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Finance Calculators

Amortization Calculator

Build an amortization schedule showing principal, interest and balance.

Free browser toolRuns in your browserNo sign-up
$1,687.71
Payment
$103,788.46
Total interest
$303,788.46
Total payment

Total repayment composition

Principal $200,000.00Interest $103,788.46

Each row shows how a payment splits between interest and principal, with the remaining balance falling to zero on the final payment.

How an amortization schedule works

Each fixed payment first covers interest on the outstanding balance. The remainder reduces principal, so the interest share falls over time.

Interest = opening balance x periodic rate; Principal = payment - interest
Payment
Fixed amount due each period
Interest
Cost on the current balance
Balance
Principal still unpaid

Worked example

On a $10,000 one-year loan at 6%, the monthly payment is about $860.66 and total interest is about $327.97.

Practical tips

  • Inspect early rows

    They show why principal falls slowly near the beginning of a long loan.

  • Model extra payments separately

    This schedule assumes no fees, skipped payments or additional principal payments.

About the Amortization Calculator

The Amortization Calculator shows how each payment on a loan is split between interest and principal, and how the balance falls to zero over the term.

It reports the payment amount, total interest and total payment, then lists a full schedule row by row for the chosen payment frequency.

Early payments are mostly interest while later payments are mostly principal. The number of rows is capped so the table stays responsive, and all maths runs in your browser.

Key features

  • Payment, total interest and total payment
  • Full principal and interest schedule
  • CSV download and print-to-PDF support
  • Monthly, quarterly or annual frequency
  • Responsive, scrollable table

How to use

  1. 1Enter the loan amount and choose a currency.
  2. 2Enter the interest rate and term in years.
  3. 3Choose the payment frequency.
  4. 4Read the summary and the row-by-row schedule.
  5. 5Open the schedule to download CSV data or print a PDF copy.

Examples

One-year schedule
Input: USD 10,000 at 6% for 1 year, monthly
Output: USD 860.66 payment; USD 327.97 total interest

The 12-row schedule shows interest falling and principal rising until the balance reaches zero.

Frequently asked questions

What is an amortization schedule?
It is a table showing every payment on a loan, split into interest and principal, along with the remaining balance after each payment.
Why is early interest higher?
Interest is charged on the outstanding balance, which is largest at the start. As the balance falls, each payment covers more principal.
Why is the number of rows limited?
Very long schedules can create thousands of rows. The term is capped so the table renders quickly and stays usable on small screens.

Helpful guides

Finance GuidesHow Loan and EMI Calculations WorkRead guide

Continue your workflow

Open a related tool to prepare your files or refine the finished result.