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Loan amortization is the process of paying off a loan over time through fixed monthly payments. Each payment is split into two parts: interest and principal.
At the beginning of the loan, a larger portion of your payment goes toward interest. As time passes, more of your payment is applied to the principal balance.
This gradual shift is what makes amortization important—it shows how your debt actually decreases over time.
Every month, your payment follows a structured formula based on your loan amount, interest rate (APR), and loan term.
Early payments mostly cover interest, while later payments reduce the loan balance much faster.
Monthly payment is calculated using:
Payment = Loan × (r × (1 + r)n) / ((1 + r)n − 1)
Let’s say you borrow $10,000 with a 6% annual interest rate for 24 months.
In the first months, most of your payment goes toward interest. Toward the end, almost all of it goes toward reducing the principal.
Without amortization, you only see the payment—but not the real cost.
The calculator will show your monthly payment, total interest, and a breakdown of your loan over time.
An amortization schedule is a table that shows each payment over time, including how much goes toward interest and how much reduces the principal balance.
Interest is calculated based on your remaining loan balance. At the beginning, your balance is highest, so a larger portion of your payment goes toward interest.
Yes. You can reduce interest by making extra payments, choosing a shorter loan term, or securing a lower interest rate.
Paying off your loan early reduces the total interest you pay, since interest is only charged on the remaining balance over time.
A longer loan term lowers your monthly payment but increases total interest paid. A shorter term means higher payments but less total cost.
The interest rate is the cost of borrowing, while APR includes additional fees and gives a more accurate representation of the total loan cost.
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