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Debt Calculator

Finance
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Calculates the total finance charge and repayment details for a debt, such as a loan or credit card balance, given the principal amount, interest rate, and loan term.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Principal Amount ($), Annual Interest Rate (%), and Loan Term (Years) in the units shown.

Step 2

Read Number of Payments, Monthly Interest Rate, Monthly Payment ($), Total Paid ($), and Total Interest Paid ($) in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

Example calculations

See the inputs and their calculated results.

Small Loan

Principal Amount ($): 5,000; Annual Interest Rate (%): 4; Loan Term (Years): 3

Number of Payments: 36; Monthly Interest Rate: 0.003333333333; Monthly Payment ($): 147.619925; Total Paid ($): 5,314.317301; Total Interest Paid ($): 314.3173012

Typical Loan

Principal Amount ($): 20,000; Annual Interest Rate (%): 5; Loan Term (Years): 5

Number of Payments: 60; Monthly Interest Rate: 0.004166666667; Monthly Payment ($): 377.4246729; Total Paid ($): 22,645.48037; Total Interest Paid ($): 2,645.480373

Longer Term

Principal Amount ($): 50,000; Annual Interest Rate (%): 6; Loan Term (Years): 10

Number of Payments: 120; Monthly Interest Rate: 0.005; Monthly Payment ($): 555.1025097; Total Paid ($): 66,612.30116; Total Interest Paid ($): 16,612.30116

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Important

Treat this output as a planning estimate and confirm rates, tax rules, and contract terms before making financial decisions.