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How the Math Works
ESOP taxation has three distinct phases:
| Phase | Tax | Rate |
|---|---|---|
| Perquisite (at exercise) | Slab rate | 0% to 42% |
| Listed (STT): STCG < 12mo / LTCG ≥ 12mo | 20% / 12.5% | Flat |
| Unlisted: STCG < 24mo / LTCG ≥ 24mo | Slab rate / 12.5% | — |
TOOL
ESOP Tax Calculator
Calculate perquisite tax, deferral eligibility, and capital gains on ESOP exercises. Covers both pre-1 Apr 2026 (48mo) and post-1 Apr 2026 (60mo) allotments. FY 2026-27.
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Your Deferred Amounts
Calculate above to see your deferred amounts.
What each input means
- Annual salary — your current taxable salary, used to set the slab base the perquisite sits on.
- ESOPs exercised, grant price, FMV at exercise — perquisite value is (FMV at exercise − grant price) × shares.
- FMV at sale — optional. Leave blank if you have not sold; the tax then stops at the perquisite.
- Exercise year — sets the deferral-window start (end of that FY).
- Allotment date — before 1 Apr 2026 gives a 48-month deferral window; on/after, 60 months.
- Share type & holding period — decide whether a later sale is STCG or LTCG and its rate.
- DPIIT / IMB — both must be ticked for perquisite deferral to apply.
Assumptions
- The perquisite is computed on the FMV at exercise, not at vesting or at grant.
- Perquisite tax uses the new-regime slab on salary plus any non-deferred perquisite; rebate (87A) applies below ₹12 lakh taxable income.
- Sale-side capital gains use the exercise FMV as the cost base, and the holding period runs from exercise.
- Deferral requires both DPIIT recognition and IMB certification; the window is 48 months (pre-1-Apr-2026) or 60 months (on/after).
- Listed-share gains assume STT was paid on the sale.
- Figures are estimates at FY 2026-27 rates and add cess only on the capital-gains portion, not re-limiting the perquisite.
Worked example — the default inputs
Salary ₹20,00,000. 1,000 shares, grant ₹10, exercise FMV ₹500. DPIIT + IMB ticked (allotment pre-2026 so a 48-month window).
- Perquisite = (₹500 − ₹10) × 1,000 = ₹4,90,000
- Deferral eligible → perquisite not added to current-year income; payable at the earlier of sale, exit, or Mar 2031.
- No sale value yet, so no capital-gains side.
If sold later at FMV ₹800, listed with ≥ 12 months' holding: appreciation = (₹800 − ₹500) × 1,000 = ₹3,00,000 × 12.5% = ₹37,500.
Limitations
- Perquisite tax is computed at slab but without the 4% cess line on that amount — treat the total as pre-cess.
- Deferral eligibility assumes your employer is actually DPIIT/IMB certified; the tool trusts the toggles.
- If you leave before the window expires, tax falls due early — the tool shows the deadline but does not model mid-window triggers.
- Indexation is not applied to unlisted LTCG (post-23-Jul-2024 rules apply without it).
- Surcharge and marginal relief are not applied.
- Not tax advice. Confirm the exercise FMV from a merchant banker's valuation and your regime with a CA.
Questions people actually ask
When is ESOP income taxed — at grant, vesting, or exercise?
At exercise, as a perquisite. The taxable value is Fair Market Value at exercise minus grant price, times shares. Grant and vesting are tax-neutral. Only at exercise (and again on any later sale) does tax arise.
What is the perquisite value exactly?
(FMV at exercise − grant price) × number of shares. With grant ₹10, exercise FMV ₹500, and 1,000 shares, the perquisite is ₹4,90,000. This is added to salary as salary income unless you qualify for deferral.
Who gets the 48-month vs 60-month deferral?
Eligible startup ESOPs where the employer is DPIIT-recognized and IMB-certified defer perquisite tax for 48 months (allotment before 1 Apr 2026) or 60 months (on/after 1 Apr 2026) from the end of the exercise year. Tax falls due when you sell, leave, or the window expires — whichever is earliest.
What tax rate applies to the perquisite?
The perquisite sits in your salary and is taxed at slab. This tool applies the new-regime slab to salary plus any non-deferred perquisite. Your actual rate depends on total income and regime.
How is the eventual sale of shares taxed?
As capital gains on the appreciation since exercise. Listed shares with STT: LTCG (12+ months) at 12.5%, STCG at 20%. Unlisted shares: LTCG (24+ months) at 12.5%, STCG at slab. The cost base is the exercise FMV, not the grant price.
Does deferral make the tax go away?
No — it postpones it. The perquisite tax is unchanged in amount; only the payment date moves. The 48/60-month window is a cashflow benefit, not a deduction.
Estimate only
Perquisite tax timing (deferral windows, exit triggers, AMT interplay) is governed by your specific grant letter and DPIIT/IMB status. The numbers here are indicative. Confirm with the company's tax counsel or a CA before exercising.