Advanced Loan Amortization

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Loan Details

Taxes, Insurance & Extras (PITI)

Calculations execute locally. Zero server uploads.

Monthly PITI Payment

$0.00

P&I Only: $0.00

Total Interest Paid

$0.00

Actual Payoff Time

0 Yrs, 0 Mos

Amortization Trajectory

Balance
Total Interest

Amortization Schedule

Month Total Payment Principal Interest Total Interest Balance
How Amortization & PITI Math Works

Amortization is the process of spreading out a loan into a series of fixed payments. While the payment amount stays the same, the mathematical breakdown changes every single month.

The Interest-Heavy Start: Because interest is calculated against your remaining balance, your initial payments go almost entirely toward interest. As the balance slowly drops, an increasingly larger portion of your fixed payment goes toward the principal. This is clearly visible in the dynamic SVG chart above.

What is PITI? Real-world mortgages aren't just Principal and Interest (P&I). Lenders calculate PITI (Principal, Interest, Taxes, Insurance) to determine affordability. This engine divides your annual taxes and insurance by 12 and bundles them with any HOA fees to reflect your true cash outflow.

The Power of Extra Payments: Any extra money paid per month bypasses the interest calculation entirely and is deducted directly from the Principal balance. This creates a compounding effect, permanently lowering the interest generated in all subsequent months and radically accelerating your payoff date.

Zero-Trace Engineering: Generating a 360-month data table dynamically usually requires a server round-trip. We utilize a JavaScript DocumentFragment to calculate and render thousands of data points instantly in your device's RAM, ensuring your financial models remain completely private.