A personal loan interest rate determines how much you pay as interest on the borrowed amount. The Equated Monthly Instalment (EMI) is the amount you repay to the lender every month towards the principal and interest.
Understanding how personal loan interest rate and EMI are calculated can help you estimate the cost of borrowing and plan your repayments.
What is a Personal Loan Interest Rate?
The personal loan interest rate is the percentage a lender charges on the loan amount. It may depend on factors such as your income, credit history, loan amount, and repayment tenure.
For example, if you borrow ₹5 lakh at an annual interest rate of 12%, the lender will charge interest on the outstanding loan amount as per the loan terms.
The personal loan interest rate is not the only cost of a loan. Check the processing fee and other applicable charges before accepting a loan.
How is Personal Loan Interest Calculated?
Personal loans generally use the reducing balance method. Under this method, interest is calculated on the outstanding principal.
As you pay your EMIs, the principal outstanding reduces. Therefore, the interest component can also reduce over the repayment period.
The basic formula for calculating monthly interest is:
Monthly Interest = Outstanding Principal × Monthly Interest Rate
For an annual interest rate, the monthly rate can be calculated by dividing the annual rate by 12.
For example, a 12% annual interest rate is equivalent to a monthly rate of 1%, subject to the lender’s calculation method.
How is Personal Loan EMI Calculated?
The EMI depends on three main factors:
- Loan amount
- Interest rate
- Loan tenure
The standard EMI formula is:
EMI = P × R × (1 + R)ⁿ / [(1 + R)ⁿ – 1]
Where:
- P = Principal loan amount
- R = Monthly interest rate
- N = Number of monthly instalments
The annual interest rate needs to be converted into a monthly rate before using the formula.
A personal loan app may also provide digital tools to help you check your estimated EMI.
Example of Personal Loan EMI Calculation
Suppose you take a personal loan of ₹5 lakh at an annual interest rate of 12% for 3 years.
The details would be:
- Principal = ₹5,00,000
- Annual interest rate = 12%
- Monthly interest rate = 1%
- Tenure = 36 months
Using the EMI formula, the monthly EMI would be approximately ₹16,607.
Over 36 months, the total repayment would be approximately ₹5.98 lakh. The difference between the total repayment and the principal represents the interest paid, excluding any additional applicable charges.
Actual EMI and total repayment may vary based on the lender’s calculation and loan terms.
How Does Tenure Affect EMI?
Loan tenure affects both your monthly EMI and the total interest paid.
A longer tenure generally reduces the monthly EMI because the repayment is spread over more months. However, you may pay more total interest over the loan period.
A shorter tenure can increase the monthly EMI but may reduce the total interest payable.
Therefore, consider your monthly budget and repayment capacity before selecting a loan tenure.
How Does Interest Rate Affect EMI?
A higher personal loan interest rate generally results in a higher EMI and greater total interest cost, assuming the loan amount and tenure remain the same.
For this reason, compare the interest rates offered by lenders before applying. Also check whether the quoted rate is reducing-balance based and understand the other charges applicable to the loan.
Use a Personal Loan EMI Calculator
You can also use a personal loan EMI calculator to estimate your monthly repayment. Enter the loan amount, interest rate, and tenure to get an estimated EMI.
An EMI calculator can help you:
- Compare different loan amounts
- Check how tenure affects your EMI
- Estimate the total interest payable
- Plan your monthly budget
- Compare different loan offers
However, the calculator provides an estimate. The actual EMI may depend on the final terms offered by the lender.
What Other Charges Should You Check?
Interest is not the only cost associated with a personal loan. Depending on the lender and loan agreement, you may also have to pay processing fees, late payment charges, prepayment or foreclosure charges, and other applicable fees.
Check these charges before accepting a loan offer. Also, check whether any fee is deducted from the sanctioned loan amount before disbursal.
Conclusion
Calculating the personal loan interest rate and EMI can help you understand the cost of borrowing. The EMI mainly depends on the loan amount, interest rate and repayment tenure. You can use the standard EMI formula or an online calculator to estimate your monthly repayment. JioFinance is a digital financial platform that provides access to various financial products and services. Final loan terms and approval are subject to the respective lender’s assessment.








