Amortization Calculator

An amortization schedule lists each payment's split between principal and interest and shows the remaining loan balance after every period. It is the...

Modify the values and click the Calculate button to use.
Results

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Schedule

Introduction

An amortization schedule lists each payment's split between principal and interest and shows the remaining loan balance after every period. It is the standard roadmap for fixed-rate mortgages, auto loans, and personal loans.

What Is an Amortization Schedule?

An amortization schedule lists each payment's split between principal and interest and shows the remaining loan balance after every period. It is the standard roadmap for fixed-rate mortgages, auto loans, and personal loans.

How Amortization Works

Each payment covers interest on the current balance first; the remainder reduces principal. As principal falls, interest charges shrink and more of each payment attacks the balance—accelerating payoff near the end of the term.

Annual vs Monthly Views

Annual summaries help with tax planning (mortgage interest deduction where applicable). Monthly detail is useful for modeling extra principal payments and verifying lender statements.

Extra Payments

Even modest extra principal payments can shorten the loan and save substantial interest. Use the Mortgage Payoff Calculator or Loan Calculator to quantify savings from biweekly or lump-sum prepayments.

How It Works

  1. Enter your amounts, rates, and term in the form. Use the same units shown in the labels (dollars, years, percent).
  2. Click Calculate to run the Amortization Calculator engine. Invalid or empty required fields show a clear error message.
  3. Review the summary cards for the key outputs. Expand schedules or tables when available for period-by-period detail.
  4. Copy, print, or share your scenario link. Reset the form anytime to start a fresh comparison.

Formula

Monthly payment (amortizing loan): M = P * [r(1+r)^n] / [(1+r)^n - 1], where P is principal, r is monthly rate (APR/12), and n is number of months.

FAQ

Yes. CDCalculator.io provides the Amortization Calculator at no charge for personal and educational use. Results are estimates and not financial advice.

The tool uses standard formulas lenders and planners use in spreadsheets. Your bank may round differently or include fees not modeled here.

Use the Copy Results and Print buttons on the calculator panel after you run a scenario. You can also share the page link with colleagues.

Focus on realistic rates, terms, and any extra payments or contributions. Small changes in APR or time horizon often move outcomes more than rounding.

No. Use this calculator to explore scenarios, then consult a qualified advisor or lender for decisions about mortgage & real estate products.