What Inflation Does to Your Savings: Real Returns Explained

Inflation means the same rupees buy less every year. At 6% inflation, something that costs ₹1,00,000 now will cost ₹1,79,085 in 10 years, so ₹1 lakh kept as cash will buy only what ₹55,839 buys now. India's retail inflation was 5.54% in September 2026 (MoSPI, provisional). At that rate a savings account paying 2.5% loses about 2.9% of its buying power a year, and even a fixed deposit can fall behind once tax is paid.

You can test any amount, rate and period in the inflation calculator. This guide shows how to work out your real return, compares savings accounts, FDs and small savings schemes with current inflation before and after tax, and explains what you can do about it.

How inflation eats buying power

The inflation calculator uses one formula: future cost = today's cost × (1 + inflation rate)^years. Enter ₹1,00,000, 6% and 10 years and it shows ₹1,79,085, meaning you need ₹79,085 more to buy the same things. Here is how ₹1 lakh of spending grows at three rates:

Turn it around and you see what idle cash loses. Divide by the same factor: at 6%, ₹1,00,000 ÷ 1.79085 = ₹55,839 of today's buying power after 10 years, and ₹1,00,000 ÷ 3.20714 = ₹31,180 after 20 years. A quick mental check is the rule of 72: prices double in roughly 72 ÷ inflation years. At 6% that is 12 years, and 1.06 multiplied by itself 12 times is indeed 2.01.

Real return: what you earn after inflation

The interest rate your bank quotes is the nominal return. The real return is what is left after inflation:

Real return = (1 + nominal return) ÷ (1 + inflation) − 1

The quick version, nominal minus inflation, is close enough at low rates. With September 2026's inflation of 5.54%, keeping the same buying power for a year needs ₹1,05,540 for every ₹1,00,000. Here is where ₹1 lakh would stand after one year:

The FD figure comes from the FD calculator, which compounds quarterly: ₹1 lakh at 6.25% for one year earns ₹6,398. In the 30% slab, tax takes ₹6,398 × 31.2% = ₹1,996, leaving ₹1,04,402, which is ₹1,138 short of the ₹1,05,540 needed. Your balance went up, but it buys less than it did a year ago.

Over 10 years the gap compounds

Take ₹1 lakh for 10 years and assume 5% inflation a year, close to the RBI's projection of 5.2% for 2026-27. The inflation calculator says you need ₹1,62,889 to keep up.

• Savings account at 2.5%: the compound interest calculator gives ₹1,28,008. At today's prices that is ₹1,28,008 ÷ 1.62889 = ₹78,586, a loss of over a fifth of its buying power.
• FD at 6.05% (SBI's rate for 5 to 10 years), no tax: ₹1,82,298, worth ₹1,11,915 at today's prices.
• The same FD in the 30% slab: entering the after-tax rate, 6.05% × (1 − 0.312) = 4.16%, gives roughly ₹1,51,299, worth about ₹92,885 today. This is approximate, because tax is actually paid year by year, but the conclusion holds: after tax, the FD did not keep up with 5% inflation.

India's inflation right now (as of October 2026)

India measures retail inflation with the Consumer Price Index (CPI), published by MoSPI around the 12th of each month. From January 2026 data, MoSPI moved the CPI to a new base year, 2024 = 100, with weights from the Household Consumption Expenditure Survey 2023-24. Inflation has risen steadily through 2026:

Food prices are rising faster: food inflation was 7.74% in September 2026. Rural inflation (6.08%) was higher than urban (4.88%). The October figure is due on 12 November 2026.

The RBI's job is to keep CPI inflation at 4%, within a band of 2% to 6%; on 25 March 2026 the government kept that target for another five years, to March 2031. On 7 October 2026 the RBI raised its repo rate by 0.25 percentage points to 5.50% and projected inflation of 5.2% for 2026-27. Deposit rates often follow repo-rate moves with a lag, so check your bank's current rates rather than relying on the figures here.

Remember that CPI is an average basket. If most of your spending goes on rent, school fees or medical costs, your personal inflation can be well above the headline number.

Savings accounts, FDs and small savings vs inflation

As of mid-October 2026, these are the rates behind the examples:

• SBI savings account: 2.50% on all balances (since 15 June 2025). Post Office savings account: 4.0%.
• SBI fixed deposits (general public, below ₹3 crore, rates from 15 December 2025): 6.25% for 1 to 2 years, 6.40% for 2 to 3 years, 6.30% for 3 to 5 years and 6.05% for 5 to 10 years. Senior citizens get more.
• Post Office, October to December 2026: 1-year Time Deposit 6.9%, 5-year Time Deposit 7.5%, NSC 7.7%, PPF 7.1% (tax-free).

Tax decides whether these beat inflation. Interest from savings accounts, FDs, RDs and time deposits is added to your income and taxed at your slab rate. In the old regime, you can deduct up to ₹10,000 of savings-account interest (the old 80TTA, now section 153 of the Income-tax Act, 2025); senior citizens can deduct up to ₹50,000 of interest from all deposits. Neither deduction exists in the new regime. On the other hand, if your total income in the new regime stays within the ₹12 lakh rebate limit (₹12.75 lakh for salaried people), you pay no tax on the interest at all; see new tax regime slabs with examples.

PPF stands out in the table because its interest is tax-free, but the money is locked in for 15 years; the PPF guide explains the rules. For a side-by-side of deposits and market-linked options, see RD vs FD vs SIP for ₹5,000 a month.

What you can do about it

• Size your cash, don't maximise it. An emergency fund of a few months' expenses belongs somewhere you can reach quickly, even at a negative real return. Money beyond that need not sit at 2.5%.
• Compare rates every time you open or renew a deposit. The gap between 2.5% and 6.9% on ₹2 lakh is about ₹8,800 a year before tax.
• Use the tax rules you qualify for. If your income is below the taxable limit, Form 15G (below 60) or 15H (60 and above) stops TDS on deposit interest. TDS applies only when a bank's interest to you exceeds ₹50,000 a year (₹1,00,000 for seniors).
• Plan goals in future rupees. A course costing ₹10 lakh today costs ₹23,96,558 in 15 years at 6% inflation. Save for that figure, not ₹10 lakh. The SIP calculator or a deposit calculator shows the monthly amount needed at a given return.
• Check raises against inflation. A 5% hike on a ₹6 lakh salary adds ₹30,000, but at 5.54% inflation you need ₹33,240 more just to stand still. The salary hike calculator and the inflation calculator together show your real raise.
• Know the trade-off for long-term money. Goals 10 or more years away need a return above inflation after tax, which deposits alone may not give. Options that can earn more, such as equity mutual funds, can also fall in value. Our guide to how much a SIP can grow shows the maths and the risks.

This article is general information, not investment or tax advice; rates and inflation figures change, so check current numbers before you decide anything.

Frequently asked questions

What is the current inflation rate in India?

Retail (CPI) inflation was 5.54% in September 2026, a provisional figure released by MoSPI on 12 October 2026. It was 4.83% in August. Food inflation was 7.74%.

How do I calculate the real rate of return?

Divide (1 + your return) by (1 + inflation) and subtract 1. A 7% return with 5.54% inflation gives 1.07 ÷ 1.0554 − 1 = 1.38%. Use your return after tax for an honest figure.

Does an FD beat inflation?

Before tax, a 6.25% FD is slightly ahead of 5.54% inflation. After tax in the 20% or 30% slab, it is behind. If you pay no tax on the interest, it stays a little ahead.

What is RBI's inflation target?

4% CPI inflation, with a tolerance band of 2% to 6%. The government retained this target in March 2026 for April 2026 to March 2031.

Why does inflation feel higher than the official figure?

CPI tracks an average household basket. Your own costs, such as rent, fees, fuel or medicines, can rise faster than that average, and food, which households notice most, rose 7.74% in September 2026.

Sources: MoSPI, CPI press release for September 2026 (12 October 2026) and first release on base 2024 = 100 (12 February 2026); RBI Monetary Policy Committee resolution, 7 October 2026; RBI note on the inflation target review of 25 March 2026; SBI savings and retail term deposit rates (effective 15 June 2025 and 15 December 2025); Department of Economic Affairs, small savings rates for October–December 2026 (OM of 30 September 2026); Income-tax Act, 2025, section 153.