Modify the values and click the Calculate button to use
| Item | Total |
|---|---|
| Loan Amount | $0.00 |
| Total of Payments | $0.00 |
| Total Interest | $0.00 |
| Number of Payments | 0 |
| Payoff Date | - |
Amortization Schedule
Understanding your loan estimate
A loan calculator translates an amount borrowed, interest rate, and repayment term into an estimated payment schedule. The monthly payment is important, but it should be reviewed together with total interest and the final payoff date. Two loans with similar payments can have very different total costs.
Enter the annual percentage rate or interest rate shown by the lender and confirm whether quoted fees are already included in the principal. Then test shorter and longer terms. A longer term usually lowers the required payment while keeping the balance outstanding longer.
How to use this calculator
- Enter the principal, which is the amount financed rather than the purchase price before a down payment.
- Enter the annual interest rate and choose the repayment period.
- Calculate the scheduled payment and review total principal plus total interest.
- Use an extra-payment scenario only if the loan allows prepayment without a penalty.
How the calculation works
An amortizing payment is commonly calculated as M = P x [r(1+r)^n] / [(1+r)^n - 1]. P is principal, r is the periodic interest rate, and n is the number of payments. When the rate is zero, the payment is simply principal divided by the number of payments.
A practical example
For a $20,000 loan at 8% repaid over five years, the estimated monthly payment is about $406. Over 60 payments, the borrower pays roughly $24,332 in total, including about $4,332 of interest. A shorter term raises the monthly payment but can reduce the interest expense.
How to use the result in a real decision
Use the result to compare written offers on equal terms. Keep the principal and repayment period consistent, then change the rate and fees to see which offer has the lower total cost. If a proposed payment is affordable only with a very long term, consider borrowing less or waiting. The strongest comparison includes payment, total interest, fees, flexibility for early repayment, and the effect the obligation will have on emergency savings.
Ways to make the estimate more useful
- Compare total cost, not only the advertised monthly payment.
- Check whether origination fees are deducted from proceeds or added to the balance.
- Confirm whether the rate is fixed or can change later.
- Leave room in the budget for insurance, taxes, and other obligations not included in the loan.
Frequently asked questions
What is loan principal?
Principal is the unpaid amount borrowed. Interest is the cost charged for using that money.
Why does a longer loan cost more?
The balance remains outstanding for more time, so interest can be charged across more payment periods.
Can I use this for any loan?
It is best for standard fixed-rate amortizing loans. Credit cards, interest-only loans, and variable-rate products need different assumptions.
NumbersHub educational guide. Review calculator assumptions before relying on an estimate.