Before rolling out an ESOP, founders need to decide which instrument to use — because the choice between a stock option, phantom equity, and an RSU changes how the employee is taxed, how the company accounts for it, and the risk of it being reclassified as salary.
TL;DR – A stock option that carries real risk and cost for the beneficiary is treated by the TST (“Superior Labor Court,” Brazil’s highest labor court) as a commercial (non-salary) instrument — and that classification determines how the resulting gain is taxed. – Phantom equity and RSUs are treated differently: without real risk of loss for the employee, the Receita Federal (Brazil’s federal tax authority) tends to treat the payout as employment income. – The plan must be documented, approved at a shareholders’ meeting (for an S.A., a corporation) or a partners’ meeting (for a Ltda., a limited liability company), and contain the elements that TST case law considers central to supporting its commercial nature. – In an S.A., rolling out an ESOP is more straightforward; in a Ltda., it requires an alternative structure or a prior conversion. – Soluções de Consulta (“Consultation Rulings,” binding tax guidance issued in response to taxpayer inquiries) from COSIT (the General Coordination of Taxation, within the federal tax authority) issued between 2015 and 2024 point to a divergence between the tax authority and the TST that remains unresolved in law — this regulatory risk should stay on the radar.
Updated 06/18/2026. The tax treatment of stock options remains a matter of debate between the TST and the Receita Federal, with diverging positions still unsettled by legislation. Check the date on this page before making any structural decisions.
Table of Contents
- The ESOP that turned into a tax liability
- Stock options, phantom equity, and RSUs: what exists in Brazil
- Legal classification under the TST: commercial or salary-based?
- Taxation: when income tax applies and when it’s a capital gain
- What the option plan needs to include to hold up
- ESOP in an S.A. vs. a Ltda.: what changes in the structure
- Frequently asked questions
The ESOP that turned into a tax liability
A B2B tech startup with roughly 80 employees, in the middle of a Series A round, decided to roll out a long-term incentive plan (ILP) to retain the four senior engineers supporting its product. The plan was designed in a hurry: after two years with the company, employees would receive a cash bonus equivalent to the market value of 1% of the company each — calculated using an internal formula.
Two years later, during Series A due diligence, the lead investor’s advisor flagged the problem: the instrument chosen was phantom equity with no real risk of loss for the employee. The company would pay out the amount regardless of any fluctuation in value. The Receita Federal treats this type of structure as variable compensation — subject to INSS (social security contributions), withholding income tax (IRRF), and knock-on effects on vacation pay, the 13th-month bonus, and FGTS (the severance indemnity fund). The potential liability, adding up the four beneficiaries and related charges, reached seven figures. Closing was delayed while the parties negotiated a reserve or a price adjustment.
The problem wasn’t the incentive — it was the instrument. A stock option structure meeting the commercial-nature elements recognized by the TST would have had a stronger argument against reclassification — though with no guarantee of outcome, given the still-open divergence with the Receita Federal.
Stock options, phantom equity, and RSUs: what exists in Brazil
The market uses three main instruments to compensate employees based on the company’s appreciation in value. They follow different logics:
| Instrument | What it is | When the employee benefits | Real risk of loss? |
|---|---|---|---|
| Stock option | Right to buy shares at a fixed price (strike) in the future | Upon exercising the option and selling the shares | Yes — pays the strike price with no guarantee of appreciation |
| RSU (Restricted Stock Unit) | Promise to deliver shares or a cash equivalent after vesting | Upon vesting, receives shares or the cash equivalent | No — receives the value regardless of market price |
| Phantom equity | Right to a cash payment equivalent to the appreciation of notional shares | At a liquidity event or an agreed date | Depends on the structure — may or may not carry real risk |
Stock options in Brazil have no dedicated statute. The instrument is regulated by analogy to Law 6,404/1976 (the Brazilian Corporations Law) for *S.A.*s, and by TST case law as to its legal nature. Law 6,404/1976 expressly authorizes, in Article 168, §3, a company’s bylaws to provide for granting stock purchase options to officers and employees.
Phantom equity and RSUs operate on a contractual basis, without a specific legal foundation, and their tax treatment depends on the concrete structure of each plan — which makes them more exposed to reclassification.
Legal classification under the TST: commercial or salary-based?
The central question for any ESOP is this: is the employee’s gain from the option employment compensation (salary) or the result of an investment (a commercial gain)?
The answer determines everything: taxation, social security contributions, effects on labor entitlements, and the company’s liability.
The TST has settled on the understanding that a stock option has a commercial — not salary — nature when the plan combines three features simultaneously:
- Voluntariness: the employee freely chooses whether to participate in the plan and whether to exercise the option.
- Consideration (cost to the employee): the employee pays the exercise price (strike) with their own money, taking on the risk that the shares may not appreciate.
- Risk: there is a real possibility of loss — if the company’s value drops, the option becomes worthless, and the employee loses the strike price already paid.
This understanding is settled across multiple TST rulings, including decisions from the Specialized Subsection I on Individual Disputes (SDI-1), and serves as the benchmark that any option plan’s structure needs to follow.
When the TST reclassifies it as salary: when the plan guarantees the employee will never suffer a loss (through a guaranteed buyback at the strike price, for example), when the strike price is so nominal that it doesn’t represent a real cost, or when the option is automatically exercised and settled without any decision by the employee. In these cases, the gain is treated as compensation — with all the resulting tax and labor consequences.
The divergence with the Receita Federal: the TST’s position on commercial nature doesn’t automatically bind the tax authority. Some Soluções de Consulta issued by COSIT have treated the gain on share acquisition as employment income, taxable under the progressive personal income tax table. This regulatory divergence has not yet been resolved by legislation and represents the main compliance risk for any ESOP in Brazil.
Taxation: when income tax applies and when it’s a capital gain
For a stock option whose commercial nature is recognized, the timing and form of taxation depend on two distinct events:
Event 1: exercising the option (acquiring the shares)
The employee pays the strike price and receives the shares. If the option has commercial nature under TST case law: – There is no withholding income tax (IRRF) due on exercise (the prevailing position in labor case law). – The shares’ cost basis is the strike price paid. – There are no effects on FGTS, INSS, or labor entitlements.
The Receita Federal’s position, in some Soluções de Consulta issued by COSIT, differs: the gain on exercise (the difference between market value and the strike price) could be taxed as employment income at the time of acquisition. This divergence is the central knot in tax planning for ESOPs in Brazil.
Event 2: selling the shares
When the employee sells the shares acquired through exercise: – The capital gain (the difference between the sale price and the acquisition cost — the strike price) is taxed under personal income tax rules as a capital gain. – The rate follows the progressive capital gains table: 15% up to R$5 million in gains, 17.5% between R$5 million and R$10 million, 20% between R$10 million and R$30 million, and 22.5% above R$30 million (Law 13,259/2016). – Payment is made via DARF (the federal tax payment form), and it’s the employee’s own responsibility — not the company’s.
Phantom equity: without real risk of loss, the payment is treated as variable compensation. The company withholds income tax at source, remits INSS contributions (both employer and employee portions), and factors the amount into vacation pay, the 13th-month bonus, and FGTS, as applicable to the employment relationship.
What the option plan needs to include to hold up
Properly documenting the plan is part of the structuring work — not red tape. The elements that TST case law and due diligence practice consider essential:
- Formal approval. In an S.A., the plan is approved at a shareholders’ general meeting (Law 6,404/1976, Art. 168, §3). In a Ltda., it’s approved at a partners’ meeting with minutes on record. A plan lacking formal corporate approval weakens its commercial nature.
- Individual grant agreement. Each beneficiary receives a grant agreement specifying: number of options granted, exercise price (strike), vesting schedule, option expiration date, exercise conditions, and what happens to the options upon termination.
- Justified exercise price. The strike price needs to reflect a real value — ideally backed by a fair value appraisal of the share on the grant date, or an objective formula. A strike price of R$0.01 in a company worth R$50 million raises the presumption that there is no real risk of loss.
- Vesting with a cliff. The vesting cliff (typically 12 months) and the gradual vesting schedule (4-year vesting is the market standard) need to be documented and genuine — not retroactive or automatically accelerated upon any termination.
- Termination conditions. What happens to unexercised options in the case of termination without cause, termination for cause, death, or disability? Plans that leave this open end up in litigation. The treatment for a “for cause” exit versus a “good leaver” exit should be clearly defined.
- No guaranteed liquidity. The plan cannot provide that the company will buy back the shares at market price under any circumstances, because that eliminates the risk of loss and destroys the commercial nature of the instrument.
- Rules for liquidity events. What happens to unexercised options in the case of an IPO, a company sale (M&A), or a merger? Vesting acceleration in these events should be provided for — and limited — within the plan.
ESOP in an S.A. vs. a Ltda.: what changes in the structure
Most Brazilian startups start out as a Ltda.. The Brazilian Corporations Law (Law 6,404/1976) is the only statute that explicitly addresses stock options in Brazil. This creates an important practical asymmetry.
In an S.A.: – Article 168, §3 of Law 6,404/1976 expressly authorizes a stock purchase option plan. – Shares can be issued from treasury or through an authorized capital increase. – The exercise mechanics (share subscription) are provided for by law. – Foreign investors and venture capital funds tend to prefer the S.A. structure because of its standardized instruments.
In a Ltda.: – There is no provision equivalent to Article 168, §3 of Law 6,404/1976. – The Civil Code (Articles 1,052 to 1,087) makes no provision for options over quotas. – Alternatives used in practice include: (a) phantom equity or a bonus tied to value appreciation, structured as variable compensation; (b) converting the Ltda. into an S.A. before rolling out the plan; (c) using an S.A. holding company as the vehicle for the ESOP, with the operating Ltda. remaining as a subsidiary.
The market trend is to convert to an S.A. before the Series A round, once the company needs a structured ESOP and a cap table with standardized instruments for institutional investors. This conversion has its own cost and timeline — and planning for it in advance is less costly than doing it under the pressure of closing a round.
Frequently asked questions
Does an employee who exercises a stock option pay social security contributions (INSS)?
For a stock option with recognized commercial nature — voluntary, requiring payment from the employee, and carrying real risk of loss — the prevailing understanding in labor case law is that INSS contributions do not apply to the gain, because it is not employment compensation. Social security contributions apply to “compensation” as defined under Law 8,212/1991 and Decree 3,048/1999 (the Social Security Regulations), and a gain of a commercial nature does not fall within that concept. That said, the Receita Federal has already issued Soluções de Consulta taking a different position. This is the main tax risk of an ESOP in Brazil: the divergence between the TST’s position and the tax authority’s position has not yet been resolved by legislation. Plans structured with all the elements supporting commercial nature have a stronger argument for defending non-taxation — but the regulatory risk exists and should be monitored, especially for companies planning to go public or undergo in-depth due diligence. This is general information and does not replace consulting a lawyer to analyze your specific case.
What happens to an employee’s stock options if the startup is sold before vesting is complete?
It depends on what the option plan provides for — and this is a point that founders and employees rarely discuss when the agreement is signed. There are three typical outcomes in M&A events: (1) full vesting acceleration (single-trigger), where all options vest immediately upon a change of control; (2) partial or conditional acceleration (double-trigger), where vesting only accelerates if the employee is also terminated following the deal; and (3) conversion of the options into equivalent instruments of the acquiring company. Each of these outcomes has a different impact on the value the employee receives and on what the acquirer pays. For founders, the choice matters: full acceleration in any M&A scenario can make the deal more expensive and complicate negotiations with buyers. Market practice for key employees is double-trigger acceleration — vesting only accelerates if there’s also a termination without cause. This protects the employee against a forced exit and gives the acquirer time to retain the team. This is general information and does not replace consulting a lawyer to analyze your specific case.
Is it possible to implement an ESOP for the founders themselves, not just for employees?
Yes, and the structure for founders has important particularities. Founders who are already partners don’t “receive” options from the company — they already hold an equity stake. A founder ESOP mainly serves two scenarios: (a) reverse vesting, where a founder transfers quotas or shares to the company subject to buyback if they leave before an agreed period, protecting co-founders and investors from a founder who leaves early but keeps their entire stake; and (b) new options granted over treasury shares or authorized capital, usually as part of an incentive realignment in later funding rounds. Founder reverse vesting is strongly recommended by the TST — not for tax reasons, but because of the corporate risk of a founder leaving with a significant stake while leaving behind the company without the work that would have justified that share. Series A investors typically require founders to have formalized vesting as a condition of investment. The legal structure depends on the entity type: in an S.A., it’s done through a shareholders’ agreement with a buyback clause; in a Ltda., through the articles of association or a partners’ agreement (Civil Code, Article 997 et seq., and Articles 1,052 to 1,087). This is general information and does not replace consulting a lawyer to analyze your specific case.
The information in this article is general and educational in nature. It does not constitute legal advice for any specific situation and does not replace an attorney’s analysis of your particular case.
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Alessandra De Paula Souza — OAB/PR 31.133 Focused on tax and corporate planning and the structuring of long-term incentive plans for startups and growth-stage companies. Full profile
This is general information and does not replace consulting a lawyer to analyze your specific case.