The 2026 Czech Stock Option Tax Win Tech Expats Missed

What changed in January 2026

The Czech Income Tax Act was amended via the Companion Act to the Unified Monthly Employer Reporting law (Act No. 360/2025 Sb.). The amendment added a new Section 6a, which creates a separate tax treatment for what the law calls "qualified employee options." For employees and employers who meet the eligibility tests, income from exercising these options is now treated as "other income" (jiný příjem in Czech), which means it sits outside the social security and health insurance contribution base.

The political framing during the legislative process was "support for startups." That phrase is doing real work in the law itself. The favourable treatment is not available to every employer with a stock plan. The eligibility tests are narrow.

Who actually qualifies

Two sets of conditions must be met for the new treatment to apply.

Qualified employer

The employer must meet limits set out in Section 6a. The two main ones are an annual turnover not exceeding 2.5 billion CZK and total assets not exceeding 2 billion CZK. There are additional structural requirements about how the company is organised. The cap is set so that the regime is targeted at startups and small to medium employers, not at the Czech subsidiaries of multinational tech firms.

If you work at a Czech subsidiary of a US-headquartered tech company with global revenue well above 2.5 billion CZK, your employer almost certainly does not qualify for this regime, even if the local Czech entity is small. The thresholds are tested at the level of the issuing company, not the local payroll entity.

Qualified employee

The employee must meet several conditions, including:

• The aggregate of the employee's "qualified" holdings in the employer must not exceed 5 percent of the share capital.
• The employee's service with the employer must last at least 12 months between the option grant and the exercise.
• The employee's income must be at least 1.2 times the monthly minimum wage.

Under each of these tests, the average expat tech worker at a large multinational is unlikely to be a "qualified employee" simply because their employer is unlikely to be a "qualified employer." The regime is genuinely aimed at startup founders and early employees.

What the favourable treatment looks like in practice

If both sets of conditions are met, the treatment of qualifying option income changes in three ways:

1. The exercise income is "other income," not employment income. This means it is not subject to social security or health insurance contributions on either the employee or employer side.

2. The taxation is deferred. Tax is due when the share is sold, not at the moment of option exercise. If the employee continues to hold the share, the deferral can run for up to 15 years from the exercise date before tax becomes due.

3. There is a meaningful catch. Shares acquired through a qualified option do not benefit from the standard 3-year time test that normally exempts long-held investment securities from tax. When the share is eventually sold, the difference between the sale price and the market value at the time the option was exercised is taxable, regardless of how long the share has been held.

For a startup employee whose options were exercised at low strike values and where the share value later grew significantly, the third point can mean the eventual tax bill is larger than under the old rules. The savings on social and health contributions at exercise have to be weighed against the loss of the time test on the gain. Whether the regime is favourable in any specific case depends on the numbers.

Standard taxation of stock options outside the qualified regime

For employees of larger companies (the majority of expat tech workers in Prague), the relevant regime is still the "standard" taxation of equity compensation, not the new qualified regime. Under the standard rules in 2026:

• The fair market value of vested shares or exercised options is treated as employment income.
• Income tax applies at progressive rates: 15 percent up to roughly 1,762,812 CZK in 2026, 23 percent above.
• Employee social security and health insurance contributions apply (subject to caps).
• The 3-year time test still applies to the share itself: if the employee holds the acquired share for at least 3 years before selling, the gain on sale is exempt from income tax.

One option that has been available since 2025 is to defer the moment of taxation. The employer must notify the tax office that they are using deferral. When deferral applies, taxation is moved from the moment of vesting or exercise to a later moment, typically when the share is sold or when the employee's relationship with the employer ends. This option remains available in 2026 and is separate from the qualified options regime.

What this does not change

Other stock-related rules are unchanged in 2026:

• The 3-year time test on standard shares. Under the standard regime, if you hold acquired shares for at least 3 years before selling, the gain is tax-free.
• The 40 million CZK cumulative exemption cap. The cap was abolished as of 1 January 2026 for shares and other investment securities (it remains in place for crypto). This is a separate change but moves in the same direction: large gains on long-held shares are now fully exempt.
• Worldwide income reporting. If you are a Czech tax resident, you still report worldwide stock option income on your Czech return, regardless of which country the employer is based in.
• Non-resident statutory body members. The 15 percent withholding regime that previously applied to fees paid to non-resident members of statutory bodies has been abolished from 1 January 2026. Standard progressive rates now apply.

Three practical actions if you have equity compensation

1. Find out which regime applies to your plan. Most expat tech workers in Prague are on the standard regime, not the qualified options regime, because their employer is too large. If you work at a Czech startup or smaller employer, ask your finance or HR team in writing whether the company has set up the plan to qualify under Section 6a, and whether the conditions on your side are met. The answer determines which set of rules applies to you.

2. Make sure your tax filing matches your situation. If you receive RSU or stock option income from a foreign parent company, you may need to file a Czech personal tax return even if your local employer runs payroll for you. The deferral regime that has been available since 2025 also requires the employer to notify the tax office. If you are not sure whether deferral is being applied to your grants, ask in writing.

3. Plan around the time test on the share itself. Under the standard regime, the 3-year holding period after acquiring the share is what unlocks the tax-free capital gain on sale. Selling before 3 years means the gain is taxable income. For acquired shares from US or other foreign listings, this also interacts with currency conversion at the moment of sale. Time the sale around both the calendar year and the 3-year window if you can.

The 2026 changes do not turn equity compensation into an automatic windfall. The qualified regime is narrowly targeted, and even the broader change to the 40 million CZK cap matters mostly to those with very large gains. For most expats, the practical implication is simpler: the 3-year time test remains the single biggest tax planning tool around equity compensation in Czechia, and timing the sale matters more than the form the grant takes.

Frequently asked questions

About the author: Nicolas Griss is the co-founder of Profi Expats, a team of CNB-registered financial advisors helping expats in Czech Republic since 2017. He specializes in pension planning, investments, and mortgages for the international community in Prague.