ESOP vs RSU vs phantom stock, for India-US startups.

ESOP (stock option): A contractual right to buy a specified number of shares at a specified strike price, after a vesting period. Employee pays the strike price on exercise and becomes a shareholder. Upside is share-price-above-strike.

RSU (restricted stock unit): A contractual right to receive a specified number of shares (or their cash value) on vesting, with no strike price. Employee becomes a shareholder on vesting (or on a later settlement date). Upside is full share value at settlement.

Phantom stock: A contractual right to receive a cash payment equal to the share value (or appreciation above a reference price) on a vesting or liquidity event. Employee never actually holds shares; cash is paid at settlement. Upside is share-value-at-settlement, delivered as cash.

ESOP taxation in India (Section 17(2)(vi)):

• At grant: no tax.
• At vesting: no tax.
• At exercise: perquisite tax on the (FMV at exercise − strike price). Taxed at slab rates in the employee's hands. Employer deducts TDS.
• At sale of exercised shares: capital gains on (sale price − FMV at exercise). LTCG if held 24+ months (unlisted) or 12+ months (listed); STCG otherwise.

RSU taxation in India: treated as ESOP with zero strike price for tax purposes. At vesting / settlement, perquisite tax on full FMV (equivalent of exercise event for RSU is vesting / settlement). At sale, capital gains on (sale price − FMV at vesting).

Phantom stock taxation in India: no shares, no capital gains treatment. The cash payment at settlement is salary / bonus income, taxed at slab rates with TDS. No preferential capital-gains rate applies.

Different categories in the US:

• ISO (Incentive Stock Option): US-citizen or US-resident employees only. Favourable tax treatment — no regular tax at exercise (AMT only), long-term capital gains on sale if held 2 years from grant + 1 year from exercise.
• NSO (Non-qualified Stock Option): Any employee including non-US. Ordinary income tax on (FMV at exercise − strike) at exercise. Capital gains on subsequent sale from FMV at exercise basis.
• RSU: Ordinary income on FMV at vesting. Capital gains on sale from FMV at vesting basis.
• 83(b) election on founder restricted stock purchased at nominal price: lock in FMV at grant as the taxable amount (typically near-zero for day-one founders). Must file within 30 days.
• 409A valuation: required for US entities issuing options with strike price = FMV. Independent third-party valuation good for 12 months (or until a material event). Protects the company and employees from IRC 409A penalty for below-FMV options.

Indian startup with Indian employees, no US entity: ESOP under India's standard ESOP regulations. 24-month minimum vesting cliff for Section 17(2) treatment; typical pattern is 4-year vest with 1-year cliff. Trust structure (ESOP Trust) often used for parking unvested options.

Delaware C-Corp with Indian employees (post-flip or Delaware-first): NSOs for Indian employees (ISOs are US-citizen/resident only). 409A valuation required. Standard 4-year vest / 1-year cliff. Indian employees pay perquisite tax on exercise under Section 17(2); the Delaware entity has no India tax deduction obligation (the Indian subsidiary that employs the employee does, via re-charge).

Delaware C-Corp with US employees: ISOs for US-citizen/resident employees up to the USD 100K annual vesting limit; NSOs beyond that. 83(b) for founder restricted stock. 409A valuation annual.

Phantom stock scenario: useful where the company does not want to actually issue shares (regulatory restriction, cap-table hygiene, or private-held preference). Also used for key employees of an Indian subsidiary where issuing shares in the parent is impractical. Tax is salary-rate at settlement — worse than ESOP for employees in high-growth exits, so typically reserved for exceptional cases.