Money basics — vocabulary in plain language

Sneha is twenty-two, in her first job in Indore, and reading the money pages of a newspaper for the first time. The article uses seven words she does not really know: SIP, NAV, yield, real return, risk-free rate, liquidity, EMI. She nods along. She does not stop.

That is the small moment that ends most people's financial education. The vocabulary is the gatekeeper. Until you actually know what these words mean — not roughly, not by the vibe, but cleanly — every other lesson will float past.

We are going to fix this in one sitting. Eight words, eight tight definitions, one Indian-context example each. By the end you should be able to read any finance article in any Indian newspaper without nodding past anything.

1. Time-value of money

₹100 today is worth more than ₹100 a year from now. This is the single most important idea in finance, and most adults still do not internalise it.

Why is today's rupee worth more? Three reasons:

• You can deploy it today (in a savings account, fixed deposit, SIP, business). It earns something while it waits.
• Inflation will erode tomorrow's rupee. The same ₹100 buys less next year than today.
• The future is uncertain. Money in your hand is yours; money promised to you next year may or may not arrive.

Every other concept in this lesson — interest, yield, inflation — is just a specific way of pricing time.

2. Interest

Interest is the price of using somebody else's money for some time. Whoever holds the money charges; whoever uses it pays.

When you keep ₹1 lakh in a savings account, the bank is borrowing from you. It pays you 3.5% per year of interest in return. When you take a ₹1 lakh personal loan, you are borrowing from the bank. You pay it 12% per year in interest.

The gap — 3.5% in, 12% out — is roughly how Indian banks make money. (It is called the net interest margin. Hold that word in mind for a future lesson.)

Two flavours, both with everyday consequences:

• Simple interest pays only on the original amount, year after year. ₹100 at 10% simple → ₹10 every year, forever.
• Compound interest pays on the new balance each year, so the interest itself starts earning interest. ₹100 at 10% compound → ₹10 in year one, ₹11 in year two, ₹12.10 in year three, and so on.

Almost every modern financial product (FDs, mutual funds, EMIs, credit cards) compounds. We covered this idea in depth in our lesson on SIP and compounding.

3. Inflation

Inflation is the steady increase in prices, which means the steady decrease in what your money buys.

India's retail inflation — the official measure is called CPI, the Consumer Price Index — has averaged roughly 5–7% per year over the last two decades. That sounds small, but it compounds against you the same way SIP returns compound for you.

This is the silent reason every advisor pushes you toward investments. Cash is not safe; cash is slowly burning. Investments with returns above inflation are how you stay even, let alone get ahead.

4. Real vs nominal

Once you know about inflation, every return number you see comes in two flavours:

• Nominal return — the headline number. "My FD pays 6.5%."
• Real return — what is left after inflation. "Inflation is 6%, so my real return is 0.5%."

The simple-but-good-enough formula:

5. Yield vs return

People use these two words as if they are the same. They are not. The distinction matters most when you are looking at bonds, debt funds, or rental property.

• Return is the total result of holding an investment over a period — including price changes, dividends, interest, everything. "My fund returned 15% last year."
• Yield is the income an investment produces in a year, expressed as a percentage of its current price. "That bond yields 7.2%." Yield is a snapshot, not a track record.

6. Risk-free rate

The risk-free rate is the return you can earn without any meaningful chance of losing your money. In India, the usual proxy is the yield on Government of India securities — most commonly the 10-year G-Sec, which has typically traded between 6% and 8% over the last decade.

Why does this number matter to you, an ordinary investor? Because every other return is judged against it. Anything riskier than a G-Sec must offer more return — otherwise why take the risk? The extra return is called the risk premium.

CFA, CFP, and NISM curricula all build on this single anchor. Every financial calculation you will encounter in those exams quietly references the risk-free rate.

7. Liquidity

Liquidity is how quickly and cheaply you can turn an asset into cash without losing meaningful value.

Money in your savings account is the most liquid thing you own — you can withdraw any rupee any moment. A fixed deposit is less liquid (early withdrawal incurs a penalty). A liquid mutual fund is fairly liquid (1-day redemption). A flat in Indore is very illiquid — selling it in a hurry could cost you 10–20% of fair value, plus weeks of paperwork.

Liquidity is the third dimension of every investment, alongside risk and return. Most people only think about the first two.

8. EMI

EMI is just compound interest, reorganised so you pay it back in equal monthly chunks.

When you take a home loan of ₹30 lakh at 9% per year for 20 years, the bank does not just want ₹30 lakh back. It wants ₹30 lakh plus 9% per year in compound interest on the shrinking outstanding balance. The EMI is the equal monthly instalment that, over the loan tenure, repays principal and interest exactly to zero.

This is why making one or two extra principal payments early in the tenure can shorten the loan by years. The math of EMIs hides this; understanding compound interest reveals it.

Five financial articles you can now read

Try this experiment over the next week. Open the business pages of any major Indian paper — The Hindu BusinessLine, Mint, Business Standard, Economic Times — and look for these five kinds of articles. You should be able to follow each:

1. An RBI monetary-policy article. (Watch for: repo rate, risk-free rate, inflation, real return.)
2. An article on FD or savings rates. (Nominal vs real return, liquidity.)
3. A mutual fund commentary. (Yield vs return, time-value of money, compounding.)
4. A home-loan or rate-cut article. (EMI, compound interest, tenure.)
5. A "how to plan retirement" piece. (All eight words show up in some form.)

If you can follow even three of these five without re-reading, this lesson did its job.

What this lesson did not cover

• Tax implications. Almost every concept here has a tax dimension that changes the after-tax answer. We will give taxation its own lesson.
• Specific products. We named categories (FD, mutual fund, G-Sec, PMS, AIF) without explaining each. They come in Layer-2 and Layer-3.
• The math of bond pricing — why yield rises when bond prices fall, and vice versa. That is a NISM 7 / CFA Level 1 topic.
• Behavioural finance. The vocabulary above is rational; human investors are not. The gap between the two is its own discipline.