In India, as per section 9(1)(ii) of the Income Tax Act, the income earned by foreign expatriates is consideredto be obtained in India for services rendered by him. It can be measured under the 'salaries' head of revenue.

Employment visa Initially, an employment visa is issued for a one-year stay; the period can be extended by the Regional Registration Office of Foreigners (FFRO) in India if the employment contract continues. The X-visa is valid for stays of six months to five years, with multiple entries available for legitimate purposes.

Indian laws give various types of forms to foreign nationals to start their business in India, such as private limited company, public limited company, branch office, etc. However, the form has to be chosen only after thorough consideration of all the pros and cons associated with it.

A exchange-Off: Long Work Weeks in India for a Low Cost Life. Expats find themselves working more than the typical global expat for four hours, although not without reward: India's cost of living is among the cheapest in the world. The Cost of Living Index ranks 17th out of 68 countries and is India's best score.

180 DAYS, A longer-term visa is defined for foreigners of non-Indian origin as one that allows the holder to remain in India for more than 180 days (six months) continuously.
Jobs, Entry and Student Visas are the key Visas

Every Student Visa, Medical Visa, Research Visa and Employment Visa are required for all foreigners (including foreigners of Indian origin) visiting India on a long-term basis (over 180 days). and they have to get registered with the Regional Registration Officer for Foreigners (FRRO)

Indians working overseas do not have to pay tax on their income received abroad in India. Any revenue received from an Indian source-profession or corporation, however, is liable to be taxed. Someone who lived for more than 183 days or more than 6 months outside of India was the earlier concept of a non-resident Indian.

Residents are liable to pay tax on their worldwide income (Indian income plus foreign income) while non-residents are liable to pay tax only on their income from India. ... This which result in double taxation of the same income according to both countries' domestic tax laws.

Exemption for short stay. Usually, an expatriate is given a short stay exemption if he is present in the overseas country for less than 183 days during a tax year.

YES.  For Aadhaar from any Aadhaar Kendra, an NRI (whether minor or adult) with a valid Indian Passport may apply. ... If the spouse is an NRI, the applicant 's legitimate Indian passport is mandatory as proof of identity (PoI).

Non-resident (NR) or non-ordinary resident (NOR) individuals in India are not allowed to disclose foreign assets. ... There is an exemption from foreign asset reporting that was obtained in India when the foreign national was an NR and from which no income was received during the financial year.