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Loan Amortization Schedule Calculator

Generate a detailed loan amortization schedule to see how your payments reduce your principal and interest over time. Understand your loan's breakdown with ease.

Enter the total amount borrowed.

The yearly interest rate of your loan.

How many years you have to repay the loan.

How it works

Generate a detailed loan amortization schedule to see how your payments reduce your principal and interest over time. Understand your loan's breakdown with ease.


The Formula
The core of an amortization schedule is the fixed periodic payment, calculated using the formula:
P = L [ i(1 + i)^n ] / [ (1 + i)^n – 1]
Where:
P = Monthly Payment
L = Loan Amount (Principal)
i = Monthly Interest Rate (Annual Rate / 12)
n = Total Number of Payments (Loan Term in Years * 12)

Worked Example
  1. Example: $20,000 Loan

    Imagine you take out a $20,000 loan at an annual interest rate of 5% for 5 years. Loan Amount (L) = $20,000 Annual Interest Rate = 5% (0.05) Loan Term = 5 years Monthly Interest Rate (i) = 0.05 / 12 = 0.0041666. Total Payments (n) = 5 * 12 = 60 Using the formula, the monthly payment (P) would be approximately $377.42. The calculator will show how each payment is split between principal and interest, and your remaining balance.


Tips, Assumptions & Limitations
  • Use this tool to compare different loan terms or interest rates before committing.
  • Remember that extra payments can significantly reduce your total interest paid and loan term.
  • This calculator assumes fixed payments and a fixed interest rate.
FAQ

An amortization schedule is a table detailing each periodic payment on an amortizing loan (typically a mortgage or car loan). It shows how much of each payment goes towards the principal balance and how much goes towards interest, along with the remaining balance after each payment.

Our calculator takes your loan amount, annual interest rate, and loan term in years. It then uses the standard loan payment formula to determine your fixed monthly payment. From there, it simulates each payment, calculating the interest portion (based on the current balance) and the principal portion, and updates the remaining balance.

This calculator is ideal for fixed-rate, fully amortizing loans like personal loans, car loans, and mortgages. It assumes consistent monthly payments and a fixed interest rate throughout the loan term. It's not suited for variable-rate loans, interest-only loans, or loans with irregular payment schedules.

In the early stages of an amortizing loan, a larger portion of your monthly payment goes towards interest. This is because the interest is calculated on a larger principal balance. As the principal balance decreases over time, a greater share of your payment can then be applied to reducing the principal.

Companion article

Loan Amortization Schedule Calculator: Understand Your Payments

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