Your income from the crowdinvestment is classified as investment income and is therefore subject to tax. The tax rate is 25% of the income. If the total of all your income from capital gains remains below €1000 per year, you do not have to pay any taxes on it (Sparer-Pauschbetrag).
In order to benefit from this exemption, it is important that you issue all banks from which you expect investment income with a Freistellungsauftrag in the amount of the expected income. At WIWIN, Freistellungsaufträge or Nichtveranlagungsbescheinigungen can be filed directly online as part of your investment. In the future, all investment income will be paid out net, i.e. with the withholding of capital gains tax, solidarity surcharge and, if applicable, church tax.