Inflation Rate in India: The Last 10 and 20 Years, Year by Year

India’s CPI inflation averaged 4.67% a year over the last ten financial years (FY2016-17 through FY2025-26) and 6.52% a year over the last twenty (FY2006-07 through FY2025-26). Those two numbers describe two different countries. In the first of those decades, eight years out of ten ran above 6%. In the second, only two did.

That gap matters more than it looks. Almost every retirement plan, education goal, and SIP target built in India uses 6% as the standing inflation assumption. Against the last ten years of actual data, 6% is roughly a third too high. Against the last twenty, it is slightly too low. This page lays out the full year-by-year record, explains what the CPI 2024 base-year revision does to it, and shows in rupees what happens when you plan with the wrong number.

Inflation Rate in India for the Last 10 Years

The table below shows average annual CPI (Combined) inflation for each of the last ten financial years, as published by the National Statistical Office. Financial years run April to March, which is how the Reserve Bank of India and the Union Budget report inflation.

Ten-year compounded average: 4.67% per year. Cumulative price rise over the decade: 57.9%. A basket of goods that cost ₹100 ten years ago costs about ₹157.87 today.

That 4.67% is a compounded average, not a simple one. Averaging the ten annual rates arithmetically is the mistake most tables make. Inflation stacks year on year, so the correct calculation chains the rates:

Here the two methods land close together — the simple average is 4.68% against a compounded 4.67%, and over twenty years it is 6.56% against 6.52%. The gap is small because the annual rates, while spread wide, were not volatile enough to pull them apart. It grows with dispersion, so the compounded form is the one to use as a habit rather than only when it visibly matters.

Three of those ten years printed below 4%: FY2017-18, FY2018-19, and FY2025-26. FY2025-26 was the softest full year on record for Indian retail inflation, driven by an unusually long stretch of falling food prices — the Economic Survey noted food prices declined over a nine-month run, the longest such decline in the CPI series.

Note on FY2025-26: this year straddles a series change. Monthly prints from April to December 2025 came from the CPI 2012 series; January 2026 onward came from the new CPI 2024 series. The ≈2.1% figure is the old-series full-year average and will be restated marginally once the linked series is settled.

The 20-Year Record: Two Very Different Decades

Extending the window to twenty years changes the picture completely, because it reaches back into the pre-inflation-targeting era.

Split the twenty years in half and the contrast is stark:

• FY2006-07 to FY2015-16: 8.41% compounded per year. The peak was FY2009-10 at 12.4% — the highest annual reading in the twenty-year window. Eight of those ten years cleared 6%.
• FY2016-17 to FY2025-26: 4.67% compounded per year. Only FY2020-21 and FY2022-23 cleared 6%.

Over the full twenty years, prices rose 253.9% cumulatively — a compounded rate of 6.52%. The single structural break between the two decades is the adoption of flexible inflation targeting in 2016, which set a statutory 4% CPI target with a 2–6% tolerance band. The framework was renewed by Gazette notification on 25 March 2026 for the April 2026 to March 2031 period, keeping the 4% target and the ±2% band unchanged.

Why the Pre-2012 Rows Use a Different Index

India’s headline CPI (Combined) series — the one the RBI targets — only begins in January 2011, with usable year-on-year inflation from 2012. For anything earlier, the official long-run retail inflation series is CPI for Industrial Workers (CPI-IW), compiled by the Labour Bureau. The two indices measure different baskets for different populations, so the FY2006-07 to FY2011-12 rows above are directionally right but not strictly continuous with the rows beneath them. Any site presenting a single unbroken 20-year “CPI” series for India is quietly splicing indices without saying so.

What the CPI 2024 Base-Year Change Means for These Numbers

On 12 February 2026, the Ministry of Statistics and Programme Implementation released a rebuilt CPI with 2024 as the base year, replacing the 2012 base that had been in use since 2015. The first print on the new series was January 2026 retail inflation at 2.75% (provisional).

This was not a routine refresh. The old weights came from the 2011-12 consumer expenditure survey, which meant India in the mid-2020s was being measured against a basket that still carried VCRs and tape recorders. The new weights come from the Household Consumption Expenditure Survey 2023-24, using its Mixed Modified Reference Period.

What Actually Changed

New items entering the basket include OTT subscriptions, rural house rent, value-added dairy, pen drives, babysitting services, and fitness equipment. VCR/DVD players and tape recorders were dropped.

The food weight is the headline change, and it is widely misread. MoSPI has been explicit that the drop from 45.86% to 36.75% is only partly a change in what households buy. Had the old 2012 classification been retained, food and beverages would have fallen to 40.10% on its own. The rest of the gap comes from adopting COICOP 2018, which re-maps items such as prepared meals into different divisions. Practically, a lower food weight means a bad tomato season moves the headline number less than it used to — which makes headline CPI steadier, not lower. SBI Ecowrap estimated the reweighting adds roughly 20–30 basis points to measured inflation, not subtracts.

Does the New Series Rewrite the Last 10 Years?

Partly. MoSPI published a back series alongside the launch: all-India rural, urban, and combined indices from January 2013 to December 2024, and annual inflation rates from January 2014 to December 2024. These were built using a linking factor derived from 2025, the one year in which both series ran in parallel — the ratio of the geometric mean annual index of the new series to that of the old:

Two limits are worth knowing. First, the back series does not reach before 2013, so the earlier half of the twenty-year record cannot be restated at all. Second, MoSPI has flagged that the two series can be directly linked only at the general index level; the division and group breakdowns are not comparable across the break because the classification changed underneath them. If you are comparing, say, education inflation in 2015 to education inflation today, you are comparing two differently defined categories.

For planning purposes, the practical answer is that the compounded 10-year and 20-year averages shift by tenths of a percent, not whole points. The shape of the record — a high-inflation decade followed by a low-inflation decade — is unchanged.

The 6% Problem: What a Standard Planning Assumption Gets Wrong

Most Indian financial planning defaults to 6% inflation. It is a defensible round number: it sits at the top of the RBI’s tolerance band and it is close to the twenty-year record of 6.52%. But applied to the last ten years, it overstates reality badly, and the error compounds.

Take a household spending ₹50,000 a month today, planning 25 years out to retirement. The future cost of a present-day expense is a straight compounding problem:

where E_0 is today’s expense, i the assumed inflation rate, and n the number of years. Swapping one value of i for another produces this:

The 6% assumption inflates the projected monthly expense by 37% and the required SIP by ₹9,183 a month. Over 25 years that is ₹27.5 lakh of extra contributions demanded by an assumption rather than by the data. You can test the same sensitivity on your own numbers with the retirement planning calculator and check the resulting monthly commitment against the SIP calculator.

Why 6% Still Isn’t Obviously Wrong

Before deleting 6% from your spreadsheet, look at the other direction. Compound ₹1,00,000 of expenses at a flat 6% and compare against what actually happened:

• Over 10 years: 6% gives ₹1,79,085. Actual inflation gave ₹1,57,869. The assumption overshot by ₹21,216.
• Over 20 years: 6% gives ₹3,20,714. Actual inflation gave ₹3,53,885. The assumption undershot by ₹33,171.

The same 6% was too high for the recent decade and too low for the full twenty years. That is the honest state of the evidence, and it is why a single point estimate is the wrong tool. A more useful approach is to run your goal at three rates — 4%, 6%, and 7% — and see whether the plan survives all three. If it only works at 4%, it is not a plan, it is a hope. The inflation calculator lets you swap the rate and compare outputs side by side.

One category-specific caveat: headline CPI is a national average across a basket you may not buy. Education services carry a 3.3% weight in the new series; healthcare and school fees have historically run well above headline. If your major future costs are concentrated in those categories, the headline rate understates your personal inflation.

What Inflation Did to the Rupee

The same record, expressed as purchasing power rather than as a rate:

Money left idle for twenty years lost roughly 72% of its purchasing power. Even at the gentler recent rate, prices double in about 15.2 years; at the twenty-year rate, they double in about 11 years. That doubling interval is the real cost of postponing an investment decision — a delay you can quantify with the cost of delay calculator.

Turning These Numbers Into Real Returns

Nominal returns are meaningless without the inflation rate beside them. The common shortcut — subtracting inflation from returns — is an approximation that drifts at higher rates. The exact relationship is the Fisher formula:

At a 12% nominal return and 6.52% inflation, the shortcut gives 5.48% while the exact formula gives 5.14% — a third of a percentage point that compounds into lakhs over a 25-year horizon.

Read the bottom row carefully. A 7% fixed deposit against twenty-year average inflation returns 0.45% in real terms before any tax is applied. Since FD interest is taxed at slab rate, a 30%-bracket investor holding that deposit was losing purchasing power the entire time. This is the arithmetic behind the SIP versus FD comparison — the gap is not mainly about higher headline returns, it is about what survives inflation and tax.

CPI, WPI, and Core: Which Number Is “The” Inflation Rate

Three numbers circulate in Indian news coverage and they are not interchangeable.

• CPI (Combined) measures retail prices paid by households, rural and urban together. This is the headline inflation rate, the RBI’s target variable since 2016, and the one every table on this page uses.
• WPI measures wholesale prices of goods only. It excludes services entirely, which is why it can print negative while retail inflation runs above 5%. It stopped being the policy anchor when CPI replaced it in 2014.
• Core CPI is headline CPI stripped of food and fuel, the two most volatile components. Policymakers watch it for underlying price pressure. It is a diagnostic, not a cost-of-living measure — you cannot exclude food from your household budget.

For any personal financial calculation — retirement corpus, education goal, real return on a fixed deposit — CPI (Combined) is the correct series.

Sources

• Ministry of Statistics and Programme Implementation — CPI press releases, CPI 2024 base updation technical note, and FAQs on the CPI 2024 series
• Economic Survey, Prices and Inflation chapters — financial-year CPI-C, CPI-IW, and WPI series
• Reserve Bank of India — Monetary Policy Statements and the flexible inflation targeting framework notification
• Labour Bureau, Ministry of Labour and Employment — CPI-IW series