Saving, investing and inflation

In simple terms

Saving is keeping some of your income instead of spending it. Investing is using money to buy something you expect to earn a return: interest, rent, dividends, or a rise in its price. Investing always carries some risk that the return is lower than hoped, or that you lose part of the money.

Both start the same way, by spending less than you earn. The difference is what the money does afterwards. Saved money waits, safe and ready to use. Invested money is put to work, and it is not always safe or ready.

There is a third force that affects both: inflation, the general rise in prices over time. When prices rise, each rupee buys a little less. So money that is simply kept aside is not standing still. Its purchasing power, what it can buy, slowly shrinks.

How India measures inflation

Retail inflation in India is measured by the Consumer Price Index (CPI), published every month by the Ministry of Statistics and Programme Implementation (MoSPI). The index tracks the prices of a fixed basket of goods and services that households buy, such as food, housing, clothing, transport, health and education. The inflation rate is the percentage change in the index compared with the same month a year earlier. Every few years the basket and the weight of each item are updated from surveys of what households actually spend.

The Reserve Bank of India (RBI) runs monetary policy with the aim of keeping CPI inflation close to a target set by the government.

The CPI is an average for the whole country. Your own costs can rise faster or slower than the official figure, depending on what you spend on. A family that spends most of its budget on food feels food prices much more than the average does.

What inflation does to idle money

The nominal and real returns lesson shows how to work out the return after inflation directly.

Saving and investing do different jobs

A sensible order is to build savings for emergencies first, so that a job loss or a medical bill never forces you to sell an investment at a bad moment. Only money you will not need for several years can afford to ride out the falls that come with investing. The next lesson looks at that trade-off between risk, return and access in more detail.

Deposits in Indian banks, including savings accounts and fixed deposits, are insured by the Deposit Insurance and Credit Guarantee Corporation (DICGC), a subsidiary of the RBI, up to a limit per depositor at each bank. The insurance protects you if a bank fails. It does not cover money placed with companies that are not banks, or investments such as shares and mutual funds.

Why it matters

Most people judge their money by the number in the account. Inflation means that number can rise while your real wealth falls. Understanding this is the starting point for every later lesson: it is the main reason people invest at all, and it is the yardstick against which any investment should be judged. A 6% return sounds very different when prices are rising 2% a year than when they are rising 6%.

It also protects you. Scams often target people who are worried about inflation eating their savings, with promises of returns that "beat inflation" safely. Real investments that can beat inflation over time do so by taking risk, and they can fall in value along the way.

Limitations

• The CPI is an average basket. It will not match your personal spending, and it can change as the basket and weights are updated.
• The examples assume a steady inflation rate. Real inflation moves around from year to year, sometimes sharply.
• Comparing returns with inflation ignores tax, which also reduces what you keep.
• This lesson explains general ideas. How much to save and how much to invest depends on your income, responsibilities and goals, which no general lesson can judge for you.

Common mistakes

• Treating cash as risk-free. Cash rarely loses rupees, but it reliably loses buying power when prices rise.
• Comparing a return with zero instead of with inflation. A 4% return when prices rise 6% leaves you worse off.
• Investing money you will need soon. If you may need it within a year or two, a fall in prices could force you to sell at a loss.
• Assuming deposit insurance covers everything. It covers bank deposits up to a limit; it does not cover company deposits with NBFCs, shares or mutual funds, and it does nothing about inflation.

Try it yourself

1. Find the latest CPI inflation figure on MoSPI's website or in a news report that names MoSPI as the source.
2. Using that rate, work out what ₹50,000 kept in cash would buy in today's rupees after five years: 50,000 ÷ (1 + rate)⁵.
3. Check the interest rate your bank pays on a savings account. Is it above or below the inflation figure you found?
4. Try the same numbers in the real return calculator.