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EMI Calculator

Calculate monthly EMI, total interest, total payment, processing fee, total cost, and amortization summary.

Enter the annual interest rate as a percentage.

Optional. Enter a percentage or fixed fee depending on the selected fee type.

Reserved for a future prepayment calculator extension.

Status: initial

Results

Awaiting calculation

Finance guide

Introduction

An EMI calculator estimates the fixed monthly payment needed to repay a loan over a selected tenure. It helps compare loan amounts, rates, tenures, and processing fees before making a borrowing decision.

Purpose

Use this calculator to estimate monthly EMI, total interest, total repayment, processing fee, total cost, and a yearly amortization summary for home loans, car loans, personal loans, education loans, business loans, consumer durable purchases, and credit card EMIs.

EMI formula

The standard EMI formula uses principal, monthly interest rate, and tenure in months. If the annual interest rate is zero, EMI is calculated as principal divided by the number of months.

Variable explanations

Loan amount

The principal amount borrowed before interest and fees.

Annual interest rate

The yearly rate converted to a monthly rate for EMI calculation.

Tenure

The repayment duration entered in years or months and converted to total months.

Formula guide

Standard EMI

EMI = P x r x (1 + r)^n / ((1 + r)^n - 1)

  • P is principal.
  • r is monthly interest rate.
  • n is tenure in months.

This formula estimates the fixed monthly payment for a reducing-balance loan.

Zero-interest EMI

EMI = P / n

  • P is principal.
  • n is tenure in months.

When interest is zero, the loan is divided evenly across the selected months.

Total interest

Total interest = EMI x n - P

  • EMI is monthly payment.
  • n is tenure in months.
  • P is principal.

Total interest shows how much is paid above the borrowed principal before processing fees.

Processing fee and total cost

Total cost = total payment + processing fee

  • Processing fee can be a percentage or fixed amount.

Processing fee is added separately so borrowers can compare repayment and upfront costs.

Real-world examples

Home loan EMI

  1. Enter loan amount as 10,00,000.
  2. Enter interest as 8.5%.
  3. Enter tenure as 10 years.
  4. Review EMI, interest, total payment, and amortization.

Car loan EMI

  1. Enter car loan amount.
  2. Use the offered annual rate.
  3. Enter tenure in years or months.
  4. Compare EMI against monthly budget.

Personal loan EMI

  1. Enter principal.
  2. Enter rate and tenure.
  3. Add processing fee if known.
  4. Review total cost including fee.

Education loan EMI

  1. Enter expected loan amount.
  2. Enter rate.
  3. Use tenure in years.
  4. Check long-term interest impact.

Business loan EMI

  1. Enter working-capital or equipment loan amount.
  2. Enter rate and tenure.
  3. Review cash-flow impact.

Consumer durable EMI

  1. Enter purchase amount.
  2. Use zero interest if applicable.
  3. Enter tenure in months.
  4. Check monthly payment.

Credit card EMI

  1. Enter converted purchase amount.
  2. Enter annualized rate.
  3. Enter months.
  4. Review total interest and repayment.

Common EMI mistakes

Ignoring total interest

A lower EMI from a longer tenure can increase the total interest paid.

Comparing EMI without fees

Processing fees and other charges can change the true cost of a loan.

Using annual rate as monthly rate

The EMI formula uses monthly interest rate, which is annual rate divided by 12.

Choosing tenure only by affordability

Longer tenure may improve cash flow but can increase total repayment substantially.

Assuming prepayment is included

This version includes a prepayment placeholder only. Detailed prepayment impact is a future extension.

FAQs

What is EMI?
EMI stands for equated monthly instalment, the fixed monthly payment made toward a loan.
What is the EMI formula?
EMI = P x r x (1 + r)^n / ((1 + r)^n - 1), where P is principal, r is monthly rate, and n is months.
How is monthly interest rate calculated?
Monthly interest rate is the annual interest rate divided by 12 and then divided by 100.
What happens when interest rate is 0?
The EMI is principal divided by tenure in months.
Can I enter tenure in months?
Yes. Choose Months as the tenure type and enter the number of months.
Can I enter tenure in years?
Yes. Choose Years and the calculator converts tenure to months.
What is total interest payable?
Total interest is total payment minus principal.
What is total payment?
Total payment is monthly EMI multiplied by the number of months.
What is total cost?
Total cost is total payment plus any processing fee entered.
Can processing fee be a percentage?
Yes. Select Percentage and enter the processing fee rate.
Can processing fee be a fixed amount?
Yes. Select Fixed amount and enter the fee amount.
Does EMI include prepayment?
No. Prepayment is reserved as a future extension.
What is amortization?
Amortization shows how each payment is split between principal and interest over time.
Why does interest reduce over time?
For reducing-balance loans, interest is calculated on the remaining balance, which falls as principal is repaid.
Are formulas calculated in the page component?
No. The page renders a registered calculator specification and the Formula Engine performs the calculation.

References

Related calculators

  • Loan Calculator
  • Simple Interest Calculator
  • Compound Interest Calculator
  • Mortgage Calculator
  • Personal Loan Calculator
  • Home Loan Calculator
  • Car Loan Calculator
  • SIP Calculator

Last updated and version history

Last updated: 2026-07-03

  • 1.0.0 (2026-07-03): Initial CAL-0005 EMI Calculator implementation using platform engines.