Sectoral composition

Also called: Structural composition · Topic: Sectors of the Indian Economy · NCERT: Class 11, Ch 2 "Indian Economy 1950-1990"

Meaning

Sectoral composition (also called structural composition) is the share of each of the three sectors in an economy's total output: primary (agriculture and allied activities), secondary (industry) and tertiary (services). Output here is measured as GVA or GDP.

• Formula: Sector share (%) = (Sector GVA ÷ Total GVA) × 100

It shows what kind of economy a country has, and how that economy is changing over time. It also shows which sector is driving growth. In some economies farm growth drives GDP growth. In India today, services do.

Explanation

How it is measured

• Step 1: count values, not quantities. We cannot add 10 cars to 500 nails. So every good or service is turned into its money value (quantity × price), and then the values are added.
• Step 2: use value added, so nothing is counted twice.
• Value added = value of output − value of intermediate inputs (goods used up in making the final good).
• Wheat (₹20) → flour (₹25) → biscuits (₹80). The value added at each stage is ₹20 + ₹5 + ₹55 = ₹80.
• If you add every sale (₹20 + ₹25 + ₹80 = ₹125), you make a double counting error.

• Because value added belongs to one producer, it can be split cleanly into farm, factory and service parts.

• Step 3: add up each sector's GVA. Gross Value Added (GVA) = Output − Intermediate consumption [5].

• Step 4: divide each sector's GVA by total GVA.
• Why GVA and not GDP for sector shares? GDP = Σ GVA at basic prices + product taxes − product subsidies [4][5]. Product taxes such as GST cannot be tied neatly to one sector. So:
• sector shares are measured with GVA
• the size of the whole economy is measured with GDP

The three sectors (as used in MoSPI releases)

• Primary: agriculture, livestock, forestry, fishing, mining and quarrying [2][3].
• Secondary: manufacturing; electricity, gas, water supply and other utilities; construction [2][3].
• Tertiary: services [2][3].

Worked example

Hypothetical numbers, in ₹ lakh crore:

Sector	GVA	Share
Primary	50	50 ÷ 300 × 100 = 16.7%
Secondary	80	80 ÷ 300 × 100 = 26.7%
Tertiary	170	170 ÷ 300 × 100 = 56.7%
Total GVA	300	100%

• Add product taxes (+35) and subtract product subsidies (−5). This gives GDP at market prices = 330.
• The sector shares are still worked out on the GVA total of 300, not on the GDP of 330.

Real data (Class 10 exercise, GVA in ₹ lakh crore):

• 2021-22: 24.79 ÷ 138.77 = 17.9% primary; 40.73 ÷ 138.77 = 29.4% secondary; 73.25 ÷ 138.77 = 52.8% tertiary.
• 2001-02: 30.8% primary; 24.2% secondary; 45.0% tertiary.

What makes a sector's share rise or fall

• A share depends on relative growth, not absolute growth.
• If a sector grows more slowly than the others, its share falls.
• This happens even when its own output is rising.

• Example: primary GVA almost doubled, from 13.23 (2001-02) to 24.79 (2021-22). Yet its share fell from ≈31% to ≈18%.

• Prices matter in nominal (current-price) data.

• Nominal figures mix changes in quantity with changes in price.

• If service prices rise faster than farm prices, the services share rises even if real output does not change.

• Structural change is the long-run trend. As an economy develops, the share of agriculture usually falls. The shares of industry and services usually rise.

• Methods of measurement can shift shares. In the new series, the GVA of multi-activity companies (companies doing more than one kind of business) is split across their activities. It is no longer all put under the main business. This changes sector shares [5].

In India

• Who measures it: MoSPI/NSO (Ministry of Statistics and Programme Implementation / National Statistical Office) estimates national GVA by sector.

• The Directorates of Economics and Statistics (DES) of the States and UTs compile GSDP (Gross State Domestic Product). They use MoSPI's guidelines, definitions and methods [5].

• Price basis: since the 2011-12 base revision, sector-wise GVA is reported at basic prices instead of factor cost [4].

• Basic prices = factor cost + production taxes − production subsidies [4].

• Standard: India follows the UN's SNA 2008 (System of National Accounts). It plans to move to SNA 2025 at the next base revision [5].

• Base year: 2004-05 → 2011-12 → 2022-23 [5]. The new series was released on 27 February 2026. The back series (older years recalculated by the new method) is due by December 2026 [5].
• Better sector data in the new series [5]:
• Double deflation (output and inputs each adjusted for price changes with their own price index) is now used in manufacturing and agriculture.
• The informal sector is measured directly every year through ASUSE (Annual Survey of Unincorporated Sector Enterprises) and PLFS (Periodic Labour Force Survey).

• Company filings (MCA forms MGT-7/7A) are used to split multi-activity companies across sectors.

• Long-run picture (Class 11):

Sector	1950-51	1990-91	2021-22 (GVA)
Agriculture / Primary	59.0%	34.9%	≈18%
Industry / Secondary	13.0%	24.6%	≈29%
Services / Tertiary	28.0%	40.5%	≈53%

• Recent real growth (new series):
• 2023-24: Primary 2.6%, Secondary 11.6%, Tertiary 7.3% [2][3]

• 2024-25: Primary 4.9%, Secondary 8.0%, Tertiary 7.9% [2][3]

• Nominal GDP: ₹345.47 lakh crore (2025-26) [2][3].

• NCERT caution: Class 10 uses 2011-12-base data and stops at 2017-18. Use the latest National Accounts Statistics (NAS) on the 2022-23 base.

Don't confuse with

• Occupational structure: this is the share of workers in each sector. Sectoral composition is the share of output. In India, output moved from agriculture to services, but most workers stayed in agriculture.
• Sectoral growth rate: this is how fast a sector's own output grows. A sector can grow and still lose share, if the other sectors grow faster.
• Manufacturing value added (MVA): this covers only manufacturing (about 13-17% of GDP in India) [6]. The secondary sector is wider. It also includes construction and utilities (electricity, gas, water supply).
• GDP at market prices: this adds net taxes on products to GVA. Sector shares are worked out on GVA at basic prices, not on GDP.

Prelims Hooks

• Sector share (%) = (Sector GVA ÷ Total GVA) × 100. Sector shares use GVA at basic prices, and have been reported this way (instead of at factor cost) since the 2011-12 base revision [4].
• Trap: in MoSPI releases, mining and quarrying is in the primary sector. Electricity, gas, water supply and construction are in the secondary sector [2][3].
• Agriculture's share fell from 59.0% (1950-51) to 34.9% (1990-91). Services rose from 28.0% to 40.5% in the same period.
• The tertiary share of GVA was about 53% (2021-22), up from ≈45% (2001-02). Services now produce more than half of GVA.
• Trap: a falling sector share does not mean falling output. Primary GVA nearly doubled from 2001-02 to 2021-22, even as its share fell.
• The current base year is 2022-23, released on 27 February 2026. GSDP is compiled by State/UT Directorates of Economics and Statistics [5].

Mains Points

• Output moved, jobs did not.
• Agriculture's share of output fell from 59% (1950-51) to ≈18% (2021-22). But agriculture still employs the largest share of workers.
• So output per worker in farming stays low, and rural incomes lag behind.

• This supports labour-intensive manufacturing (PLI schemes, MSME support) to fill the "missing middle". India's MVA (≈13-17% of GDP) is far below China's (≈25-27%) [6].

• Services-led growth: strengths and risks.

• Services now drive India's growth, with more than half of GVA.
• But India skipped a large factory stage. Many services need high skills, so they absorb fewer low-skilled workers who leave farming.

• A balanced structure needs growth in manufacturing and in allied farm activities (pulses, oilseeds, fisheries) as well [5].

• Data quality shapes how we read structural change.

• Double deflation, direct annual surveys of the informal sector and the splitting of multi-activity companies give more accurate sector shares [5].
• Shares from the old 2011-12 series and the new 2022-23 series should not be compared directly until the back series is out (due by December 2026) [5].
• Nominal shares can hide real trends, so policy should read real growth figures alongside them.

Related concepts

• Manufacturing value added

Read more

• Counting sectoral output: value, final goods, GVA and sectoral composition