12. Reliance Industries

Year End: March 2012

Profit Before Tax: 25,408 crore

Tax: 5,226 crore

Effective Tax Rate (In Percent): 20.6

Reliance Industries Limited (RIL) is an Indian multinational company headquartered in Mumbai. The company functions primarily in three major business segments: petrochemicals, refining, and oil and gas, other segment of the company includes textile, retail business, telecom/broadband business and special economic zone (SEZ) development. The company because of its large size operation and, is ranked 99th on Fortune Global 500 list of the world's biggest corporations for the year 2012.

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13. Hindalco Industries

Year End: March 2012

Profit Before Tax: 4,345 crore

Tax: 925 crore

Effective Tax Rate (In Percent): 21.3

Hindalco Industries is one of the largest aluminum manufacturing companies of the world. It is a subsidiary of the Aditya Birla Group and is operated by Kumar Mangalam Birla, one of the world's youngest billionaires. It employs 13,675 people and is listed on Forbes 2000.

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14. Wipro

Year End: March 2012

Profit Before Tax: 6,981 crore

Tax: 1,584 crore

Effective Tax Rate (In Percent): 22.7

Wipro Limited (formerly Western India Products Limited) is an Indian transnational provider of Information technology (IT) services, outsourcing and consulting services. It is headquartered in Bangalore, India. In 2012, the company has over 130,000 employees and a worldwide existence with global centers around 54 countries. It operates in four sections: IT products and services, Consumer care and lighting, Healthcare and Infrastructure engineering.