Amortization Calculator
Generate Your Complete Loan Amortization Schedule 🏠 | Mortgage | Auto | Personal Loan
What is Loan Amortization?
Loan amortization is the process of paying off a debt over time with regular, fixed payments. Each payment covers the interest cost first, then reduces the principal balance. Early in the loan term, most of your payment goes toward interest; later, more goes toward principal.
This amortization calculator works for mortgages, auto loans, personal loans, student loans, and any other fixed-rate installment loan. It generates a complete schedule showing exactly how much interest you'll pay and when your loan will be paid off — including the impact of extra payments.
How to Use This Amortization Calculator
- Enter your Loan Amount (principal borrowed).
- Set the Loan Term in years (e.g., 15, 30 for mortgages).
- Input the Annual Interest Rate (e.g., 5.5% for a typical mortgage).
- Optionally add an Extra Monthly Payment to see how much you save.
- Click "Generate Amortization Schedule" to see monthly payment, total interest, and full payment breakdown.
Amortization Formula
Where: P = loan amount, r = monthly interest rate, n = total payments (years × 12)
Why Extra Payments Matter
$250,000 @ 5.5% / 30 years
Total Interest: $261,000
Same loan + $100 extra
Total Interest: $205,000
Save: $56,000 + 5 years sooner
Benefits of an Amortization Calculator
- Understand your loan: See exactly where your money goes each month.
- Compare scenarios: Test different rates, terms, and extra payments.
- Save thousands: Visualize how even small extra payments reduce total interest.
- Refinance decisions: Compare current loan vs. new loan amortization.
Frequently Asked Questions
What is a fully amortizing loan?
A fully amortizing loan is designed to be completely paid off by the end of its term with regular fixed payments — exactly what this calculator demonstrates.
Does making bi-weekly payments help?
Yes. Bi-weekly payments result in one extra full payment per year, reducing total interest and shortening the loan term by several years.
What's the difference between amortization and depreciation?
Amortization applies to loan payments (intangible assets). Depreciation applies to physical asset value reduction. Both spread costs over time but for different purposes.
Can I use this for car loans?
Absolutely. Auto loans (typically 3-7 years) follow the same amortization formula as mortgages. Enter your car loan amount, rate, and term.
How accurate is this calculator?
It's highly accurate for standard fixed-rate loans. Rates are assumed constant, and payments are made on time without fees or penalties.
💡 Pro Tip: Run your loan through this calculator before signing. Even adding $50-100 extra per month can save you tens of thousands in interest over a 30-year mortgage.