Loan Calculator

Monthly payments use the standard amortization formula where principal is multiplied by the monthly interest rate factor and divided by the compounding term. This produces a fixed payment covering both principal repayment and interest over the full loan duration.

The SVG line chart displays three trends across your loan term: the declining remaining balance (blue), cumulative principal paid (green dashed), and cumulative interest paid (orange dashed). The crossover point shows when you have paid more principal than interest.

Extra monthly payments go directly toward reducing principal, which lowers total interest over the loan life and shortens the payoff timeline. The calculator shows exactly how many months you save and the total interest reduction compared to standard payments.

Yes! All calculations happen entirely in your browser. Your financial data is never sent to any server. No data is collected, stored, or transmitted.

Yes. The loan comparison feature lets you set up two different loan scenarios with different amounts, rates, and terms. The calculator shows a side-by-side comparison highlighting the monthly payment difference and total interest savings.