Crypto & Stocks on Your 2026 Swiss Tax Return: What to Declare

Investing has become much more accessible in recent years. Many people living in Switzerland now hold a mix of traditional stocks, ETFs, foreign securities, Bitcoin, Ethereum, and other digital assets.

But as investment portfolios become more diverse, tax reporting can become more complicated.

When completing your tax return Switzerland, simply reporting your salary is not enough. Depending on what you own and how you invest, you may also need to declare your stocks, cryptocurrency holdings, dividends, staking rewards, foreign investment accounts, and other income generated from your portfolio.

Swiss tax rules can be particularly important because investment assets may affect both income tax and cantonal wealth tax. Cryptocurrency is also treated as an asset for Swiss tax purposes and generally needs to be declared even if you have not sold it.

Here is what investors should understand when preparing their 2026 Swiss tax return.

1. Understanding Swiss Tax Treatment of Stocks

Stocks and other securities generally need to be included in the securities section of your Swiss tax return.

You should normally provide information such as:

• The name of the security

• Number of shares owned

• Tax value of the holding

• Dividend or investment income received

• Relevant withholding taxes

Switzerland's Federal Tax Administration provides valuation information for many securities through its ICTax system.

One important feature of the Swiss system is the distinction between investment income and capital gains.

Dividends are generally taxable income. However, capital gains from the sale of movable private assets, including securities, are generally tax-free for individuals when the investments form part of their private wealth.

That distinction becomes especially important for active investors because someone classified as carrying on professional securities trading may face different tax treatment.

2. How Crypto Is Declared in Switzerland

Cryptocurrency should not be overlooked just because it is held in a private wallet rather than a traditional bank account.

The Swiss Federal Tax Administration treats payment tokens such as cryptocurrencies as movable intangible assets for wealth-tax purposes. They are generally declared at their market value at the end of the relevant tax period.

For commonly traded cryptocurrencies, the Federal Tax Administration publishes tax values. Where an official value is unavailable, another supportable market value may need to be used.

Therefore, if you hold Bitcoin, Ethereum, or another cryptocurrency on December 31, it may still need to appear on your tax return even if you never sold the investment during the year.

Simply holding cryptocurrency normally does not generate taxable income by itself.

However, receiving cryptocurrency through activities such as employment, mining, staking, or business activities can create tax consequences depending on the circumstances.

3. What Investment Documents You Need

Good tax reporting starts with good records.

Before beginning your return, collect the documentation relating to your investments for the entire year.

Useful records can include:

Brokerage statements: Your annual broker statement may show securities held, purchases, disposals, dividends, and portfolio value.

Crypto exchange records: Download annual statements from exchanges you used during the year.

Dividend statements: Keep evidence of both Swiss and foreign dividends.

Transaction histories: Crypto investors in particular should retain detailed records showing purchases, sales, swaps, transfers, staking rewards, and other transactions.

Do not rely only on your current account balance.

If you moved cryptocurrencies between wallets or transferred securities between brokers, keeping transaction histories can help demonstrate that the movement was a transfer rather than a disposal or new source of income.

4. Declaring Foreign Stocks & Crypto Accounts

Foreign investments do not automatically disappear from Swiss tax reporting simply because the broker or exchange is located overseas.

If you are subject to Swiss taxation, foreign stocks and other investment assets may need to be included alongside Swiss holdings.

For example, someone may have:

• U.S. shares through an American brokerage platform

• European ETFs through a foreign broker

• Cryptocurrency held on an overseas exchange

• Foreign investment accounts

• Digital assets in private wallets

These holdings should be reviewed when preparing the return.

Amounts denominated in foreign currencies also have to be converted into Swiss francs for tax purposes. The Federal Tax Administration publishes exchange-rate information used for tax-relevant income and assets.

Investors with accounts in several countries should therefore avoid simply copying foreign-currency figures directly into their Swiss return without considering the appropriate conversion.

5. Capital Gains: What Investors Should Know

One of the most attractive aspects of the Swiss investment tax system is that private capital gains on movable private assets are generally tax-free.

For example, suppose you bought shares as a long-term personal investment and later sold them for a profit.

If you are considered a private investor, the gain is generally not subject to income tax.

Similar principles may apply to gains from certain cryptocurrency transactions held as private assets. The FTA states that gains and losses resulting from buying and selling payment tokens by individuals as part of private wealth are generally treated as tax-free private capital gains and non-deductible private capital losses.

However, the position can change if your investment activity is considered professional trading or self-employment.

Factors considered when distinguishing private asset management from professional activity can include the nature and scale of trading, financing arrangements, trading frequency and other circumstances.

There is no single factor that automatically determines the result.

Frequent traders, investors using significant leverage, or those carrying out investment activity in a highly systematic or commercial manner should therefore consider professional advice.

6. Reporting Dividends & Investment Income

Capital gains and investment income should not be confused.

Even when the sale of shares produces a tax-free private capital gain, dividends received from those shares generally represent taxable investment income.

Your return may therefore need to include:

• Swiss dividends

• Foreign dividends

• Interest

• Fund distributions

• Certain cryptocurrency-related income

Swiss investment income may also be subject to Swiss anticipatory tax, commonly called withholding tax.

The standard Swiss withholding-tax rate on relevant investment income such as certain interest and dividends is 35%. For Swiss residents who correctly declare the relevant investment income and assets, the tax may generally be refunded or credited subject to the applicable conditions.

Foreign dividends may have foreign withholding taxes applied as well. The available relief will depend on the country, applicable tax treaty, and individual circumstances.

7. Swiss Wealth Tax & Investment Assets

Another important distinction between Switzerland and many other tax systems is wealth tax.

Switzerland does not impose a federal wealth tax on individuals, but cantons and municipalities impose wealth taxes under cantonal rules.

Stocks, investment funds, cryptocurrencies and many other financial assets can therefore affect your taxable wealth.

Generally, your taxable assets are considered together with allowable debts and deductions when calculating your taxable net wealth.

Because cantons and municipalities set their own tax rates and rules, the final wealth-tax burden can differ depending on where you live.

For cryptocurrencies, the FTA's published tax value should generally be checked where available. Other cryptocurrencies may require an appropriate market valuation.

This is why accurate year-end records are particularly important.

8. Tax Treatment of Staking, Mining & Other Crypto Income

Cryptocurrency taxation becomes more complicated once you move beyond simply buying and holding coins.

Activities that may require additional analysis include:

Staking rewards: Rewards received for participating in blockchain validation may constitute taxable income depending on the structure and circumstances.

Mining income: Crypto received through mining may be treated differently from gains arising simply from the appreciation of privately held cryptocurrency.

Airdrops: The tax treatment of tokens received without a conventional purchase can depend on why and how they were received.

Crypto-related employment: Cryptocurrency received as salary or employment benefits can constitute taxable employment income. The FTA states that where employees are paid in payment tokens, the value at the time of receipt is generally relevant for income-tax purposes.

People running crypto-related businesses, validator activities or substantial trading operations may also have additional accounting and tax obligations.

9. Common Crypto & Stock Tax Mistakes

Investment reporting problems are often caused by missing information rather than deliberate mistakes.

Common errors include:

Not declaring cryptocurrency holdings

Some investors assume crypto only matters when sold. However, cryptocurrency may still need to be included for wealth-tax purposes.

Using incorrect year-end values

Using today's crypto price instead of the appropriate tax-period valuation can lead to inaccurate reporting.

Forgetting foreign investment accounts

Assets held through overseas brokers and exchanges should still be reviewed for Swiss reporting purposes.

Ignoring investment income

Dividends, staking rewards and other income should not automatically be treated the same way as capital gains.

Misclassifying trading activity

An investor who trades extensively may need to consider whether the activity could be viewed as professional securities trading.

Poor transaction records

This is particularly common with crypto investors using several exchanges and wallets.

Keeping complete records throughout the year makes tax preparation considerably easier.

10. When to Consult a Swiss Tax Advisor

A straightforward portfolio containing a few stocks and ETFs may be relatively simple to report.

However, professional tax assistance can become valuable when your investments involve:

• Several brokerage accounts

• Multiple cryptocurrency exchanges

• DeFi transactions

• Frequent crypto trading

• Mining or staking

• Significant foreign assets

• Cross-border investments

• Professional securities trading concerns

• Complex foreign dividend withholding taxes

Tax advice may be particularly important for Americans living in Switzerland.

U.S. citizens and certain U.S. residents abroad generally remain subject to U.S. tax filing rules on worldwide income. Depending on the assets involved, additional foreign financial account or asset reporting may also apply.

As a result, someone completing both a Swiss return and US tax return preparation should consider the interaction between the two systems rather than treating them as entirely separate exercises.

The same investment may be reported differently or produce different tax consequences under Swiss and U.S. rules.

Conclusion

Stocks and cryptocurrency are becoming normal parts of personal investment portfolios, but they can add several layers to a tax return in Switzerland.

Stocks and crypto holdings may influence your taxable wealth, while dividends, staking rewards, mining income and other investment income can create income-tax obligations.

At the same time, private capital gains on movable assets are generally tax-free in Switzerland, provided your activity remains private asset management rather than professional trading.

The best way to make tax season easier is to maintain complete records throughout the year. Keep brokerage statements, crypto exchange reports, wallet transaction histories, dividend statements and year-end asset values together instead of trying to reconstruct everything when your return is due.

You should also check the valuation methods and requirements applicable in your canton, particularly for less common cryptocurrencies and complex investments.

If your portfolio includes frequent trading, foreign brokers, substantial cryptocurrency activity or cross-border tax obligations, consulting a Swiss tax advisor can help you determine the correct treatment and avoid incorrectly reporting your assets or investment income.

For U.S. taxpayers living in Switzerland, coordinated Swiss and US tax return preparation can be especially important because both jurisdictions may require information about the same investments under different tax rules.