How to Calculate Monthly EMI for a Personal Loan: Formula, Examples, and Tips
Taking a personal loan can help you manage unexpected expenses, consolidate existing debt, pay for a wedding, or cover medical and educational costs. However, before applying for a loan, it is important to understand how much you will need to repay every month. Learning how to calculate monthly EMI for a personal loan helps you estimate your monthly financial commitment, compare loan offers, and choose a repayment period that fits your budget.
Your personal loan EMI, or Equated Monthly Instalment, is the fixed monthly payment you make toward repaying the borrowed amount and interest. The EMI depends mainly on the loan amount, interest rate, and repayment tenure. Even a small difference in the interest rate or loan term can affect your monthly payment and the total cost of borrowing.
In this guide, you will learn the personal loan EMI formula, how to calculate EMI step by step, practical examples, and how to use an EMI calculator. You will also discover ways to reduce your repayment costs and avoid common borrowing mistakes.
What Is EMI in a Personal Loan?
EMI stands for Equated Monthly Instalment. It is the amount you pay to your lender every month until your personal loan is fully repaid.
A typical personal loan EMI includes two components:
- Principal repayment: The portion that reduces the original amount you borrowed.
- Interest payment: The amount charged by the lender for providing the loan.
For most personal loans with a fixed interest rate and a standard reducing-balance repayment schedule, the EMI remains the same throughout the loan tenure. However, the proportion of principal and interest within each payment changes over time.
At the beginning of the repayment period, a larger share of your EMI generally goes toward interest. As the outstanding principal decreases, more of each payment goes toward repaying the principal.
For example, if you borrow ₹3,00,000 for three years at an annual interest rate of 12%, your EMI will be approximately ₹9,964 per month. Your actual EMI may differ slightly because of lender-specific calculations, rounding, fees, or repayment dates.
How to Calculate Monthly EMI for a Personal Loan
The most common way to calculate a personal loan EMI is by using the standard reducing-balance EMI formula.
Personal Loan EMI Formula
The formula is:
EMI = P × R × (1 + R)N ÷ [(1 + R)N − 1]
Where:
- P = Principal loan amount, or the amount borrowed
- R = Monthly interest rate expressed as a decimal
- N = Total number of monthly instalments
- EMI = Equated Monthly Instalment
To use this formula correctly, you need to convert the annual interest rate into a monthly interest rate and express the loan tenure in months.
Step 1: Identify the Loan Amount
The principal is the total amount you borrow from the lender.
For example, if you take a personal loan of ₹5,00,000, your principal amount is ₹5,00,000.
Use the amount on which interest is calculated. If processing fees are deducted from the disbursement, the amount you receive in your bank account may be lower than the principal you are required to repay.
Step 2: Convert the Annual Interest Rate Into a Monthly Rate
Personal loan interest rates are usually advertised annually. The EMI formula requires a monthly interest rate.
Divide the annual interest rate by 12 and then by 100.
Monthly interest rate = Annual interest rate ÷ 12 ÷ 100
For example, if your annual interest rate is 12%:
12 ÷ 12 ÷ 100 = 0.01
Therefore, the monthly interest rate is 0.01, or 1% per month.
If your lender quotes an annual interest rate of 15%, the monthly rate for the standard EMI formula is:
15 ÷ 12 ÷ 100 = 0.0125
That equals 1.25% per month.
Step 3: Convert the Loan Tenure Into Months
The loan tenure is the period over which you agree to repay the loan.
If the repayment period is three years, the total number of monthly instalments is:
3 × 12 = 36 months
Similarly:
- 1 year = 12 months
- 2 years = 24 months
- 4 years = 48 months
- 5 years = 60 months
Always use the actual repayment tenure specified in your loan agreement.
Step 4: Apply the EMI Formula
Suppose you borrow ₹3,00,000 at an annual interest rate of 12% for three years.
Your values are:
- Principal (P) = ₹3,00,000
- Monthly interest rate (R) = 0.01
- Loan tenure (N) = 36 months
The formula becomes:
EMI = 3,00,000 × 0.01 × (1.01)36 ÷ [(1.01)36 − 1]
After calculation, the monthly EMI is approximately ₹9,964.
This means you would pay around ₹9,964 every month for 36 months, assuming a standard reducing-balance loan with a fixed interest rate and no additional amounts included in the instalment.
Personal Loan EMI Calculation Example
Let's calculate the monthly EMI for a larger loan to understand how the formula works in a practical situation.
Suppose you want to borrow ₹5,00,000 for home repairs.
| Loan detail | Value |
|---|---|
| Loan amount | ₹5,00,000 |
| Annual interest rate | 12% |
| Monthly interest rate | 1% |
| Repayment tenure | 5 years |
| Total monthly instalments | 60 |
| Estimated monthly EMI | ₹11,122 |
| Total repayment | ₹6,67,320 |
| Total interest | ₹1,67,320 |
Figures are approximate and may vary slightly due to rounding and lender-specific calculations.
How Is the Total Interest Calculated?
Once you know the EMI, you can estimate the total amount you will repay.
Total repayment = Monthly EMI × Number of instalments
Using the example above:
₹11,122 × 60 = ₹6,67,320
Next, subtract the original principal to calculate the total interest.
Total interest = Total repayment − Principal
₹6,67,320 − ₹5,00,000 = ₹1,67,320
This example shows why it is important to consider both the monthly EMI and the total interest cost before accepting a personal loan offer.
A lower monthly payment may appear attractive, but a longer repayment period can increase the total interest you pay.