Arm Holdings RSUs in India: The Complete Tax & Wealth Guide

Arm in India: Offices, Cities & Scale

Arm India's primary engineering centre is in Bengaluru, where approximately 2,500 engineers work on CPU architecture, Mali GPU IP, physical IP design, and reference designs for automotive and IoT platforms. Arm's business model is unique in semiconductors — rather than manufacturing chips, Arm licenses its instruction set architecture (ISA) and CPU designs to virtually every major chip company in the world. This means Arm India engineers are working on the CPU cores (Cortex-A, Cortex-M, Cortex-X series) that end up inside Apple's A-series chips, Qualcomm Snapdragon, Amazon Graviton, NVIDIA Grace, and virtually every smartphone and embedded processor made today.

Noida contributes approximately 500 employees, primarily in software, tools, and developer ecosystem work. The Noida operation has a longer heritage — Arm has had a presence in Delhi/NCR for many years. Hyderabad adds another 500 employees in engineering and tools development.

Arm's IPO in September 2023 was a landmark event — the largest US tech IPO of 2023. SoftBank, which owns a large majority of Arm, sold approximately 10% of the company through the IPO at $51/share. ARM stock subsequently rose significantly, reaching above $160 before correcting. India employees who held pre-IPO RSUs experienced a direct wealth event. Post-IPO, new employees receive standard public company RSU grants.

• →Bengaluru (~2,500): CPU architecture (Cortex-A/M/X), Mali GPU IP, physical IP design, automotive/IoT reference designs
• →Noida (~500): Software tools, developer ecosystem, DevRel
• →Hyderabad (~500): Engineering, tools, systems software
• →Arm's IP is in virtually every smartphone and embedded processor globally — unique business model
• →September 2023 IPO at $51/share — pre-IPO employees had RSUs convert to public shares

Department Mix

Arm India is primarily CPU and GPU IP engineering. Microarchitecture development (designing the internals of CPU cores — out-of-order execution engines, branch predictors, cache hierarchies) is the most specialised and prestigious function. Physical IP (standard cell libraries, memory compilers, and I/O IP that chip companies need alongside the CPU architecture) is a commercial product function that Arm India owns end-to-end for certain process technologies.

Verification engineering (ensuring the CPU architecture is correct through simulation, formal verification, and silicon validation) is a large secondary function. Software tools — including the development environments, compilers, and performance profilers that Arm's licensees use to build software for Arm-based chips — are developed partially in India. Developer ecosystem and technical marketing support roles are growing as Arm's architecture expands into data centre (AWS Graviton, Microsoft Azure Cobalt) and automotive (Arm Total Compute for ADAS).

The intersection of Arm's architecture and AI is a growing engineering focus — designing CPU extensions and accelerator interfaces (specifically the Ethos neural processing units and the Arm Compute Library) for efficient AI inference at the edge. This aligns with the AI chip demand narrative that has driven ARM's stock premium.

• →Microarchitecture (CPU core design) is the most specialised and prestigious function
• →Physical IP design (standard cells, memory compilers) is a commercial product function
• →Verification engineering is a large secondary cluster
• →Arm AI extensions (Ethos NPU, Arm Compute Library) are a growing focus area

Who Gets RSUs: Levels & Amounts

Arm's equity culture has evolved significantly around the 2023 IPO. Pre-IPO, Arm operated as a private subsidiary of SoftBank, and RSU grants were made in a private company context — employees received options or RSUs in a private company with uncertain liquidity. The IPO created immediate liquidity for pre-IPO holders and established public market reference prices for new grants.

Post-IPO, RSU eligibility starts meaningfully at Grade 4 (Senior Engineer equivalent) and becomes significant at Grade 5 (Principal Engineer). At Grade 4, new hire RSU grants range from $30,000–$70,000 over four years. At Grade 5 (Principal Engineer), grants step up to $70,000–$140,000. Grade 6+ (Senior Principal and Distinguished Engineer) see $140,000–$300,000 in new hire equity. Fellow-level engineers have executive-adjacent compensation structures.

Arm's grant ranges are evolving — the company went through a significant compensation review post-IPO to ensure its equity remained competitive with the public company market. Some India employees who received pre-IPO RSU grants have legacy terms that differ from the current public company grant structure.

One important dynamic: SoftBank's majority ownership (approximately 88% post-IPO) means the float is very thin relative to market cap. This contributes to ARM's stock volatility — large institutional trades have outsized price impact. The thin float affects how the stock price responds to news and should factor into your risk assessment.

• →Grade 4+ is meaningful RSU eligibility threshold (post-IPO public company grants)
• →Grade 4 new hire: $30,000–$70,000 over 4 years
• →Grade 5 (Principal) new hire: $70,000–$140,000 over 4 years
• →Grade 6+ new hire: $140,000–$300,000 over 4 years
• →Pre-IPO legacy RSU holders: different grant terms than current post-IPO programme

Understanding Your Vest Schedule

Arm uses quarterly vesting with a one-year cliff for its current public company RSU programme. The standard structure: 25% vest at the one-year anniversary, followed by 6.25% per quarter through year four. This is the same as most US-listed semiconductor companies.

The IPO created a specific complexity for employees who held pre-IPO RSUs. When Arm IPO'd in September 2023, pre-IPO RSUs that had met their time-vesting conditions converted to publicly tradable shares. For Indian employees, this conversion was a taxable perquisite event — the value of shares on IPO listing day (or on the specific conversion date) is the perquisite income. Some employees had RSUs that were fully vested at IPO (these converted immediately to shares and created an immediate perquisite tax event); others had RSUs that were partially vested and continued vesting quarterly on the post-IPO schedule.

If you are a pre-IPO employee, it is essential to reconstruct your complete equity history: what was the conversion date, what was ARM's price on conversion date (IPO listing price, not the grant price), and have you correctly reported this as perquisite income in your FY2024 ITR? Many pre-IPO India employees may not have handled this correctly.

Post-IPO employees: your grants are straightforward public company RSUs with grant date, vest dates, and standard quarterly mechanics. The equity plan is managed through Fidelity NetBenefits or Morgan Stanley at Work depending on grant vintage.

• →Quarterly vest, 1-year cliff (post-IPO public company programme)
• →Pre-IPO employees: IPO/conversion was a taxable perquisite event — verify FY2024 ITR filing
• →Some pre-IPO employees had fully vested RSUs at IPO — immediate conversion and perquisite tax
• →Post-IPO employees: standard public company RSU mechanics, no legacy complexity
• →Equity plan via Fidelity NetBenefits or Morgan Stanley at Work

The Tax Reality

Arm India RSUs create perquisite tax on vest and capital gains on sale, with the added pre-IPO complexity described above.

For post-IPO employees on standard grants: on each quarterly vest, the market value of vested ARM shares (units × ARM closing price on vest date × SBI TT rate) is treated as perquisite income under Section 17(2). Added to salary, this is taxed at marginal rate. For Grade 4-5 engineers, effective rates including surcharge and cess range from 31-39% depending on total income. TDS is withheld via sell-to-cover.

Capital gains begin from vest date. Cost basis: vest-date ARM price × SBI TT rate. STCG within 24 months: slab rate. LTCG after 24 months: 12.5% without indexation. ARM stock has been extremely volatile post-IPO — ranging from $50 to $160+ — meaning the spread between different lots' cost bases is very large. LTCG optimisation across different lots is highly valuable.

Pre-IPO employees: your capital gains clock started on the IPO conversion date (September 2023 for most). Shares converted in September 2023 became LTCG-eligible in September 2025 — if you held those shares for 24 months post-IPO before selling, the gains qualify for LTCG treatment. Verify this with your CA — the pre-IPO to IPO transition creates a slightly non-standard timeline.

ARM's thin float makes the stock more volatile than fundamentals alone would suggest. This volatility creates more pronounced advance tax planning challenges — estimates made in April can be significantly off by December if ARM has moved 30-40% during the year.

File Form 67 before ITR; Schedule FA for foreign brokerage account; advance tax quarterly.

• →Post-IPO employees: standard perquisite + capital gains structure
• →Pre-IPO employees: capital gains clock started September 2023 (IPO conversion)
• →Pre-IPO September 2023 shares became LTCG-eligible in September 2025
• →ARM's thin float creates volatility beyond fundamentals — build advance tax buffers
• →Form 67 before ITR; Schedule FA annually; advance tax quarterly

What Employees Typically Do

Arm India employee equity behaviour falls into two distinct cohorts. Pre-IPO employees — those who experienced the RSU-to-shares conversion at the September 2023 IPO — had an extraordinary event. Many had watched their private company RSUs with uncertain value for years, and suddenly had liquid shares worth significant amounts. The initial reaction for many was to sell immediately after the lockup period ended (typically 180 days post-IPO, around March 2024), though those who held through the subsequent run-up to $160+ were rewarded further.

Post-IPO employees are on a more standard track. Many are still within their first two years of grants, meaning their positions are smaller and the equity situation is more straightforward. The novelty of public company equity for some employees (who had only known private company RSU dynamics at Arm before the IPO) means the tax and financial planning muscle is still being built.

The thin float means ARM stock moves in ways that feel disconnected from quarterly operational results. A large institutional investor buying or selling ARM stake can move the stock 5-10% without any operational news. This creates a somewhat fatalistic attitude among India employees — "I can't predict ARM's price movements," which is true, but which sometimes translates to excessive passivity rather than systematic planning.

CPU architects and physical IP designers at Grade 5-6 with 3-4 years tenure typically have ₹40-80 lakh in total RSU exposure.

• →Pre-IPO employees: many sold at lockup expiry (March 2024); those who held saw further upside
• →Post-IPO employees on standard track — equity planning muscle still being built
• →Thin float creates seemingly random price movements — breeds fatalism about predicting ARM price
• →Grade 5-6 with 3-4 years tenure: ₹40-80 lakh in total RSU exposure

The Smart Approach

For pre-IPO employees, the first priority is compliance verification. Confirm that FY2024 ITR correctly reported the IPO conversion as perquisite income. Confirm that any shares sold after IPO were correctly reported as capital gains with cost basis at IPO conversion price. If there are discrepancies, work with a CA on revised ITR filings — the exposure is large enough to warrant the cost.

For all Arm employees: build a lot-by-lot tracker. Given ARM's post-IPO price volatility (IPO at $51, rise to $160+, corrections in between), different lots have very different cost bases. For post-IPO employees, identify which quarterly vest lots are approaching or past the 24-month LTCG threshold. For pre-IPO employees, September 2023 conversion shares became LTCG-eligible in September 2025 — track this milestone.

Given ARM's thin float and volatility, advance tax planning requires explicit scenario analysis. At the start of each Indian FY (April), model three ARM price scenarios: current price, +40%, -40%. Calculate advance tax under each. Pay conservatively (middle scenario) and adjust each quarter. ARM can move more than 20% on a single analyst note or earnings release.

Diversification: ARM's premium valuation is built on AI chip proliferation through Arm-based architecture. Any shift in AI chip architecture (custom ASICs replacing CPU-centric designs, RISC-V gaining ground in embedded applications) would reprice the stock. Keep ARM below 20% of liquid net worth.

Use low-spread FX for repatriation; file 15CA/15CB quarterly; report Schedule FA annually.

• →Pre-IPO employees: verify FY2024 ITR compliance before anything else
• →Build lot-by-lot tracker — ARM's volatility creates very different cost bases across lots
• →Pre-IPO shares (September 2023) became LTCG-eligible September 2025 — track this
• →Advance tax: model ±40% ARM price scenarios and pay conservatively each quarter
• →Keep ARM below 20% of net worth — thin float amplifies downside in risk-off environments
• →15CA/15CB quarterly; low-spread FX; Schedule FA annually

Concentration Risk

Arm's risk profile is unusual in the semiconductor industry because it is both higher-risk and lower-risk than typical chip companies simultaneously. Lower risk because Arm's IP is embedded in virtually every mobile and embedded processor — diversification across thousands of chip designs globally. Higher risk because of structural threats that are longer-term but real.

RISC-V is the primary structural risk. RISC-V is an open-source, royalty-free instruction set architecture that is gaining traction in embedded, server (RISC-V in Chinese chips due to export controls), and potentially mobile applications. If RISC-V achieves critical mass in even one of Arm's core markets, the pricing power in Arm's licensing model is under pressure. This is a 5-10 year risk, not a quarterly risk, but it is real.

SoftBank's majority ownership creates an overhang risk. If SoftBank needs to monetise ARM shares for balance sheet reasons, additional secondary offerings would increase float and potentially depress ARM stock price temporarily. The thin float works both ways — it has driven ARM higher on limited buying, but a large SoftBank selldown could depress it on limited selling absorption.

The AI premium in ARM's valuation assumes that proliferating AI accelerator chips will be built on Arm-compatible architectures — Arm has announced royalty arrangements with major AI chip companies. If the AI chip architecture diversifies away from Arm (as some research chips already have), this premium would compress.

• →RISC-V is a genuine long-term structural risk — royalty-free alternative gaining traction
• →SoftBank majority ownership creates overhang risk of future large secondary offerings
• →Thin float amplifies both upside and downside price moves
• →AI chip proliferation through Arm architecture is the primary stock premium driver

Getting Money Home: FX & Repatriation

ARM sale proceeds from Fidelity NetBenefits or Morgan Stanley at Work are repatriated under LRS ($250,000 per FY). Arm India's 3,500-employee population is not exceptionally large, and most engineers will have clear headroom below the LRS limit on annual repatriation.

For pre-IPO employees who received significant share conversions in September 2023 and may have sold large positions after lockup, verify that all sales from FY2023-24 were correctly reported and that any repatriation above $5,000 had 15CA/15CB filings. The post-IPO compliance period is a potential audit risk area for employees who did not have proper guidance.

For ongoing repatriation: quarterly cadence aligned with quarterly vest schedule. Bank FX spread of 1.5-2.5% applies unless using a lower-spread alternative. Rovia's 0% markup on RSU repatriation eliminates the FX drag. Keep ARM stock transaction records, SBI TT rates on all vest dates and sale dates, and Fidelity/Morgan Stanley annual statements for ITR purposes.

• →LRS: $250,000/year — most Arm India employees have headroom
• →Pre-IPO employees: verify FY2024 repatriation had correct 15CA/15CB filings
• →Quarterly repatriation cadence aligned with quarterly vest schedule
• →15CA/15CB per remittance over $5,000; low-spread FX for repatriation

Stock Sentiment

Arm India employee sentiment has been on a positive trajectory since the September 2023 IPO, though it is more nuanced than the simple "stock went up" narrative. Pre-IPO employees who waited years for liquidity feel a sense of vindication — the IPO valued the company appropriately and the stock appreciated further. Post-IPO employees are watching ARM closely as a reflection of the broader AI chip narrative.

The CPU architecture community in India has a particular pride in Arm's position — virtually every major computing device uses Arm architecture, and engineers who have spent careers working on Cortex-A or Cortex-M cores have a justified sense of global impact. This engineering pride is a significant retention factor that goes beyond equity compensation.

The internal discussion around RISC-V is active and intellectually honest. Arm engineers understand the competitive threat from RISC-V and have thoughtful views on where Arm's IP moat is strongest (mobile performance, total IP package including GPU, security features, ecosystem) vs where RISC-V is making inroads (microcontrollers, research chips). This internal awareness does not translate to panic selling, but it does mean senior engineers are more thoughtful about holding beyond the 20% net worth threshold.

Departure patterns show that Arm's unique work (CPU microarchitecture design at the global frontier) retains talent that might otherwise move for higher pay at semiconductor companies with more aggressive equity. When departures happen, they tend to be toward Arm licensees (Qualcomm, Apple, Amazon Annapurna) who want CPU architects, or toward RISC-V startups (SiFive, Andes Technology, and several Bengaluru-based startups).

• →Pre-IPO employees: sense of vindication and satisfaction post-IPO — positive sentiment anchor
• →CPU architecture community has deep engineering pride — global impact narrative is powerful retention tool
• →Internal RISC-V discussion is active and intellectually honest — senior engineers are aware of the risk
• →Departures to Arm licensees (Qualcomm, Apple silicon teams, Amazon Annapurna) or RISC-V startups
• →Bengaluru RISC-V startup ecosystem is growing as an alternative destination for senior Arm engineers