Remuneration increasingly "in shares"... but rarely optimized
In American companies (and increasingly in international groups), a significant part of compensation is no longer based solely on salary.
It is now based on equity netting instruments :
- RSUs (Restricted Stock Units)
- Stock-options (options sur actions)
- Stock grants (free or conditional share allocations)
These mechanisms can represent a significant part of total compensation, especially in tech, finance or scale-ups.
But when you move from an American to a Franco-American framework, their tax and patrimonial treatment becomes much more complex.
Three tools, three different logics
1. RSUs (Restricted Stock Units)
RSUs are promised actions that actually become vested according to a defined schedule.
👉 In practice:
- you receive shares in the future;
- they are imposed at the time of vesting;
- a portion can be automatically sold to cover taxes.
2. Stock-options
Stock options give the right to buy shares at a predetermined price (strike price).
👉 In practice:
- you decide when to practice;
- taxation depends on the type of option (NSO vs ISO);
- The timing of the exercise is strategic.
Stock options are particularly sensitive to timing and tax residency choices.
3. Stock grants
Stock grants are share allocations, sometimes conditional.
👉 In practice:
- gradual or immediate acquisition;
- taxation according to the date of acquisition;
- sometimes combined with sales restrictions.
The real topic: taxation depends on your location
In a purely American context, the rules are already complex.
But in a Franco-American context, one element changes everything:
👉 tax residence at the time of vesting or exercise.
The U.S. typically taxes the global compensation of U.S. taxpayers.
France, for its part, can tax certain income related to an activity carried out on its territory.
As a result, the same share allocation can be treated differently depending on the time and place.
The major pitfall: the poor timing of departure or expatriation
One of the most common cases of poor optimization concerns international transitions.
Typical examples:
- departure from France to the United States during a vesting plan;
- return to France with RSUs in progress;
- change of tax residence during a period of exercise of stock options.
In these situations, a portion of the gain can be attributed to each country, depending on the period of acquisition or work.
This can create:
- partial double taxation;
- multiple reporting obligations;
- complex proration calculations.
RSUs : le piège du “tax at vesting”
In the United States, RSUs are usually taxed at the time of vesting.
This means:
- immediate taxation;
- even if you don't sell the shares;
- often with automatic withholding tax.
A common
👉 consequence is a lack of liquidity if the automatic sale does not cover the entire tax.
Stock options: the risk of bad exercise
Stock options are often the most sensitive instrument.
The main risks:
1. Poor exercise timing
Exercising too early or too late can significantly change the tax base.
2. Change of tax residence
A change of country can turn an unrealized gain into taxable income in two jurisdictions.
3. Complexity of ISO vs NSO
Incentive Stock Options (ISOs) receive favorable treatment in the United States, but this treatment may not be recognized in the same way internationally.
Source IRS : https://www.irs.gov/taxtopics/tc427
Stock grants: a seemingly simple tool, but not always neutral
Stock grants seem simpler, but:
- their valuation at the time of acquisition is taxable;
- their treatment depends on the type of plan;
- Their taxation can vary depending on the tax residence.
The special case of Franco-American employees
For expatriates or tax dual residents, there are several additional complexities:
- coordination between French and American taxation;
- treatment of income from international activity;
- multiple reporting obligations;
- lack of perfect equivalence between tax regimes.
In some cases, the same actions can generate:
- U.S. taxable income;
- additional taxation in France with partial tax credit.
Reporting obligations not to be neglected
Even when taxation is under control, reporting obligations remain important:
- Foreign Brokerage Account (FBAR) Reporting;
- Financial Assets Declaration (Form 8938 FATCA);
- Reporting of Equity Compensation's revenues.
Sources:
- https://www.fincen.gov/report-foreign-bank-and-financial-accounts
- https://www.irs.gov/businesses/corporations/summary-of-fatca-reporting-for-us-taxpayers
Some of the most common mistakes
- Ignoring taxation at the time of vesting
- This is often where the actual taxation is triggered.
- Thinking that taxation is the same between countries
- The French and American regimes are structurally different.
- Don't anticipate a change of country
- International mobility without planning can create unexpected tax effects.
- Neglecting liquidity
- RSUs and options can generate tax without immediate cash available.
How can you really optimise your equity compensation?
An effective strategy is generally based on:
1. Analysis of the vesting calendar
Identify critical periods in case of mobility.
2. International Tax Coordination
France and the United States must be treated together, not separately.
3. Exercise Planning
Especially for stock options.
4. Liquidity Management
Anticipate sales to cover taxes.
5. Mobility scenarios
Departure, return, partial expatriation.
In conclusion
RSUs, stock options and stock grants have become central elements of modern compensation.
But in a Franco-American context, their optimization requires a much more detailed reading than in a domestic context.
Between deferred taxation, vesting rules, reporting obligations and international mobility, the real value of these instruments depends largely on the way in which they are anticipated.
A good strategy is not only to understand the actions received, but to structure their processing in time and space.
Official sources used
- IRS – Tax Treatment of Stock-Based Compensation : https://www.irs.gov/government-entities/federal-state-local-governments/public-employers/tax-treatment-of-stock-based-compensation
- IRS – Incentive Stock Options (Topic 427) : https://www.irs.gov/taxtopics/tc427
- FinCEN – FBAR Reporting : https://www.fincen.gov/report-foreign-bank-and-financial-accounts
- IRS – FATCA Reporting Summary : https://www.irs.gov/businesses/corporations/summary-of-fatca-reporting-for-us-taxpayers
This material is provided for educational purposes only and should not be viewed as a recommendation or as investment, tax, or legal advice. All investments contain risk and may lose value. Guardian and its subsidiaries do not provide tax or legal advice. Individuals should seek advice from their own qualified tax and legal professionals regarding their specific situation and any strategies discussed. 8967228.1 Exp 6/28