Hi there,
Stock, bonds and other securities (including cryptocurrencies and blockchain tokens), precious metals, and other assets must be included in your wealth tax return.
The Swiss Federal Tax Administration publishes the official year end prices of major exchange-traded securities. It also publishes official year-end prices of major cryptocurrencies. These can be found online or can be requested from the tax office. If you use your cantons tax software, the official year-end prices are typically filled in automatically when you enter the title of the security.
If you hold many different types of securities, it may be helpful to obtain an account statement from your broker. Some brokers make these available for download on their online trading platforms. Some brokers charge fees for these statements, or charge for printed statements sent by post. Brokers may provide detailed account statements for tax purposes, but the fees charged for these can be quite high. You can find statement fees listed on the info pages corresponding to brokers in the online trading comparison.
Best regards from Moneyguru