1. Agriculture & Allied Sector:This sector includes forestry and fishing also. This sector is also known as theprimary sector of the economy. At the time of Indian independence this sector had biggest share in the Gross Domestic Product of India. But year by year its contribution goes on declining andcurrently it contributes only 17% of Indian GDP at current prices.It is worth to mention that agriculture sector provides jobs to around 53% population of India.

2. Industry Sector:This sector includes 'Mining & quarrying', Manufacturing (Registered & Unregistered), Gas, Electricity, Construction and Water supply. This is also known as thesecondary sectors of the economy.Currently it iscontributing around 29 % of the Indian GDP (at current prices).

3. Services Sector:Services sector includes 'Financial, real estate & professional services, Public Administration, defence and other services, trade, hotels, transport, communication and services related to broadcasting. This sector is also known astertiary sector of the economy. Currently this sector is thebackbone of the Indian economy and contributing around 53% of the Indian GDP.

Services sector is the largest sector of India. Gross Value Added (GVA) at current prices for Services sector is estimated at 73.79 lakh crore INR in 2016-17. Services sector accounts for 53.66% of total India's GVA of 137.51 lakh crore Indian rupees.

Industrial sector contributes 29.02% with GVA of Rs. 39.90 lakh crore. While, Primary Sector of the economy i.e. Agriculture and allied sector contributes 17.32% and its GVA is around Rs. 23.82 lakh crore at the current prices in the FY 2016-17.