1. Why timing and residency drive the whole answer
Direct answer: the year you return determines which slice of your foreign income India can tax. As an NRI, only India-source income is in scope. As an RNOR — typically for up to three years post-return — foreign income remains outside Indian tax unless it is from a business controlled or profession set up in India. As an ROR, your worldwide income comes into the Indian net.
That means a 401(k) distribution, an RSU vest or an ESOP exercise taken while you are still RNOR has a very different outcome from the same event a year later. Plan exits, rollovers and option exercises against your residency timeline — see our RNOR planning guide for how to extend the window legitimately.
2. 401(k), IRA and foreign pensions in Indian hands
Direct answer: the core problem is a mismatch — countries like the US tax these accounts on withdrawal, while Indian rules can treat the accrual (growth inside the account) as taxable each year. Section 89A of the Income-tax Act lets a resident align Indian taxation with the year of withdrawal, removing the mismatch.
Section 89A applies to specified accounts in notified countries (currently the US, UK and Canada) and is opted into by filing Form 10-EE in the year you first become resident. Without the election, accrued interest, dividends and capital gains inside a 401(k) or IRA can be taxed in India year-on-year even though the US has not taxed them yet, creating a foreign-tax-credit timing gap. With the election, Indian tax follows the same event the US taxes, and the FTC matches up. Pensions paid out of foreign employers are taxable in India on receipt once you are ROR, subject to treaty allocation.
3. RSUs — grant, vest, sell — where each event is taxed
Direct answer: RSUs are taxed at vesting as employment compensation, and again at sale on the capital gain. The source country for vesting is allocated by where you worked over the grant-to-vest period; the source country for capital gain is your residency at sale.
For a returning NRI with grants made while resident in the US, vesting that happens after return is partly US-source (workdays in the US during the grant-to-vest period) and partly Indian-source. Both countries can tax their share, and the DTAA + foreign tax credit prevents double tax. The capital gain at sale is taxed by your country of residence at sale (India once you are resident), with a US sourcing wrinkle if shares were vested while you were a US person. Selling vested shares before you trigger Indian residency, or during the RNOR window, materially reduces the Indian footprint.
4. ESOPs and stock options — perquisite tax and the deferral trap
Direct answer: ESOPs are taxed in two stages — a perquisite on exercise (FMV minus exercise price, taxed as salary) and capital gain on sale (sale price minus FMV at exercise). For Indian-listed startups, perquisite tax can be deferred by up to five years, but the deferral has hard limits.
The deferral trap: the deferred tax becomes due on the earliest of five years from exercise, sale of the shares, or cessation of employment. For a returning NRI exercising foreign ESOPs, the perquisite is taxed where you were working during the grant-to-vest period and falls under Indian salary tax to the extent attributable to Indian workdays. Currency timing matters: FMV and exercise price are converted at the prescribed SBI reference rate on the relevant date, and a weak rupee inflates the perquisite.
5. Using the DTAA and foreign tax credit to avoid double tax
Direct answer: genuine double taxation is almost always avoidable — but only if you (a) source each income event correctly under the treaty, (b) file Form 67 in India to claim foreign tax credit, and (c) keep contemporaneous evidence of foreign tax paid.
Form 67 must be filed on or before the due date of the Indian return for the year in which the foreign income is offered to tax. Credit is allowed at the lower of the Indian rate on that income or the foreign tax actually paid. Country-specific allocation rules — Article 16 dependent services for salary, Article 18 for pensions, Article 13 for capital gains — sit on top of the credit mechanism. Our country hubs walk through the major corridors, and the US corridor and UK corridor cover the two most common returner profiles.
6. Reporting: Schedule FA once you are ordinarily resident
Direct answer: as soon as you become Resident and Ordinarily Resident, your foreign 401(k), brokerage accounts, vested shares, foreign-listed RSUs/ESOPs and any beneficial-ownership interests must be reported in Schedule FA — with Black Money Act exposure if you do not.
Reporting is at peak balance, closing balance and gross income during the calendar year that falls inside the relevant Indian financial year, in INR at the prescribed reference rate. During the RNOR window Schedule FA does not apply, which is one more reason to use it. Full mechanics — what counts as a foreign asset, how to value, and the penalties for omission — are in our Schedule FA & FATCA guide.