Most of us are familiar with the fact that high inflation is bad. It eats away at our purchasing power and makes everyday expenses harder to manage. But former RBI Governor Raghuram Rajan brought this idea to life through a simple and powerful analogy—Dosa Economics.
While falling interest rates often worry depositors—especially senior citizens—Rajan’s Dosa Economics explains why lower interest rates might actually be better for your real income. Let’s break it down.
The Role of RBI: Balancing Inflation and Growth
The Reserve Bank of India (RBI) has the challenging job of keeping inflation in check while ensuring GDP growth doesn’t slow down. One of the tools it uses is the repo rate—the rate at which RBI lends money to commercial banks.
- When inflation is high, RBI raises the repo rate to reduce liquidity and control prices.
- When GDP growth is sluggish, it lowers the repo rate to encourage borrowing and investment.
Repo rate changes directly impact Fixed Deposit (FD) interest rates. So when RBI cuts the repo rate, banks lower FD rates too—leading to concern among depositors.
But here’s where the concept of real interest rate (aka net return) becomes important.
Nominal vs. Real Interest Rates
- Nominal Interest Rate: The interest rate you see on FD ads. For example, 6% p.a.
- Real Interest Rate: This is the nominal rate minus the inflation rate.
If FD is giving 6% and inflation is 5%, your real return is 1%. But if FD is giving 9% and inflation is 10%, your real return is -1%. You’re actually losing money!
Why High FD Rates Aren’t Always a Good Thing
Let’s look at data from the past:
- 2007–2012 (Pre-Rajan era): FD rates were high (~8.5%), but so was inflation.
- 2013–2016 (Rajan’s term): FD rates started falling (~6.9%), but inflation also dropped.
At first glance, people felt they were earning less. But in reality, their real purchasing power improved, because inflation dropped faster than FD rates.
This is where Dosa Economics comes in—a story that simplifies a complex economic concept using… Dosas!
The Dosa Economics Analogy
Imagine a senior citizen with ₹1,00,000 in savings. The cost of one dosa is ₹50, so he can buy 2,000 dosas today.
Instead of spending, he puts his money in an FD.
Market #1: High Inflation, High Interest
- FD interest: 10%, so he earns ₹10,000 in a year.
- Inflation: 10%, so dosa price becomes ₹55.
- With ₹10,000, he can now buy 181 dosas (₹10,000/₹55).
Market #2: Low Inflation, Low Interest
- FD interest: 8%, so he earns ₹8,000.
- Inflation: 5.5%, so dosa price becomes ₹52.75.
- With ₹8,000, he can buy 151 dosas.
At first glance, Market #1 looks better—more dosas, right?
But here’s the catch…
The Fallacy of High Interest Rates
High interest rates often exist only because inflation is high. If inflation keeps rising, your real return may actually be negative.
In the example above:
- Market #1 has zero real return (10% – 10% = 0%)
- Market #2 has positive real return (8% – 5.5% = 2.5%)
So while Market #1 “feels” better, Market #2 is actually enhancing your purchasing power over time.
Why RBI Can’t Always Keep FD Rates High
While depositors might want higher FD rates, RBI can’t grant that wish without hurting GDP growth. High interest rates:
- Make loans expensive
- Reduce consumption and investment
- Slow down GDP growth
On the other hand, lower repo rates:
- Encourage borrowing
- Stimulate the economy
- But reduce FD interest income in the short term
This is the trade-off the RBI has to manage continuously.
How Should Investors Think About FD Rates?
If you’re someone who relies on FD interest, especially a senior citizen, it’s normal to worry about falling rates. But it’s important to:
- Look at real returns, not nominal returns
- Understand that lower inflation helps maintain or improve your purchasing power
- Know that low FD rates often signal economic revival, which benefits everyone in the long run
Conclusion: The Real Takeaway from Dosa Economics
The key message from Raghuram Rajan’s Dosa Economics is simple yet profound:
Focus on real returns, not just high interest rates.
Falling FD rates may hurt in the short term, but if inflation is also falling, your money could be doing more for you than you think. A healthy economy thrives on balanced inflation, stable growth, and positive real returns—not just eye-catching FD rates.
FAQs
Q: Why do FD rates fall when the economy is weak?
A: To boost growth, RBI reduces repo rates, which lowers borrowing costs but also reduces FD interest.
Q: Is a 10% FD rate always better than 6%?
A: Not necessarily. If inflation is 11%, your real return is -1% even with 10%. But if inflation is 4% and FD gives 6%, real return is +2%.
Q: What should investors focus on?
A: Real return = Nominal Interest Rate – Inflation Rate. That’s the actual growth of your purchasing power.
