Your father renews a fixed deposit every year and tells you the rate he is getting. He is happy with it. He has been happy with it for twenty years, and in all that time nobody has asked him the only question that matters: after tax, and after what prices did over the same year, did the money he got back actually buy more than the money he put in?
That question has an unglamorous answer, and it is the reason a deposit can feel safe while quietly losing ground.
Three different numbers
People discuss one number when there are three, and they run in a fixed order.
- The nominal rate is the rate on the receipt. It is the number your father quotes.
- The post-tax return is what is left after the tax on that interest. Interest is not paid to you free of tax; how it is taxed depends on the rules that apply to you.
- The real return is what is left after inflation. It answers the buying-power question, and it is the only one of the three that tells you whether you are ahead.
Each number is smaller than the one above it. Almost every conversation about deposits stops at the first.
An illustration, not a forecast
Take a deposit paying 7% a year, an investor whose interest is taxed at 30%, and inflation of 6% over the same year. Those three figures are assumptions chosen to show the arithmetic. They are not a prediction, a promise, or a claim about any current rate.
The 7% becomes roughly 4.9% after tax. Set 6% inflation against that 4.9% and the money has lost a little purchasing power over the year, despite the deposit having paid exactly what it said it would.
Now change one assumption. Run the same arithmetic for someone whose income is low enough that little or no tax applies to the interest, and the outcome flips to slightly positive. Same deposit, same bank, same year. This is the point: the deposit's rate is only one of three inputs, and the other two belong to you rather than to the bank.
What safety does and does not mean
A fixed deposit is genuinely dependable in one respect. It contracts to pay a stated rate, and the rupee amount you get back does not fluctuate with markets. That protection is real and there are jobs it does well — money you will need soon, money you cannot afford to see fall.
What it does not protect is the value of those rupees. Inflation acts on the certain outcome exactly as it acts on an uncertain one. Certainty about the number is not certainty about what the number will buy.
There is a second limit worth knowing. Bank deposits in India are insured by a government-backed scheme up to a ceiling per depositor per bank, not for the full amount you place. When this article was first written that ceiling was ₹1 lakh; it has since been revised upward, so look up the current figure rather than trusting either number. If you keep large sums in deposits, that is a reason to know the limit and how it is applied across accounts.
What to do with this
Nothing here says a deposit is a bad thing to own. It says the rate on the receipt is not your return, and that comparing that rate against anything else without first taking out tax and inflation is comparing two different quantities.
So when someone quotes a deposit rate, ask the next two questions. How is the interest taxed in your hands? And what is inflation doing to the same money over the same period? Tax rules on interest income have changed more than once and depend on your circumstances, so check the current position, or ask a qualified tax professional, rather than relying on a figure from an old article.
This article is general information for education only. It is not investment advice and does not take account of your circumstances. Investments in securities are subject to market risks; please read all related documents carefully before investing.
