) and interest (the cost of borrowing). An amortization calculator helps you visualize exactly how much of each payment goes toward principal versus interest. In the early years of a loan, most of your payment goes toward interest. As the loan matures, more of each payment reduces the principal balance. This calculator is essential for understanding mortgages, auto loans, personal loans, and any other installment debt. By seeing the complete payment schedule, you can make informed decisions about extra payments, refinancing, or choosing between different loan terms.

Calculator Features

Complete month-by-month amortization schedule

Principal vs interest breakdown for each payment

Extra payment calculator showing interest savings

Total interest cost over the life of the loan

Payoff date calculation

Visual breakdown of where your money goes

Support for any loan type (mortgage, auto, personal)

Date-based payment schedule

Why Use This Amortization Calculator

See exactly where each payment dollar goes

Calculate interest savings from extra payments

Compare different loan terms (15 vs 30 year)

Plan your debt payoff strategy

Understand mortgage vs principal payments

Make informed refinancing decisions

Budget accurately for monthly loan payments

Calculate total cost of borrowing

Common Use Cases

30-year fixed-rate mortgage calculations

15-year mortgage vs 30-year comparison

Auto loan payment schedules

Personal loan amortization

Student loan payoff planning

Home equity loan calculations

Extra payment impact analysis

Refinance decision modeling