If you're an Indian-resident tech employee holding a large chunk of vested RSUs in your employer's US-listed stock, and the rupee has been sliding against the dollar, you've probably watched your RSU value in rupees climb even on days your stock didn't move. It's tempting to read that as good news, or even as a reason to hold on longer.
Short answer: a weaker rupee makes your RSU position look bigger in INR, but it does not make it any less concentrated. Those are two separate questions, and mixing them up is the mistake this post is about.
Table of contents
- The FX-translation effect on your INR net worth
- Why this doesn't reduce your concentration risk
- Where the exchange rate does matter for your filings
- A checklist for separating the currency question from the concentration question
The FX-translation effect on your INR net worth
Your RSUs are priced in US dollars. Every time you translate that dollar value into rupees, be it for your own net-worth tracking, a bank loan application, or your tax return, you're multiplying by whatever the exchange rate happens to be that day. When the rupee weakens against the dollar, the same dollar amount converts into more rupees. Nothing about the underlying shares changed; only the ruler you're measuring them with got longer.
This is also baked directly into how your RSUs get taxed. The taxable value of vested RSUs in India is computed as Number of Vested Shares × FMV per Share (USD) × the SBI TT Buying Rate (TTBR) on the applicable date. That INR figure is treated as a perquisite and taxed as part of your salary income. It then becomes your cost of acquisition for capital gains purposes when you eventually sell.
So the exchange rate on your vest date isn't a side detail, it's a direct input into both your tax bill and your reported net worth. A real example from a multi-lot vesting timeline shows this clearly: one lot vesting on 1 April 2025 (100 shares, $500 FMV) used an exchange rate of ₹85.60, giving a cost of acquisition of ₹42,80,000. A later lot vesting on 1 April 2026 (100 shares, $600 FMV) used ₹92.64, giving ₹55,58,400.
Some of that jump is the stock price going from $500 to $600. Some of it is the rupee weakening from ₹85.60 to ₹92.64 over the same window. They're two different sources of return, and only one of them has anything to do with your employer's business.
The specific TTBR used for your tax calculation is not whatever rate you see on Google or your broker's app that day. It's the SBI TT Buying Rate for a specific, rule-defined date, which for the RSU vesting perquisite is generally the vesting date itself, since RSU vesting almost always triggers immediate TDS withholding.
Live market rates fluctuate through the day and vary by provider, and even the RBI's own daily reference rate, which is widely quoted in financial news, is not the rate the Income Tax Act requires for this purpose. If you're tracking your RSU value casually, the gap between 'the rate I saw' and 'the rate that applies' is usually small. For tax filing, it isn't optional.
Why this doesn't reduce your concentration risk
Here's the part that's easy to miss. Concentration risk is about how much of your total wealth rides on the fortunes of one company. That exposure is measured in shares and in the company's own stock price, not in rupees.
A weaker rupee changes the number you see when you convert to INR. It does not change how many shares you own, what fraction of your net worth they represent, or how correlated your income (salary) and your biggest asset (RSUs) already are with each other.
Example. Suppose you're a product manager holding 500 vested shares of your employer's stock, currently trading at $300, alongside ₹30,00,000 in other INR-denominated savings (fixed deposits, EPF, and so on). A year ago the exchange rate was around ₹88/$. Today USD/INR is roughly ₹95/$. To isolate the currency effect, assume the stock price hasn't moved at all.
| A year ago (₹88/$) | Today (₹95/$) | |
|---|---|---|
| Shares held | 500 | 500 |
| Price per share (USD) | $300 | $300 |
| RSU position value (USD) | $150,000 | $150,000 |
| RSU position value (INR) | ₹1,32,00,000 | ₹1,42,50,000 |
| Other savings (INR) | ₹30,00,000 | ₹30,00,000 |
| Total net worth (INR) | ₹1,62,00,000 | ₹1,72,50,000 |
| Company stock as % of net worth | 81.5% | 82.6% |
The result: your net worth in rupees rose by roughly ₹10.5 lakh, but the share of it sitting in a single company's stock didn't fall. It actually ticked up slightly, because the RSU leg grew with the currency while your other, rupee-denominated savings stood still. A weaker rupee doesn't dilute concentration. If anything, it can quietly concentrate you further, because it inflates the one asset that's already oversized relative to everything else.
Now flip the scenario. A 20% drawdown in the stock price, which is a routine single-quarter move for a lot of tech stocks, wipes out about $30,000, or roughly ₹28.5 lakh at today's rate. That single move is nearly three times larger than the entire ₹10.5 lakh gain the rupee's move added over a full year.
Currency moves against the rupee have historically run at roughly 4-5% a year over long periods, though any single year can move more sharply, as the roughly 8% year-over-year depreciation this year illustrates. Either way, currency drift is a slow, single-digit-percentage tailwind or headwind. Single-stock price risk operates on a completely different scale and timeline.
Where the exchange rate does matter for your filings
None of this means the exchange rate is irrelevant, it just belongs in a different bucket than your concentration decision. Two places it shows up on your tax return, using different rules than your casual net-worth math:
- The vesting perquisite and cost basis. As above, computed using the TTBR generally applicable on the vesting date itself.
- Schedule FA disclosure. If you hold the shares in a foreign brokerage account, Schedule FA requires the Closing Value on 31 December to be calculated as shares held × market price on 31 December × the applicable SBI TTBR for that date. The Initial Value uses the TTBR on the exact acquisition (vest) date too, so for a typical RSU vest it lines up with the same rate used for the perquisite calculation.
These are compliance mechanics. They don't change how much single-stock risk you're carrying, they just determine the INR number that lands on your ITR.
A checklist for separating the currency question from the concentration question
Before you let a weak rupee talk you into holding (or a strong rupee talk you into selling), run through this:
- Split your return. Of the change in your RSU's INR value over the last year, how much came from the stock price and how much came from the exchange rate? If you can't answer this in five minutes, you're probably reacting to the combined number without realizing it.
- Check the percentage, not the rupee figure. What share of your total net worth sits in this one company's stock, right now? Has that percentage actually gone down over the past year, or just the rupee amount gone up?
- Ask if you have a currency view at all. Do you have an actual opinion on where the rupee is headed, independent of your opinion on your employer's stock? If not, FX noise shouldn't be a factor in your hold/sell decision either way.
- Compare the scales. What single-quarter move in your stock price would erase a full year of currency gains? For most concentrated tech positions, it's a smaller move than people expect.
- Apply the buy test. Would you buy this stock today, in this size, with fresh money? If the honest answer is no, a weaker rupee isn't a reason to keep holding what you already have.
