Archive · 3 Sep 2026
GDP Base Revision Debate Should Not Obscure India’s Growth
India changed the way it measures the size of its economy by using a newer base year.
This also changed some older GDP numbers.
Some people compared a new current number with an old previous number and calculated growth of only 2.6%.
The article says this is not a fair comparison because the two numbers were calculated differently.
Using figures from the same series gives nominal growth of about 9.7%.
The official real GDP growth for the quarter was 7.8%.
Other indicators, such as tax collections, vehicle sales, factory output and exports, also showed growth.
The article argues that the controversy comes from mixing different versions of the data rather than from evidence of very weak economic activity.
India’s Q1 FY27 real GDP growth was reported at 7.8%, while real GVA growth reached 8.2%.
The new GDP series revised Q1 FY26 nominal GDP from Rs 86.1 lakh crore to about Rs 80.4 lakh crore.
Comparing Q1 FY27’s Rs 88.3 lakh crore with the unrevised earlier figure produces a misleading 2.6% growth rate.
Using figures from the same revised series indicates nominal growth of about 9.7%, according to the article.
Economic indicators including GST, vehicle sales, IIP, exports and FDI were cited as evidence of continued expansion.
- Who
- India’s Ministry of Statistics and Programme Implementation, the National Statistical Office, GDP critics and supporters, and the article’s author.
- What
- A debate over India’s Q1 FY27 GDP growth figures and the effect of revising the GDP base year and historical data.
- When
- The latest figures were released on August 31; Q1 FY27 refers to the first quarter of fiscal year 2026-27.
- Where
- India.
- Why
- The controversy arose because the new GDP series revised earlier figures, leading some commentators to compare figures calculated on different bases and methods.
Critics of the GDP figures
Defenders of the official series
Interpretation of growth
Critics of the GDP figures
Some commentators calculate nominal growth of 2.6% by comparing Q1 FY27’s new-series figure with the earlier unrevised Q1 FY26 figure.
Defenders of the official series
The article says this is a hybrid, like-for-unlike comparison and not a meaningful growth rate.
Impact of rebasing
Critics of the GDP figures
Critics argue that changes to the base year and revisions create confusion and may undermine confidence in the reported numbers.
Defenders of the official series
The article says rebasing and retrospective revisions are legitimate processes intended to improve accuracy, consistency and comparability.
Strength of economic activity
Critics of the GDP figures
The 2.6% calculation is presented by its proponents as evidence that growth may be much weaker than the official figures suggest.
Defenders of the official series
The article points to 7.8% real GDP growth, 8.2% real GVA growth and growth in GST, vehicle sales, industrial output, exports and FDI as evidence of continuing expansion.
- Official real GDP growth
- Q1 FY27 real GDP growth was 7.8%.
- Real GVA growth
- Real GVA grew 8.2% in Q1 FY27.
- Q1 FY27 nominal GDP
- Rs 88.3 lakh crore under the new series.
- Revised Q1 FY26 nominal GDP
- About Rs 80.4 lakh crore under the new series, compared with Rs 86.1 lakh crore in the earlier series.
- Alternative nominal growth
- A same-series comparison gives approximately 9.7% nominal growth, according to the article.
- GST collections
- GST collections through August totaled Rs 10.42 lakh crore, up 11%; Q1 FY27 growth was 8.6%.
- Latest finalisation
- The article says the latest Q1 FY27 figure will be finalised by February 2029.