Question
What is an amortization schedule?
An amortization schedule is a payment-by-payment breakdown showing how much of each loan payment goes to interest, how much goes to principal, and how the remaining balance changes over time.
Financial
Use OmniCalc's amortization calculator to estimate fixed-payment schedules, total interest, and principal payoff across the life of a loan.
Amortization calculator
Estimate a fixed-payment loan schedule and understand how principal and interest shift over time.
Why this result matters
A practical schedule tool for understanding how loan payments change over time. Use the tool above to enter a few clear inputs and get a practical answer you can use right away.
This amortization calculator helps you move beyond a single payment estimate and see how a loan actually behaves over time. It is useful for borrowers comparing repayment structures, homeowners reviewing long-term interest cost, and anyone who wants a clearer picture of when payments shift from interest-heavy to principal-heavy.
Formula and method
Amortization spreads a fixed-payment loan across repeated payments over time. Early payments usually contain more interest because the remaining balance is still high, while later payments shift more heavily toward principal as the balance falls.
Example
If you want to understand how a 15-year or 30-year loan actually pays down over time, this calculator helps you see the changing split between interest and principal more clearly.
FAQ
Short answers to the questions people often ask before or after using the tool.
Question
An amortization schedule is a payment-by-payment breakdown showing how much of each loan payment goes to interest, how much goes to principal, and how the remaining balance changes over time.
Question
A common approach uses the loan amount, interest rate, repayment term, and payment frequency to calculate a fixed payment, then applies that payment repeatedly while updating the remaining balance after each period.
Question
Interest is usually calculated from the remaining balance. Because the balance is highest at the start of the loan, the early payments devote more of the fixed payment to interest before the principal starts falling faster later on.
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