Estimate the monthly payment, total interest, and total repayment for a $20,000 loan.
Adjust the amount, rate, or term and the results update instantly.
A month-by-month breakdown of principal, interest, and remaining balance.
| # | Payment | Principal | Interest | Balance |
|---|
Amounts are rounded to the nearest cent. The final payment may differ slightly to fully clear the balance.
This $20,000 loan calculator helps you estimate the true cost of borrowing before you sign. Enter your loan amount, annual interest rate, and term in years, and the calculator instantly shows your monthly payment, total interest, and total repayment amount. A detailed amortization schedule breaks every payment into principal and interest, so you can see exactly how much goes toward the loan balance each month and how the balance shrinks over time. Understanding these numbers makes it easier to compare loan offers, choose a term that fits your budget, and decide whether a shorter loan with higher payments is worth the interest savings. All calculations run 100% in your browser. Your loan details are never uploaded, transmitted, or stored on any server, so your financial information stays private. This tool is for planning and education only and does not constitute financial advice.
The calculator uses the standard amortization formula: M = P × r × (1 + r)^n / ((1 + r)^n − 1), where P is the loan principal, r is the monthly interest rate (annual rate divided by 12), and n is the number of monthly payments. If the interest rate is zero, the payment is simply the principal divided by the number of months.
Total interest is the sum of every interest payment you will make over the life of the loan. It equals the total repayment amount minus the original principal. A longer term usually lowers the monthly payment but increases total interest.
Many lenders allow early repayment, which can significantly reduce total interest because you avoid future interest charges. However, some loans include prepayment penalties or origination fees. Always check your loan agreement before making extra payments.
A fixed rate stays the same for the entire loan term, so your monthly payment is predictable. A variable rate can change over time based on market conditions, which may lower or raise your payments. This calculator assumes a fixed rate.
Yes. The calculator is completely free, requires no account, and runs 100% in your browser. Your loan amount, interest rate, and term are never uploaded, transmitted, or stored on any server.