India grew 7.8%. So why are people calculating 2.6%?

In Q1 FY 2026–27 India's nominal GDP was ₹88.27 lakh crore. A year earlier the published figure was ₹86.05 lakh crore. Divide one by the other and you get about 2.6% — not the official 7.8%. The arithmetic is fine. The comparison is not.

The short answer

• ₹86.05 lakh crore came from the old 2011–12 GDP series. ₹88.27 lakh crore comes from the new 2022–23 series. They are not the same ruler.
• On the same latest series, Q1 FY 2025–26 nominal GDP is ₹80.00 lakh crore. ₹80.00 → ₹88.27 is 10.3% nominal growth.
• Removing price change, real GDP went ₹75.46 → ₹81.36 lakh crore at constant prices — 7.8% real growth.
• GDP is a statistical estimate assembled from surveys, administrative records and indicators. It is not a count of every transaction.
• A base-year revision updates the whole measuring framework — benchmarks, sources, classifications and methods — because the economy itself changed. That legitimately changes past estimates, upward for some activities and downward for others.
• None of this places statistical methodology beyond scrutiny. The real questions are about transparency, consistency and the defensibility of the sources and assumptions.

The interactive version

The full experience is a low-poly 3D village that grows from 2010 to 2026, so you can watch the structure of an economy change and see why a measuring framework built for the old structure has to be recalibrated. It needs JavaScript. A simplified, non-3D version of the same village is available inside the site if WebGL is unavailable.

Sources

• MoSPI — Gross Domestic Product releases
• PIB — New series of GDP estimates with base year 2022–23 (27 February 2026)
• PIB — Additional information on GDP estimates after the Q1 FY 2026–27 release