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Finance Calculators

Loan Total Interest Calculator

Verified formula Updated Jun 2026 Private — runs on your device

Enter details
₹
%
20 years
1 years30 years
Verified formula Private

Total interest paid

₹46,37,369

Monthly EMI
₹35,989
Total amount paid
₹86,37,369

For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.

How to use the Loan Total Interest Calculator

The Loan Total Interest Calculator works out your total interest paid, along with 2 related figures in an instant. Enter loan amount, annual interest rate and loan tenure and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.

  1. Enter the loan amount.
  2. Enter the annual interest rate.
  3. Set the loan tenure.
  4. Read off your total interest paid, together with monthly emi and total amount paid — the calculator updates automatically, with no button to press.

Formula

The Loan Total Interest Calculator uses the formula:

Total interest paid = Loan amount × (Annual interest rate ÷ 100 ÷ 12) × (1 + Annual interest rate ÷ 100 ÷ 12)^(Loan tenure × 12) ÷ ((1 + Annual interest rate ÷ 100 ÷ 12)^(Loan tenure × 12) - 1) × Loan tenure × 12 - Loan amount

Worked example

For example, with loan amount of ₹4,000,000, annual interest rate of 9% and loan tenure of 20 years, the total interest paid is ₹46,37,369.

Inputs used
Loan amount ₹4,000,000
Annual interest rate 9%
Loan tenure 20 years
Results
Total interest paid ₹46,37,369
Monthly EMI ₹35,989
Total amount paid ₹86,37,369

Results are estimates for educational use, not professional advice.

Key terms explained

EMI
Equated Monthly Instalment — the fixed monthly payment on a loan covering both interest and principal.
Interest rate
The percentage charged on a loan or paid on savings, usually quoted per year (per annum).
Tenure
The length of time over which a loan is repaid or an investment is held.

Frequently asked questions

It is the total of all EMIs minus the principal. A 40,00,000 loan at 9% over 20 years costs roughly 46 lakh in interest.

Interest accrues on the outstanding balance every month, so a longer tenure means many more months of interest.

Choose a shorter tenure, make prepayments, or get a lower rate. Even small extra payments cut the total noticeably.

Yes. The figures assume the rate stays constant for the whole tenure. Floating-rate loans will differ as rates change.

The Loan Total Interest Calculator uses the formula: Total interest paid = Loan amount × (Annual interest rate ÷ 100 ÷ 12) × (1 + Annual interest rate ÷ 100 ÷ 12)^(Loan tenure × 12) ÷ ((1 + Annual interest rate ÷ 100 ÷ 12)^(Loan tenure × 12) - 1) × Loan tenure × 12 - Loan amount. For example, with loan amount of ₹4,000,000, annual interest rate of 9% and loan tenure of 20 years, the total interest paid is ₹46,37,369.

Enter the loan amount. Enter the annual interest rate. Set the loan tenure. Read off your total interest paid, together with monthly emi and total amount paid — the calculator updates automatically, with no button to press.

How Loan EMIs Work: A Complete Guide

Understand exactly how your loan EMI is calculated, why early payments are mostly interest, how tenure and rate change the total cost, and how prepayment saves you money — with worked examples.

4 min read

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