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User Manual – Advanced Loan Repayment Calculator

This calculator helps you explore different loan repayment scenarios so you can see how extra payments affect your payoff time and interest savings.

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Step 1: Enter Loan Details

• Loan Amount → The total borrowed (principal).
• Annual Interest Rate → Your mortgage/loan rate (e.g., 9%).
• Loan Term (years) → How long you’ll take to repay if you make only regular payments.
• Payment Frequency → Choose Monthly, Biweekly (26/year), or Weekly (52/year).
• Start Date → The first payment date. This projects your final payoff date.

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➕ Step 2: Add Extra Payments

• Extra per Period → A fixed amount you want to pay in addition to your scheduled payment.
• One-time Lump Sum → A larger single payment applied directly to the principal.

Even small extras per period can cut years off your loan and save significant interest.

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Step 3: Run the Calculator

1. Click Calculate.
2. The calculator shows:
   • Payment per Period (based on frequency).
   • Total Interest (with and without extras).
   • Payoff Time + projected date.
   • Interest Saved vs the base scenario.
   • A sparkline graph of principal balance over time.
   • Your first payment mix (interest vs principal).

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Step 4: Review the Amortization Schedule

Scroll down to see a full repayment schedule with:

• Period number
• Date
• Payment amount
• How much goes to Interest and Principal
• Any Extra applied
• Remaining Balance

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Step 5: Tools & Actions

• Reset → Clears all inputs.
• Share Settings → Generates a link to your current setup.
• Download Schedule (CSV) → Exports the amortization table to Excel.
• Print → Prints the results in a clean format.

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💡 Tips

• Try switching to biweekly payments — this alone often reduces payoff by years.
• Adding a small extra (e.g., JMD $5,000 per month) can save hundreds of thousands in interest.
• Use the lump sum input to test what happens if you make a big prepayment (bonus, inheritance, etc.).