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Composition of Loan Payments

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Any loan payment is a combination of principal and interest. As a loan is amortized by equal regular payments, later payments are comprised of more principal but less interest than earlier payments. The purpose of this calculator is to enable you to make a visual comparison of the interest/principal composition of any two payments.

Composition of Loan Payments Definitions

Loan amount
Total amount of the loan.
Payment for this loan.
Interest rate
Annual interest rate for this loan. Interest is calculated each period on the current outstanding balance of the loan. The periodic rate is the annual rate divided by the number of periods per year.
Number of payments
Number of payments for this loan.
Payment frequency
Choose how often payments will be made. The options are weekly (52 payments per year), bi-weekly (26 payments per year), semi-monthly (24 payments per year), monthly (12 payments per year), bi-monthly (6 payments per year), quarterly (4 payments per year), semi-annual (2 payments per year), and annually (1 payment per year).