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Loan Calculator

Calculate monthly loan repayments, total interest costs, and payment summaries for personal, auto, and mortgage loans.

Loan Calculator Interactive Workspace

Client-side calculations and instant parameter controls are initializing. All processing occurs securely in your browser.

How to Use the Loan Calculator

  1. 1 Enter the loan borrowing amount.
  2. 2 Provide the lender annual interest percentage rate.
  3. 3 Specify the loan duration in years or months.
  4. 4 Get an instant breakdown of monthly payments, total interest, and total repayment amount.

Mathematical Formula & Principle

Monthly Payment = [P × r(1+r)^n] / [(1+r)^n − 1]

Calculations are performed with IEEE floating point mathematical precision directly in your device memory.

Worked Examples

5-Year Term Loan

Input: Principal: ₹500,000 | Rate: 8.5% | Tenure: 5 Years
Result: Monthly: ₹10,258 | Total Interest: ₹115,500

Total cost over 60 monthly payments is ₹615,500.

Short-Term Loan

Input: Principal: ₹100,000 | Rate: 10.5% | Tenure: 1 Year
Result: Monthly: ₹8,815 | Total Interest: ₹5,779

Short durations minimize total interest expense.

Frequently Asked Questions

How is total interest calculated on a loan?
Total interest equals the sum of all monthly payments minus the original principal loan amount borrowed.
Are processing fees included in this calculation?
No, this calculates pure interest amortization. Banks typically charge a 0.5% to 2% one-time loan processing fee.
Can I pay off my loan earlier to save interest?
Yes, making prepayments directly reduces the principal balance, saving interest and shortening your overall loan term.

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