Flat vs. Reducing Rate Loan Calculator

Compare loan interest methods without logging in. See the actual cost difference instantly. No account, no sign-up needed at all.

Loan Details

10,00,000
10.0 %
5 Years

Comparison Summary

Flat Rate Loan

0 EMI

Total: 0

Reducing Rate Loan

0 EMI

Total: 0

Savings with Reducing Rate

0

Detailed Breakdown

Metric Flat Rate Reducing Balance
Monthly Payment (EMI) 0 0
Total Interest Payable 0 0
Total Amount Payable 0 0
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Step-by-Step Guide

Compare Flat vs Reducing Rates in 4 Easy Steps

Find the true interest differences and see why reducing balance rates are cheaper than flat interest rates.

1
Input Loan Parameters

Enter the principal loan sum and the tenure (repayment duration) in months or years.

Principal Sum Repayment Duration
2
Specify Flat Rate

Input the flat annual interest rate percentage quoted by banks or loan agents.

Flat Annual Rate Quoted Percentage Fixed Base Calculation
3
Specify Reducing Rate

Enter the alternative reducing balance annual rate to compare the two structures side-by-side.

Reducing Balance Rate Equivalent Rate Diminishing Principal
4
Compare Interest

Analyze the total interest paid under both options, the EMI difference, and the net savings.

Interest Gap Comparison Equivalent Rate Yield
Local comparing sandbox
No mortgage parameters saved
100% Secure offline processing
Loan Planners

Expose Deceptive Loan Interest Structures

Compare total repayment plans side by side and calculate equivalent reducing rates instantly.

Side-by-Side Comparison

Direct comparison grid displays flat interest EMI and reducing balance EMI together, highlighting the interest savings.

Equivalent Reducing Rate

Calculates the true reducing balance rate that matches a quoted flat rate, exposing the actual borrowing costs.

Total Savings Display

Shows the exact money kept in your pocket when choosing a reducing balance loan structure over a flat rate.

Interactive Sensitivity

Slide loan amounts and tenures to see how longer periods exponentially increase the premium of flat interest.

Avoid hidden fees and misleading banking traps
Safe local client-side comparisons protect secrets
Accurate formulas modeled on bank regulations
FAQ

Common Questions

Learn more about equivalent rates, banking terminology, reducing balances, and loan terms.

What is a flat interest rate?
A flat interest rate calculates interest on the original loan principal throughout the entire tenure. The interest amount does not change, regardless of how much principal you have repaid.
What is a reducing interest rate?
A reducing (or diminishing) interest rate calculates interest only on the remaining outstanding principal balance. As you pay off the principal month by month, the interest portion of your EMI decreases.
Why does a flat interest rate seem lower than a reducing rate?
Lenders quote flat rates (e.g., 6% flat) because the number sounds lower and more attractive. However, because you pay interest on the full amount even when 90% is repaid, the equivalent reducing rate is actually about 10.5% to 11%.
How do I calculate the equivalent reducing rate from a flat rate?
As a rule of thumb, the equivalent reducing balance rate is approximately 1.7 to 1.9 times the flat interest rate depending on the tenure. Our calculator uses precise time-value-of-money formulas to find the exact percentage.
Which loan structure should I choose?
You should always compare the total interest paid in currency rather than interest percentages. In almost all commercial lending scenarios, a reducing balance loan with the same or lower equivalent rate will cost you far less overall.