One Non-resident Indian (US National) as per number of days stay in India, his residential status is Resident but as per DTAA his residential status is NRI, as he fulfills criteria of permanent residency in USA and he has center of vital interest in USA.
For Income tax return filing purposes, his status will be NRIOR treated RESIDENT and his global income will be taxable and credit for tax paid in USA to be taken under section 91.
Residential status under tax treaty can determine non resident treatment, affecting taxation and eligibility for foreign tax credit. Conflict arises where domestic day count rules render an individual resident while the DTAA and facts of permanent residency and centre of vital interests abroad point to treaty based non resident treatment; treaty characterization governs taxing rights and gives rise to the practical issue of whether global income is taxable domestically and whether relief by way of foreign tax credit is available under domestic law. (AI Summary)