ESOP Tax Calculator
Salary tax at exercise, capital gains at sale, and the cost basis most calculators get wrong.
- Perquisite — (₹500.00 − ₹100.00) × 1000
- ₹4,00,000.00
- Cost basis for the sale — the FMV, not what you paid
- ₹5,00,000.00
- Capital gain — (₹800.00 − ₹500.00) × 1000
- ₹3,00,000.00
- Total tax
- ₹1,41,875.00
- Tax as salary
- ₹1,20,000.00
- Tax as capital gains
- ₹21,875.00
- You keep
- ₹5,58,125.00
FY 2026-27. There are two taxable events. At exercise for an ESOP, at vest for an RSU, or at purchase for an ESPP, the discount to fair market value is a salary perquisite taxed at your slab, with TDS deducted by your employer. At sale, the rise since that date is a capital gain. The holding period runs from allotment — not from grant, and not from the gap between vest and exercise. For an unlisted company the FMV must come from a SEBI Category-I merchant banker, dated no more than 180 days before the exercise; for a listed one it is the average of the opening and closing price on the exercise date. Foreign-listed shares are unlisted securities for Indian tax: 24 months to long-term rather than 12, no ₹1.25 lakh exemption, and short-term gains at your slab rather than the 20% that requires STT on an Indian exchange. Holders of foreign shares must also convert using the SBI TT buying rate — for the perquisite this is normally the vest date, which is what your Form 16 uses, and for the sale it is the last day of the month before the month of transfer. Foreign holdings must be disclosed in Schedule FA, which is reported on a calendar year (1 January to 31 December) rather than the financial year, with no minimum threshold — a very common filing error. Employees of a DPIIT-recognised startup holding a section 80-IAC certificate may defer the perquisite tax to the earliest of 48 months from the end of the assessment year of allotment, the sale of the shares, or leaving the company.
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Independent · No commissions · No fund-house data — how the numbers are computed
How it works
Employee stock options are taxed twice, at two different events and under two different heads. At exercise, the gap between the fair market value and the price you pay is a salary perquisite, taxed at your slab rate with TDS deducted by your employer. At sale, the rise since the exercise date is a capital gain.
The cost basis for that second event is the fair market value at exercise, not the exercise price. Using the exercise price is the most common bug in ESOP calculators, and it taxes the spread a second time after your employer has already deducted TDS on it.
The holding period runs from allotment, not from grant and not from the gap between vest and exercise. For a listed company the FMV is the average of the opening and closing price on the exercise date; for an unlisted one it must come from a SEBI Category-I merchant banker, dated no more than 180 days before.
Perquisite = (FMV at exercise - exercise price) x shares, taxed at slab. Capital gain = (sale price - FMV at exercise) x shares, taxed at the rate for the holding period from allotment.For shares listed in India the gain is long-term after 12 months at 12.5%, with the ₹1.25 lakh exemption. For unlisted or foreign-listed shares it takes 24 months, the exemption does not apply, and short-term gains are taxed at slab rather than 20%.
Frequently asked questions
What is the cost basis when I sell ESOP shares?
The fair market value on the exercise date — the same figure your employer used to compute the perquisite. Not the exercise price you actually paid. The difference between them has already been taxed as salary, so treating the exercise price as your cost would tax that spread twice. Your Form 16 will show the perquisite value, which is the number to use.
Can I defer the tax at exercise if I work for a startup?
Only if your employer is a DPIIT-recognised startup that also holds a valid Section 80-IAC certificate from the Inter-Ministerial Board — DPIIT recognition alone is not enough. The tax is then due within 14 days of the earliest of 48 months from the end of the assessment year of allotment, the sale of the shares, or your leaving the company. It is a deferral of timing only: the tax is computed at the rates of the year of exercise.
When does the holding period start?
At allotment — the date the shares are actually issued to you after exercise. Not at grant, and not at vest. The time between grant and exercise does not count, which is why exercising early and holding can turn what would have been a short-term gain into a long-term one by the time you sell.