In Germany, we currently withhold only 25% capital gains tax. We do not withhold church tax or solidarity surcharge on realized gains, but may claim church tax separately from you.
We are required by law to withhold applicable taxes. Please note that you are responsible for paying taxes according to local laws. If you are located in another country where we provide our services, you are solely responsible for paying the taxes.
The best way to get detailed information is to contact a tax advisor.