
Although personal loans are a great way of financing immediate fund requirements, it is less likely that individuals notice that unsecured loans have a higher interest rate in comparison to secured loans. Nevertheless, personal loans are considered one of the most convenient borrowing options due to the instant approval and quick disbursals offered.
Let us understand the different types of personal loan interest rates and which one is ideal to adopt.
What is a personal loan interest rate?
The type of personal loan interest is one of the important factors considered by individuals when availing themselves of a loan. Apart from this, facilities such as pre-closure options and part-payments are also important considerations for borrowers.
An interest rate is the rate at which the lender offers the loan amount. In simple terms, the total interest paid over the loan tenure is the lender's income for providing the loan.
Personal Loan Interest Types
There are two primary personal loan interest types:
What is a flat interest rate?
Under this system, the interest rate on the loan amount is fixed and remains constant throughout the loan tenure. The interest is calculated on the original principal amount for the entire tenure, irrespective of how much of the loan has already been repaid.
Flat Rate vs Reducing Balance Interest Rate
| Parameter | Flat Interest Rate | Reducing Balance Interest Rate |
|---|---|---|
| Interest Calculation | Calculated on the original loan amount throughout the tenure | Calculated on the outstanding principal balance |
| Interest Amount | Remains constant | Reduces as the principal reduces |
| EMI Structure | Fixed based on full principal | Fixed EMI but interest portion reduces over time |
| Total Interest Cost | Usually higher | Usually lower |
| Transparency | Easier to understand | More accurate representation of borrowing cost |
| Common Usage | Less common for personal loans | Widely used for personal loans |
Example: ₹1 Lakh Loan at 12% for 12 Months
Let us compare how interest works under both methods using the same loan:
- Loan Amount: ₹1,00,000
Interest Rate: 12% per annum- Tenure: 12 months
Flat Interest Method
Interest is calculated on ₹1,00,000 throughout the year.
Annual Interest = ₹1,00,000 × 12% = ₹12,000
Total Repayment = ₹1,12,000
Monthly Interest Component = ₹1,000
| Month | Principal Considered | Interest Charged |
|---|---|---|
| 1 | ₹1,00,000 | ₹1,000 |
| 2 | ₹1,00,000 | ₹1,000 |
| 3 | ₹1,00,000 | ₹1,000 |
| ... | ... | ... |
| 12 | ₹1,00,000 | ₹1,000 |
Total Interest Paid = ₹12,000
What is a reducing balance interest rate?
The reducing balance method calculates interest only on the outstanding principal amount. As you repay your EMI every month, the principal balance reduces, and the interest for the following month is calculated on this lower amount.
Using the same ₹1 lakh loan at 12% for 12 months:
| Month | Approx Outstanding Principal | Monthly Interest |
|---|---|---|
| 1 | ₹1,00,000 | ₹1,000 |
| 2 | ₹92,115 | ₹921 |
| 3 | ₹84,151 | ₹842 |
| 4 | ₹76,108 | ₹761 |
| 5 | ₹67,985 | ₹680 |
| 6 | ₹59,781 | ₹598 |
| 7 | ₹51,495 | ₹515 |
| 8 | ₹43,126 | ₹431 |
| 9 | ₹34,674 | ₹347 |
| 10 | ₹26,136 | ₹261 |
| 11 | ₹17,514 | ₹175 |
| 12 | ₹8,804 | ₹88 |
Total interest paid under the reducing balance method is significantly lower than the ₹12,000 charged under the flat rate method because the interest keeps reducing as the outstanding loan amount decreases.
This is why most borrowers prefer reducing balance interest rates, as they reflect the actual outstanding debt rather than the original loan amount.
Factors that affect Personal Loan Interest Rates
There are several factors that affect personal loan interest rates. Although this can vary based on your lender, here are the most common factors:
- Credit score A credit score of 750 or above gives you a negotiation power to reduce your interest rate.
- Monthly Income The monthly source of income earned by the individual is another important factor taken into consideration.
- Employer Working in a reputed or well-known organisation can give you an edge in getting a low-interest personal loan.
- Applicant Age The age of the applicant also matters. Individuals who are close to retirement will probably be charged higher interest rates.
- Relationship with the lender This is another way to impact your personal loan interest type and rate. Existing relationships with the financial institution can make your loan sanction process a cakewalk.
Although the interest rate is the source of income for the lender to offer you the loan amount, it is a cost for the borrower. Hence, it is recommended to carry in-depth research before you finalize a lender.
Factors that Affect Personal Loan Interest Rates
There are several factors that affect personal loan interest rates. Although this can vary based on your lender, here are the most common factors:
Credit Score
A credit score of 750 or above gives you greater negotiating power and may help you secure a lower interest rate.
Monthly Income
The monthly income earned by the individual is another important factor taken into consideration while determining the interest rate.
Employer Profile
Working in a reputed or well-known organisation can give you an advantage in obtaining a lower interest rate.
Applicant Age
The age of the applicant also matters. Individuals who are close to retirement may be charged higher interest rates due to perceived repayment risk.
Relationship with the Lender
An existing banking relationship with the financial institution can improve the chances of loan approval and may also help in obtaining better loan terms.
Which Interest Method Does Aditya Birla Capital Use?
Aditya Birla Capital personal loans are offered on a reducing balance interest rate basis, where interest is calculated on the outstanding principal amount rather than the original loan amount.
Personal Loan EMI Calculator
Before applying for a personal loan, it is advisable to estimate your monthly repayment obligations using a personal loan EMI calculator. The calculator helps you understand how changes in loan amount, interest rate, and tenure affect your EMI and overall borrowing cost.
Conclusion
Although the interest rate is the lender's income for providing the loan, it is a cost for the borrower. Therefore, it is important to understand how different interest calculation methods work before selecting a loan.
In most cases, reducing balance interest rates are more borrower-friendly because interest is charged only on the outstanding loan amount. Before finalising a loan, compare interest rates, repayment terms, and other charges carefully to make an informed borrowing decision.
You can also check the latest Aditya Birla Capital personal loan interest rates and use the personal loan EMI calculator to evaluate your repayment obligations before applying.
The information contained herein is generic in nature and is meant for educational purposes only. Nothing here is to be construed as an investment or financial or taxation advice nor to be considered as an invitation or solicitation or advertisement for any financial product. Readers are advised to exercise discretion and should seek independent professional advice prior to making any investment decision in relation to any financial product. Aditya Birla Capital Group is not liable for any decision arising out of the use of this information.

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