Stock Options and RSUs

Key Takeaways

• Stock options are taxed in Box 1 (as employment income) at the moment of exercise — not when granted or when they vest.
• RSUs are taxed in Box 1 at the moment of vesting — when the restrictions lapse and you receive the shares.
• The taxable amount is treated as salary, subject to payroll tax (loonheffing) at your marginal rate.
• After exercise/vesting, the shares move to Box 3 (taxed as wealth) — unless you hold 5%+ of the company (Box 2).
• Cross-border situations (options granted abroad, exercised in NL, or vice versa) require careful allocation between countries.

Types of Equity Compensation

Before diving into taxation, let's clarify the common types:

Each is taxed differently. This article covers the most common: stock options, RSUs, and ESPPs.

Stock Options: Taxation at Exercise

The Timeline

The Taxable Amount

At exercise, the taxable amount is:

Market value on exercise date − Strike price = Taxable employment income

Example — Stock option grant:

• Grant: 1,000 options with a strike price of €20
• Exercise: When the market price is €55
• Taxable amount: (€55 − €20) × 1,000 = €35,000
• This €35,000 is added to your Box 1 income and taxed at your marginal rate

How Tax Is Collected

Your employer is responsible for withholding payroll tax on the exercise benefit. In practice:

• Cashless exercise (sell-to-cover): The broker sells enough shares to cover the tax. You receive the remaining shares or cash. Most common approach.
• Cash exercise: You pay the strike price in cash. Your employer withholds tax from your regular salary or from the share proceeds.
• Net share settlement: The employer withholds shares equivalent to the tax amount. You receive fewer shares but pay no cash.

The exercise benefit appears on your payslip as a one-off taxable amount, with loonheffing applied at the bijzonder tarief (special rate).

When NOT to Exercise

Stock options create a strategic decision: when to exercise. Tax considerations include:

• Exercise in a low-income year: If you take unpaid leave, are between jobs, or have reduced income, your marginal rate may be lower
• Exercise incrementally: Instead of exercising all options at once, spread exercises across years to manage bracket creep
• Time the exercise around the 30% ruling: If your ruling is expiring, exercise before expiration to benefit from the lower effective rate

RSUs: Taxation at Vesting

The Key Difference From Options

With RSUs, there is no strike price. You receive shares for free (or at no cost) when they vest. The entire market value at vesting is taxable.

The Taxable Amount

Market value on vesting date × Number of shares = Taxable employment income

Example — RSU grant:

• Grant: 500 RSUs, vesting over 4 years (125 per year)
• Year 1 vesting: 125 shares × €80 market value = €10,000 taxable income
• Year 2 vesting: 125 shares × €95 market value = €11,875 taxable income
• And so on...

Each vesting event is a separate tax event. The taxable amount depends on the market value at the time of each vest.

RSU Withholding

Your employer typically handles RSU tax through one of these methods:

Most large tech companies and multinationals use sell-to-cover as the default. Your payslip will show the vesting income and the tax withholding.

After Exercise/Vesting: Box 3

Once you hold the shares (after exercising options or after RSUs vest), the shares become a regular Box 3 asset. This means:

• The value of your shares on January 1st is included in your Box 3 wealth
• A deemed return is applied (6.33% for investments in 2026)
• The deemed return is taxed at 36%
• Any actual capital gains when you later sell the shares are not separately taxed (they are captured in the Box 3 deemed return system)

Exception: If you hold 5% or more of the company, the shares are in Box 2 instead of Box 3, with different rules.

ESPP (Employee Stock Purchase Plan)

Many international employers offer ESPPs, which allow employees to buy company stock at a discount (typically 15%).

How ESPPs Are Taxed in the Netherlands

The discount is taxable employment income at the moment of purchase:

Example:

• Market price on purchase date: €100
• Your purchase price (15% discount): €85
• Taxable benefit: €100 − €85 = €15 per share

This €15 per share is added to your Box 1 income. After purchase, the shares go into Box 3 at their full market value.

Cross-Border Situations

Equity compensation frequently creates cross-border tax issues because the grant, vesting, and exercise often span multiple countries.

The Allocation Principle

When you worked in multiple countries during the vesting or earning period of your equity compensation, the taxable benefit is allocated between countries based on where you worked:

Example — RSUs vesting after 4 years, you worked in Germany for 2 years then the Netherlands for 2 years:

• 500 RSUs vest, market value €80 each = €40,000 total
• Netherlands allocation: 2/4 years = 50%
• Dutch taxable amount: €40,000 × 50% = €20,000
• Germany taxes the other €20,000

Common Scenarios

The 30% Ruling and Equity

If you have the 30% ruling, the employment income portion (exercise/vesting benefit) is eligible for the 30% exemption. This can significantly reduce the tax on equity compensation:

Example — €50,000 RSU vesting with 30% ruling:

• Exempt portion: €50,000 × 30% = €15,000
• Taxable: €35,000
• Tax saving: approximately €7,400 (at 49.50%)

After vesting, if you elect partial non-resident status, foreign shares in Box 3 may also be exempt from wealth tax.

Reporting and Administration

What Appears on Your Payslip

What to Report on Your Tax Return

• The income from exercise/vesting is already included in your jaaropgaaf (annual wage statement)
• The shares you hold after exercise/vesting must be reported in Box 3 (value on January 1st)
• If you sold shares during the year, the proceeds are not separately reported (Box 3 uses the January 1st snapshot)
• Dividends received on shares are also part of the Box 3 deemed return system (not separately taxed)

What to Keep

Maintain records of:

• Original grant agreements (showing grant date, number of shares/options, strike price, vesting schedule)
• Exercise confirmations (showing exercise date, number exercised, market price)
• Vesting statements (showing vesting date, number of shares, market value)
• Tax withholding confirmations
• Your employment history across countries (for cross-border allocation)

Common Mistakes

1. Thinking options are taxed at grant or vesting — Options are taxed only at exercise. Vesting merely gives you the right to exercise; it does not trigger tax (for options — RSUs are different).
2. Not planning for the tax bill — A large option exercise or RSU vesting can create a tax bill of tens of thousands of euros. Ensure you have liquidity to cover it, or use sell-to-cover.
3. Forgetting to include shares in Box 3 — After exercise/vesting, your shares are Box 3 assets. They must be declared at their January 1st value each year.
4. Ignoring cross-border allocation — If you worked in multiple countries during the vesting period, each country may claim a portion. Failing to allocate correctly can result in double taxation without relief.
5. Not using the 30% ruling on equity income — The 30% exemption applies to the exercise/vesting benefit. If your employer does not apply it automatically (some payroll systems miss this), raise it with HR.
6. Exercising all options in one year — This can push a massive amount into the 49.50% bracket. Spreading exercises across multiple years can save thousands in tax.
7. Confusing US and Dutch tax treatment — US tax rules for ISOs, NQSOs, and ESPPs differ significantly from Dutch rules. Do not assume the treatment is the same.

What to Read Next

• Understanding Your Payslip — See where equity income appears on your loonstrook
• Payroll Tax (Loonbelasting) — How the special rate applies to one-off income
• Box 3: Savings and Investments — How your shares are taxed after exercise/vesting
• Box 1: Income from Work — The full picture of employment income taxation