An individual is resident in India for a previous year if either basic condition is met: present in India for 182 days or more during the year (Sec 6(1)(a)); or present for 60 days or more during the year AND 365 days or more in aggregate during the preceding 4 years (Sec 6(1)(c)). Meeting neither makes the individual a non-resident for that year.
The 60-day condition does not apply at all to an Indian citizen who leaves India during the year for employment abroad or as a crew member of an Indian ship — only the 182-day test applies. It also does not apply to an Indian citizen or PIO living abroad who visits India, PROVIDED their total income other than foreign-source income is ₹15 lakh or less; where that income exceeds ₹15 lakh, Finance Act 2020 replaced the 60-day threshold with a 120-day threshold for this class (still combined with the 365-days-in-4-years condition). Separately, Sec 6(1A) deems an Indian citizen a resident (irrespective of days present) if their India income exceeds ₹15 lakh and they are not liable to tax in any other country or territory by reason of domicile, residence or a similar criterion — a sweep aimed at "stateless" individuals, and it applies only where the person is not already resident under the basic conditions.
A resident individual is Resident and Ordinarily Resident (ROR) only if both additional conditions under Sec 6(6) are met: resident in India in at least 2 of the preceding 10 years, AND present in India for 730 days or more during the preceding 7 years. Failing either makes the person Resident but Not Ordinarily Resident (RNOR). A person who is resident only via the 120-day rule, or only via the Sec 6(1A) deemed-residency sweep, is automatically RNOR regardless of those two tests. The classification then drives the scope of taxation under Sec 5 — ROR is taxed on worldwide income; RNOR is taxed on India income plus foreign income only from a business controlled from India or a profession set up in India; NR is taxed only on India income.
An Indian citizen settled abroad runs a business and visits India during the year. India-sourced income (rental + consulting) is ₹22 lakh. Present in India 150 days this year; 480 days in aggregate over the preceding 4 years; liable to tax in the country of residence abroad.