The concept of dual residence crucially affects taxation of non-resident Indians and individuals who travel frequently between India and other countries. India follows a residence-based taxation system for residents, i.e., an Indian resident is taxed on his global income. A non-resident is taxed on income which is sourced or accrued or received in India.
However, the confusion arises when an individual leaves the country and starts residing in another country under the laws of which he also becomes a resident in that other country in that year. Thus, the individual may become a ‘dual resident’ for tax purposes. Taxation of dual residents is resolved either under local laws or when there is a Double Taxation Avoidance Agreement (DTAA) executed between the two jurisdictions of which they are residents, through application of the tie breaker clause in the DTAA.