Stock options, BSPCE and RSUs in Paraguay: a complete strategy for exercising and selling at 0% in 2026
You hold stock options, BSPCE (Bons de Souscription de Parts de Créateur d'Entreprise - Founder Share Subscription Warrants), AGA (Actions Gratuites / RSU - Free Shares / Restricted Stock Units) or BSA (Bons de Souscription d'Actions - Share Subscription Warrants) granted by your French or international company. These instruments are potentially your most valuable asset — but also the most complex to manage fiscally when you expatriate. The capital gain on exercise or acquisition can represent hundreds of thousands, or even millions, of euros. And France doesn't easily give up its share.
The taxation of stock options and BSPCE during expatriation is the most technical and misunderstood subject in international mobility. Tens of thousands of euros can be lost due to poor structuring or timing. This guide details the rules applicable in 2026, critical pitfalls, and the optimal strategy for exercising and selling your instruments from Paraguay.
Reminder: Employee incentive plans and their French taxation
Stock options
- Grant: The company grants you the right to purchase shares at a fixed price (exercise price / strike price)
- Exercise: You purchase shares at the exercise price → the difference between market value and exercise price = gain on option exercise (capital gain on exercise)
- Sale: You sell the shares → the difference between sale price and value at exercise = capital gain on sale
- Taxation for French residents: Gain on exercise taxed as salary (progressive tax scale up to 45% + social security contributions 17.2% + specific employee contribution) OR special regime if qualifying plans (reduced rate ~30% under conditions). Total effective rate: often 50-65% on the gain on exercise.
BSPCE (Bons de Souscription de Parts de Créateur d'Entreprise - Founder Share Subscription Warrants)
- French specificity: Reserved for young companies (< 15 years old) and innovative companies
- Taxation for French residents: Capital gain taxed at PFU 30% (flat tax) if the beneficiary has been employed by the company for 3+ years at the time of sale. Otherwise: progressive tax scale (up to 45% + 17.2% social security contributions)
- BSPCE advantage: No social security contributions (neither employee nor employer) on the gain — unlike stock options. This is what makes BSPCE so popular in startups.
AGA / RSU (Actions Gratuites / Restricted Stock Units - Free Shares / Restricted Stock Units)
- Free grant: No exercise price. The company "gives" you shares after a vesting period
- Acquisition gain: Value of shares on the day of definitive acquisition
- Taxation for French residents: Acquisition gain taxed at the progressive scale after a 50% allowance (if held for > 2 years after acquisition) + 10% employee contribution. Capital gain on sale at PFU 30%.
BSA (Bons de Souscription d'Actions - Share Subscription Warrants)
- Acquisition: Purchase of the warrant at a determined price
- Exercise: Conversion of the warrant into shares at the exercise price
- Taxation: Capital gain on sale at PFU 30% or progressive scale
The key principle: France / Paraguay allocation based on the period of activity
The apportionment rule
This is the most important rule to understand. When you exercise or sell stock options/BSPCE/AGA after your expatriation, the capital gain is apportioned between the countries where you carried out your activity during the vesting period:
- France's share: Proportional to the number of days worked in France between the grant date and the exercise date (or acquisition date for AGA)
- Paraguay's share: Proportional to the number of days worked in Paraguay during the same period
Concrete example
Marie receives stock options on January 1, 2022 (4-year vesting). She expatriates to Paraguay on January 1, 2025 (3 years in France, 1 year in Paraguay). She exercises on January 1, 2026. Gain on exercise: €400,000.
- France's share: 3 years out of 4 = 75% × €400,000 = €300,000 → taxable in France
- Paraguay's share: 1 year out of 4 = 25% × €400,000 = €100,000 → taxable in Paraguay (= 0% by territoriality if foreign source)
French taxation on France's share (€300,000):
- If qualifying plan: ~30% = €90,000
- If non-qualifying plan: progressive scale + social security contributions = ~50-60% = €150,000-€180,000
Total tax: €90,000-€180,000 instead of €200,000-€240,000 if exercised as a French resident. Immediate saving: €20,000-€60,000 (Paraguay's share at 0%).
Optimization through timing
The longer you wait to exercise after your departure to Paraguay, the more the "Paraguay's share" increases:
| Scenario (grant 2022, 4-year vesting) | France's Share | Paraguay's Share (0%) | Savings on €400k gain |
|---|---|---|---|
| Exercise after 3 years in France + 1 year in PY | 75 % | 25 % | ~€30,000-€60,000 |
| Exercise after 3 years in France + 2 years in PY | 60 % | 40 % | ~€48,000-€96,000 |
| Exercise after 3 years in France + 3 years in PY | 50 % | 50 % | ~€60,000-€120,000 |
| Exercise after 3 years in France + 5 years in PY | 37,5 % | 62,5 % | ~€75,000-€150,000 |
Each additional year in Paraguay before exercise increases the untaxed portion. This is the most powerful lever for optimization: patience = savings.
BSPCE: The most favorable case for the expatriate
Why BSPCE are the most optimizable
BSPCE have a unique advantage over traditional stock options:
- No social security contributions on the gain (neither employee nor employer) — unlike stock options where charges may apply
- Flat tax 30% for France's share (if exercised > 3 years after joining the company) vs. progressive scale for non-qualifying stock options
- Identical apportionment: The France/Paraguay allocation rule applies as for stock options
The optimal BSPCE scenario from Paraguay
Pierre, CTO of a French startup, receives BSPCE in 2021 (4 years vesting). He expatriates to Paraguay in 2024. The startup is acquired in 2027 (exit). Total gain: €1,200,000.
- Period in France: 3 years (2021-2024)
- Period in Paraguay: 3 years (2024-2027)
- France's share: 50% × €1,200,000 = €600,000 → flat tax 30% = €180,000
- Paraguay's share: 50% × €1,200,000 = €600,000 → 0%
- Total tax: €180,000
If Pierre had remained in France: €1,200,000 × 30% = €360,000 tax. Savings thanks to Paraguay: €180,000. And if he had waited 2 more years (exit in 2029, 5 years in PY vs. 3 years in FR): France's share = 37.5%, total tax = €135,000. Savings: €225,000.
Stock options: more complex but optimizable
Stock options from qualifying vs. non-qualifying plans
- Qualifying plans (post-2012, conditions met): Gain on exercise taxed at the progressive scale after a 50% allowance (if held > 2 years post-exercise + 4 years post-grant) + social security contributions. Effective rate: 25-35%.
- Non-qualifying plans: Gain on exercise taxed as salary (progressive scale 0-45% + social security contributions 17.2% + specific contribution). Effective rate: 50-65%.
Impact of expatriation on stock options
- Apportionment identical to BSPCE
- France's share is taxed according to the applicable regime (qualifying or non-qualifying)
- Paraguay's share is 0% (territoriality)
- If a non-qualifying plan: the savings through apportionment are even more massive (50-65% French rate vs. 0% PY)
The case of stock options from American companies
If your stock options come from an American company (GAFAM, US startups):
- ISO (Incentive Stock Options) and NSO (Non-Qualified Stock Options) have different treatments
- France-US tax treaty applicable for apportionment
- No Paraguay-US tax treaty: Paraguay's share is not taxed in the US (non-resident without US source income if options are not related to US activity)
- Potential US withholding on exercise → recoverable if structured correctly
- Consultation with a US CPA is essential for American options
AGA / RSU: The pitfall of the acquisition date
Specificity of free shares
For AGA/RSU, the critical date is the definitive acquisition date (end of the acquisition/vesting period), not the exercise date:
- The acquisition gain is apportioned according to the countries of residence during the acquisition period
- If you leave France BEFORE the end of vesting: a portion of the gain is attributable to Paraguay
- If vesting is completed BEFORE your departure: 100% of the acquisition gain is French (no apportionment possible)
Critical timing for AGA
If your AGA vests in tranches (25% per year over 4 years), leave France BEFORE full vesting:
- Years 1-2 in France (50% vested in France): acquisition gain France = 50%
- Years 3-4 in Paraguay (50% vested in Paraguay): acquisition gain Paraguay = 50% → 0%
If you leave AFTER full vesting: 100% of the gain is French. No further possibility of apportionment on the acquisition gain. Only the capital gain on sale (difference between sale price and value at vesting) can benefit from Paraguayan residency.
Exit tax on stock options and shareholdings
Does exit tax apply to stock options?
The exit tax (article 167 bis CGI) applies to latent capital gains on shareholdings > €800,000 or > 50% of the capital. For stock options and BSPCE not yet exercised at the time of departure:
- Unexercised stock options: No exit tax (no latent capital gain since no shares held). The exit tax applies to shareholdings held, not to unexercised option rights.
- Shares held after exercise: If you exercised your options and held the shares BEFORE leaving, latent capital gains on these shares are subject to exit tax if > €800,000.
- Unexercised BSPCE: Same logic — no exit tax on unexercised warrants.
- Vested but unsold AGA: The acquisition gain is already crystallized at vesting. If you hold the shares, the latent capital gain on sale may be subject to exit tax if > €800,000.
Exercise strategy and exit tax
- If possible: do not exercise before leaving → no shares held → no exit tax → exercise in Paraguay after departure = apportionment + 0% on PY share
- If already exercised and shares held: Exit tax applicable on latent capital gain > €800k. Deferral of payment under conditions (tax representative + guarantees). Relief after 2 or 5 years if shares are retained.
For more details on exit tax, see our exit tax guide.
Complete practical cases
Case 1: French startup BSPCE, €800,000 exit
Léa, product manager, BSPCE received 2021, 4-year vesting, exercise at exit in 2027. Expatriation to Paraguay 2024. Total gain €800,000.
| Item | If remained in France | With expatriation to Paraguay 2024 |
|---|---|---|
| Total gain | €800,000 | €800,000 |
| France's share (3 years out of 6) | 100% = €800,000 | 50% = €400,000 |
| Paraguay's share | 0% | 50% = €400,000 |
| French tax (flat tax 30%) | €240,000 | €120,000 |
| Paraguayan tax (0%) | — | €0 |
| Total tax | €240,000 | €120,000 |
| Net in pocket | €560,000 | €680,000 |
Savings: €120,000. If Léa had waited until 2028 (4 years in PY): France's share = 42.8%, tax = €102,800, savings = €137,200.
Case 2: Non-qualifying stock option plan, €2,000,000 exercise
Marc, sales director, stock options granted 2020, 4-year vesting. Expatriation to Paraguay 2023 (3 years in France). Exercise 2026 (3 years in PY). Gain on exercise €2,000,000.
| Item | If remained in France | With expatriation to Paraguay |
|---|---|---|
| France's share (3 years out of 6) | 100% | 50% |
| French tax (progressive scale 45% + social security contributions 17.2%, non-qualifying plan) | ~€1,100,000 (~55%) | ~€550,000 (on €1M France's share) |
| Paraguayan tax | — | €0 |
| Total tax | ~€1,100,000 | ~€550,000 |
| Net | ~€900,000 | ~€1,450,000 |
Savings: €550,000. Expatriation to Paraguay literally doubled Marc's net income from his stock options.
Case 3: GAFAM AGA/RSU vested progressively, sale at €500,000
Sophie, engineering manager at a GAFAM, RSU granted 2022, 4-year vesting in annual tranches (25%/year). Expatriation to Paraguay 2024 (2 years in France, 2 years vesting remaining in PY). Total sale in 2027.
- Tranche 1 (2023, vested in France): gain €125,000 → 100% France → progressive scale + 50% allowance = ~€40,000 tax
- Tranche 2 (2024, vested in France before departure): gain €125,000 → 100% France → ~€40,000 tax
- Tranche 3 (2025, vested in Paraguay): gain €125,000 → 0% France, 0% Paraguay = €0 tax
- Tranche 4 (2026, vested in Paraguay): gain €125,000 → 0% = €0 tax
- Capital gain on sale (2027, sale in Paraguay): eventual differential → 0% in Paraguay
Total tax: ~€80,000 (instead of ~€160,000 if she had remained in France). Savings: ~€80,000.
Critical pitfalls to anticipate
The pitfall of exercising BEFORE departure
If you exercise your stock options or BSPCE before leaving France: 100% of the gain is French. No apportionment possible. The most costly mistake: exercising your options the day before departure "to be done with it." Wait until you are in Paraguay to exercise.
The pitfall of the absence of a France-Paraguay tax treaty
There is no double taxation treaty between France and Paraguay. Consequence:
- Apportionment is based on internal French rules (not on a treaty)
- France taxes its share according to its internal law
- Paraguay does not tax (territoriality)
- No risk of double taxation (Paraguay does not tax), but no tax credit either
- Apportionment follows BOFIP comments and French administrative practice
The pitfall of withholding tax on exercise
For stock options from French companies, the employer may be required to levy a withholding tax on the gain on exercise, even for a non-resident. This withholding is calculated on France's share of the gain. Anticipate the withholding procedure and the apportionment calculation with your employer.
The pitfall of reclassified "carried interest"
If your founder share warrants (BSPCE) or stock options are structured in an atypical way (performance conditions, hurdle rates, etc.), the tax authorities may try to reclassify the gain as "carried interest" (Article 150-0 B ter of the French Tax Code) with a different tax treatment. A case-by-case analysis is mandatory.
The Trap of Declarative Compliance
Even as a non-resident in Paraguay, you must:
- Declare your French-source gains to the SIP (Service des Impôts des Particuliers) non-residents
- Provide the calculation of the split with supporting documents (grant dates, periods worked in France/Paraguay)
- Pay the duties on the French portion within the deadlines
- Keep all documents (grant agreement, plan, dates, calculations) for at least 10 years
The Optimal Comprehensive Strategy
Phase 1: Before Departure (12-18 months prior)
- Complete inventory of all your instruments (stock options, BSPCE, AGA, BSA): grant dates, vesting schedules, exercise prices, estimated valuation
- Provisional calculation of the split according to different exercise date scenarios
- Determination of the optimal departure timing to maximize the Paraguay portion
- Exit tax verification if shares already held > €800,000
- Consultation with an international mobility tax specialist specializing in equity compensation
Phase 2: Departure
- Transfer tax residency to Paraguay (cédula, address, RUC)
- Do not exercise options before departure
- Inform the employer of your change of tax residency
- Update HR documents (address, non-resident tax status)
Phase 3: In Paraguay (maximize the PY portion)
- Wait as long as possible before exercising (each additional month in PY increases the 0% portion)
- If exit (company buyout): timing is imposed — simultaneous exercise and sale. The split is calculated up to the exit date.
- If voluntary exercise: choose the optimal time (ideally after 2-5 years in PY)
- If AGA vesting in tranches: tranches vested in PY = 0% automatically
Phase 4: Exercise and Sale
- Exercise of options / exercise of BSPCE
- Calculation of the France/Paraguay split
- Declaration and payment of the French portion to the SIP non-residents
- Sale of shares if desired
- Potential capital gain: 0% in Paraguay if foreign source
- Repatriation of funds to Mercury or a Paraguayan account
The Ecosystem to Optimize Your Stock Options from Paraguay
- Paraguayan tax residency — foundation of the splitting strategy
- Equity compensation / international mobility tax specialist (essential — €5,000-€15,000 in fees saving you €50,000-€500,000)
- US LLC for your other income (consulting, freelance)
- Mercury Bank to receive sale proceeds
- Paraguayan bi-currency bank account
- US CPA if stock options from a US company (IRS implications)
- Corporate law attorney (verification of allocation plan, exercise conditions from abroad)
- Paraguayan accounting (€30/month)
Conclusion
Stock options, BSPCE, AGA/RSU, and BSA often represent the most significant financial gain in the career of an executive or founder. For a gain of €1-5 million, the difference between exercising in France (50-65% tax) and exercising from Paraguay with optimal splitting (25-35% effective overall tax, or even less if a long duration in PY) represents several hundred thousand euros.
Paraguay offers the optimal framework for this optimization: 0% territorial tax on the portion of the gain attributable to the Paraguayan period, no binding tax treaty with France (no unfavorable "tie-breaker"), formal and documented tax residency that legitimizes the splitting.
The golden rule: never exercise before leaving. Each month in Paraguay before exercise increases the 0% portion. For BSPCEs of a hypergrowth startup, this patience can be worth €100,000-€500,000 in savings.
The second rule: get advice from a specialist. International equity compensation taxation is one of the most technical subjects in tax law. An incorrect splitting calculation, premature exercise, or misunderstanding of the exit tax can cost hundreds of thousands of euros. Investing in a specialized tax advisor (€5,000-€15,000) is the best ROI for your tax life.
Do you hold stock options, BSPCE, AGA, or BSA and are you considering Paraguay? Contact our team for a personalized optimization plan: provisional calculation of the split, optimal departure timing, exit tax management, coordination with your employer, referral to an equity compensation tax advisor. Each month of anticipation can be worth tens of thousands of euros.