International Employees & Equity: Tax Traps, Residency, and Mobility Planning

Equity compensation can be one of the most valuable parts of a tech professional’s compensation package. It can also become one of the most complicated when an employee works across borders.

For an employee who moves from the U.S. to another country, joins a company while living abroad, or works remotely from multiple jurisdictions, the tax treatment of stock options, RSUs, ESPPs, and restricted stock may not be as straightforward as it appears. Where you live matters, but so does where you physically performed the work that earned the compensation.

That creates an important planning question: What happens to your equity compensation when your work location changes?

The answer depends on several factors, including your tax residency, the type of equity you received, when the equity was earned or vested, and the tax rules of each country involved.

This guide covers the major equity compensation international tax issues employees and employers should understand before an international move or remote hire.

Why International Equity Compensation Gets Complicated

Equity compensation already requires careful tax planning. Adding another country to the equation can introduce an entirely new layer of complexity.

A U.S.-based employee might receive RSUs while working in California, move to the United Kingdom before some of those shares vest, and eventually sell the shares after becoming a U.K. tax resident. There may be tax considerations in both countries, and the answer may depend on how the compensation is allocated between the periods and locations in which the employee performed services.

The same issue can arise when a company hires an employee who lives outside the United States. The fact that the employer is a U.S. company does not automatically mean the employee’s compensation is entirely U.S. source income.

For U.S. tax purposes, compensation for personal services is generally sourced based on where the services are performed. When services are performed partly in the United States and partly abroad, compensation may need to be allocated between the jurisdictions.

That means keeping track of where you actually worked can be just as important as keeping track of when your equity vested.

Tax Residency Is Only Part of the Equation

One of the most common mistakes international employees make is assuming that tax residency alone determines how their equity will be taxed.

It doesn't.

Your tax residency can determine which country has broad taxing rights over your income, but the source of compensation can also depend on where you performed the underlying services.

Consider an employee who receives a four-year RSU grant while working in the United States. Two years later, that employee relocated to Canada and continues working for the same U.S. technology company.

The employee's employer has not changed. The equity agreement has not changed. But the employee's tax circumstances have.

Depending on the applicable rules, the compensation associated with the equity may need to be analyzed based on the employee's work locations during the relevant period. The IRS specifically notes that compensation for services performed in multiple countries is generally allocated based on the time spent performing those services.

This is why an international move should trigger a review of outstanding equity grants, not just a review of salary and benefits.

RSUs and International Moves

RSUs are particularly important because they generally become taxable as compensation when the shares vest.

The IRS explains that RSUs generally are not treated as transferred property at grant and therefore do not qualify for an 83(b) election. Typically, the value of the shares is included in income when the RSUs vest.

For an international employee, however, the more difficult question may be which country gets to tax that income.

Suppose you received an RSU grant while working in the United States, then moved abroad before the shares vested. The vesting date does not necessarily tell the entire story.

You may need to determine:

• Where you performed services during the relevant vesting period

• When you became a tax resident of the new country

• Whether both countries consider some portion of the compensation taxable

• Whether a tax treaty affects the result

• Whether foreign tax credits or other relief may be available

• What withholding and reporting obligations apply

The details vary significantly by country, which is why international equity planning should be handled before the move rather than after the first tax return is due.

For additional background on how different forms of equity are taxed, see our guide to The Tax Implications of Different Types of Equity Compensation.

Stock Options Create Another Layer of Planning

Stock options introduce additional timing decisions because there can be separate events for the grant, vesting, exercise, and eventual sale.

For example, an employee might receive ISOs or NSOs while working in the United States, relocate internationally, and then exercise the options after the move.

That creates several questions:

1. Where was the employee working when the options were earned?

2. Where is the employee a tax resident when the options are exercised?

3. Does the foreign country recognize the U.S. tax treatment?

4. Could the exercise create taxable income in both jurisdictions?

5. Are there foreign reporting or withholding requirements?

6. Could the move affect the employee's ability to receive favorable U.S. tax treatment?

These questions become particularly important with ISOs because the U.S. tax benefits associated with incentive stock options depend on meeting specific requirements.

A cross-border move can also complicate the analysis of AMT, exercise timing, and the eventual sale of the shares.

If stock options are part of your compensation, it is worth reviewing our guide on How to Manage Stock Options: ISOs vs. NSOs, Timing, Costs, and Tax Implications.

What About an 83(b) Election?

The 83(b) election is another area where international employees need to slow down and get advice.

An 83(b) election generally allows an employee who receives substantially nonvested property to elect to include the property's value in taxable income at the time of transfer rather than waiting until the property becomes substantially vested. The IRS currently provides Form 15620 for making the election.

The deadline is critical: an 83(b) election generally must be filed no later than 30 days after the property is transferred.

This can be particularly important for startup employees receiving restricted stock early in a company's life, when the value of the shares may be relatively low.

But international employees should not assume that an 83(b) election produces the same result everywhere.

A U.S. election does not automatically determine how another country will characterize or tax the same equity. The employee may need to consider the tax rules of both jurisdictions, including whether the foreign country recognizes the election or uses a different approach to taxing restricted stock.

One important distinction: RSUs generally cannot be subject to an 83(b) election at grant because no actual property is transferred at that time.

If you're evaluating an 83(b) election, our guide to The 83(b) Election Explained provides additional background.

Remote Work Can Create Tax Issues for Employers, Too

International equity planning isn't just an employee issue.

A company hiring remote employees internationally needs to consider whether employing someone in another country creates additional payroll, tax, employment, or reporting obligations.

The employee's physical work location can matter even when:

• The employer is incorporated in the United States

• The employee is paid through a U.S. payroll system

• The equity plan is administered in the United States

• The employee is paid into a U.S. bank account

For U.S. tax purposes, compensation for services performed outside the United States by a nonresident alien is generally foreign-source income and is not subject to U.S. federal income tax withholding.

But that does not mean the arrangement is automatically tax-free. The employee's country of residence may impose its own income taxes, payroll requirements, equity compensation rules, and reporting obligations.

Companies should therefore involve tax and legal professionals before implementing international remote-work arrangements, particularly when equity compensation is part of the employee's package.

Best Practices Before Moving or Hiring Internationally

Whether you're an employee relocating abroad or a company hiring internationally, a few planning steps can reduce surprises.

1. Review your equity agreement

Identify every outstanding grant and document:

• Type of equity

• Grant date

• Vesting schedule

• Exercise price

• Vesting dates

• Expiration dates

• Settlement provisions

• Any applicable withholding requirements

2. Document your work locations

Keep accurate records of where you physically performed services, particularly if you worked in multiple countries during an equity vesting or compensation period.

This documentation may become important when determining how compensation should be allocated.

3. Model the tax impact before relocating

Don't wait until tax season.

Before moving, estimate the potential tax consequences of upcoming vesting events, option exercises, and planned stock sales under both the current and prospective tax regimes.

4. Understand the interaction between countries

International tax planning requires looking at both sides of the transaction.

Ask whether the countries involved have a tax treaty, foreign tax credit mechanism, or other rules designed to prevent double taxation. Do not assume that the existence of a treaty means every equity transaction will receive favorable treatment.

5. Coordinate with your employer

Your company's payroll, equity administration, and tax teams need accurate information about your work location and residency status.

A move that isn't properly communicated can create withholding or reporting problems later.

A Closing Thought

Equity compensation is already a significant part of many technology professionals' financial lives. When international mobility enters the picture, the stakes can become even higher.

The biggest mistake is treating an international move as simply a change of address.

Before moving countries, accepting an international remote role, exercising stock options, or receiving restricted stock, take time to understand how the change could affect your equity, taxes, and overall financial plan. The right strategy depends on the specific equity involved, where you work, where you are a tax resident, and the rules of every jurisdiction that may have a claim on your income.

At Silicon Beach Financial, we help entrepreneurs and technology professionals coordinate financial planning, investment management, and tax planning around complex equity compensation. As a fee-only, fiduciary financial planning firm, our goal is to help you understand your options and make decisions that align with your broader financial goals.

Schedule a Discovery Call to start a conversation about your equity compensation and financial plan.