What is Flat Rate vs Reducing Rate Calculator?
Compare flat interest rate vs reducing balance rate and find the true effective interest rate on any loan Simply enter your values, and the calculator instantly computes accurate results using standard financial formulas. All calculations are performed entirely in your browser — nothing is stored or transmitted.
Formula Used
Flat rate calculates interest on original principal throughout. Reducing rate calculates interest on outstanding balance. A 10% flat rate is approximately equivalent to 18% reducing rate — making flat rates misleading.
How to Use This Calculator
- Enter the loan principal amount
- Enter either the flat rate or reducing rate as offered
- Enter loan tenure in months
- Click Calculate to see EMI under both methods
- See the equivalent reducing rate for any flat rate quoted
Worked Example
Loan: ₹2,00,000 | Flat Rate: 10% | 24 months → Flat EMI: ₹10,000 | Reducing Rate EMI at 18.03%: ₹10,000 | Flat 10% = Reducing 18.03%!
Why Use This Tool?
- Unmask misleading flat rate loans
- Find the true cost of microfinance and cooperative loans
- Compare apples-to-apples across different loan offers
- Negotiate with lenders using effective rate knowledge
Frequently Asked Questions
What is the difference between flat rate and reducing rate?
Flat rate calculates interest on the original loan amount throughout the tenure. Reducing (diminishing) rate calculates interest only on the outstanding principal, which decreases with each EMI. A flat rate loan is significantly more expensive despite a lower-looking rate.
Which loans use flat rate?
Flat rates are commonly used by microfinance institutions, cooperative banks, some two-wheeler and consumer durable loans, and informal lenders. Formal banks predominantly use reducing balance rates. Always ask which method applies before taking any loan.
How to convert flat rate to effective reducing rate?
A rough approximation: Effective Rate ≈ Flat Rate × 1.83. A more precise conversion uses the EMI formula iteratively. For example, 10% flat ≈ 18.3% reducing rate, and 12% flat ≈ 21.5% reducing rate. Always use this calculator for exact conversion.
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