Money Debt Calculator
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Reviewed by Calculator Editorial Team
This money debt calculator helps you determine your monthly payments, total interest paid, and payoff timeline for a loan or debt. Simply enter your loan amount, interest rate, and loan term to get a clear repayment plan.
How to Use This Calculator
Using our money debt calculator is simple:
- Enter the principal amount (the initial amount of debt)
- Input the annual interest rate (APR)
- Specify the loan term in years
- Click "Calculate" to see your monthly payment and other details
The calculator will show you your monthly payment amount, total interest paid over the life of the loan, and the total amount paid including principal and interest.
Note: This calculator assumes fixed monthly payments and does not account for prepayment penalties or variable interest rates.
Formula Used
The monthly payment (PMT) for a loan is calculated using the following formula:
Monthly Payment Formula
PMT = P × [r(1 + r)^n] / [(1 + r)^n - 1]
Where:
- P = principal loan amount
- r = monthly interest rate (annual rate divided by 12)
- n = number of payments (loan term in years × 12)
Total interest paid is calculated by subtracting the principal from the total amount paid.
Worked Example
Let's calculate a $10,000 loan at 5% annual interest for 5 years:
Example Calculation
Principal (P) = $10,000
Annual Interest Rate = 5% (0.05)
Loan Term = 5 years
Monthly Interest Rate (r) = 0.05 / 12 ≈ 0.004167
Number of Payments (n) = 5 × 12 = 60
Monthly Payment = $10,000 × [0.004167(1 + 0.004167)^60] / [(1 + 0.004167)^60 - 1] ≈ $188.70
Total Amount Paid = $188.70 × 60 ≈ $11,322.00
Total Interest Paid = $11,322.00 - $10,000 = $1,322.00
This example shows that over 5 years, you would pay $188.70 per month, totaling $11,322.00 with $1,322.00 in interest.
Interpreting Results
When using the money debt calculator, consider these key points:
- The monthly payment amount is fixed for the life of the loan
- Most of your payments go toward interest in the early years
- As you pay down the principal, more of each payment goes toward the principal
- Lower interest rates and shorter loan terms reduce your total interest costs
| Loan Term | Monthly Payment | Total Interest |
|---|---|---|
| 5 years | $188.70 | $1,322.00 |
| 10 years | $106.07 | $2,728.40 |
| 15 years | $79.52 | $3,528.30 |
This table shows how extending the loan term from 5 to 15 years reduces monthly payments but increases total interest paid.
Frequently Asked Questions
What is the difference between APR and interest rate?
APR (Annual Percentage Rate) is the total annual cost of borrowing, including fees and interest. The interest rate is the portion of APR that represents the actual cost of borrowing. APR is always higher than the interest rate.
How does prepayment affect my loan?
Prepayment can reduce your total interest costs by shortening the loan term. However, some loans have prepayment penalties. Check your loan agreement before making extra payments.
What is the break-even point for debt?
The break-even point is the point at which the interest you pay equals the interest you would earn if you invested the money instead. For example, if your interest rate is 5% and you could earn 6% on investments, you should pay off the debt.