Welcome
Book your free consultation!
Compare the true cost of a flat rate loan against a reducing balance loan. See why a lower flat rate can actually be more expensive.
Enter your loan amount, tenure, and both interest rates to compare
Enter your loan details and both rates to see which option is cheaper for you.
A flat rate is always higher than it appears.
Flat interest is charged on the full principal throughout.
The way interest is calculated makes a huge difference to the total cost of your loan. A flat rate charges interest on the entire principal for the full tenure, while a reducing rate charges interest only on the outstanding balance. This means a flat rate that looks lower can actually cost you more .
In a flat rate loan, interest is calculated on the entire principal amount for the entire loan tenure. It doesn't matter how much principal you've already repaid — you continue to pay interest on the original amount .
This method is commonly used by car dealers, consumer durable loans, and some personal loan providers because it makes the loan look cheaper than it actually is.
In a reducing rate loan, interest is calculated on the outstanding (remaining) principal balance. As you repay the principal, your interest burden reduces accordingly .
This is the standard method used by banks for home loans, most personal loans, and business loans. It is more transparent and almost always results in lower total interest for the same nominal rate.
| Parameter | Flat Rate @ 10% | Reducing Rate @ 15% |
|---|---|---|
| Loan Amount | ₹5,00,000 | ₹5,00,000 |
| Tenure | 5 Years | 5 Years |
| Monthly EMI | ₹12,500 | ₹11,895 |
| Total Interest | ₹2,50,000 | ₹2,13,689 |
| Total Payment | ₹7,50,000 | ₹7,13,689 |
Even though the flat rate (10%) looks much lower than the reducing rate (15%), the reducing rate loan actually costs ₹36,311 less in total interest. A flat rate of 10% is equivalent to a reducing rate of approximately 17-18% .
| Flat Rate | Approx. Reducing Rate (5 Yr) | Approx. Reducing Rate (3 Yr) |
|---|---|---|
| 8% | 14.5% | 14.0% |
| 10% | 17.5% | 17.0% |
| 12% | 21.0% | 20.5% |
| 15% | 26.5% | 25.5% |
Use this table as a quick reference. The exact reducing equivalent depends on the loan tenure — shorter tenures have a smaller gap between flat and reducing rates .
In a flat rate loan, interest is charged on the full principal throughout the tenure, even though you're gradually repaying the principal. In a reducing rate loan, interest is charged only on the outstanding balance. Since the outstanding balance decreases over time, the total interest is lower in a reducing rate loan .
There's no simple single formula, but as a rule of thumb, a flat rate of 10% for 5 years is approximately equal to a reducing rate of 17-18%. For 3 years, a flat rate of 10% is approximately equal to 17%. The exact equivalent depends on the tenure .
Flat rates are commonly used for car loans (especially dealer-arranged financing), consumer durable loans (electronics, appliances), gold loans, and some personal loans from NBFCs. Banks typically use reducing rates for home loans and most personal loans .
Yes, for the same nominal rate, a reducing rate loan is always cheaper. However, you should compare the actual reducing rate equivalent of any flat rate offer before deciding. Sometimes a flat rate offer with a very low rate (e.g., 7% flat) can still be competitive against a reducing rate loan .
No. In a flat rate loan, the EMI is calculated as (Principal + Total Interest) ÷ Number of Months. In a reducing rate loan, the EMI is calculated using the standard reducing balance formula. The flat rate EMI is usually higher for the same nominal rate because the total interest is higher .
Always ask the lender for the effective reducing rate (also called APR or annual percentage rate) of any loan offer. If they only quote a flat rate, use this calculator to find the equivalent reducing rate and compare it against other offers. Never compare a flat rate directly against a reducing rate .