DBI stands for Definitive Taxed Income and is an exemption scheme for companies that investing in individual shares of other companies. Dividends and capital gains from these investments must, however, respect certain conditions in order to be exempt from (double) taxation.
The DBI exemption allows companies to exempt dividends from their subsidiaries from corporate tax, provided that three cumulative conditions are met:

A DBI cavek is an investment fund with a tax-favourable regime for your company. By investing as a company in a DBI cavek, you can benefit from the DBI deduction on both dividends and capital gains when selling the SICAV, without the above conditions.
In doing so, the company is entitled to the DBI deduction of a maximum of 100%, insofar as it comes from companies subject to corporate tax or similar foreign tax. A 100% exemption is therefore not always guaranteed but is often approached in practice.
Small companies are companies with legal personality that, at the balance sheet date of the last financial year closed, do not exceed more than one of the following criteria:

The tax part of the draft Programme Act has now been adopted by the federal government. The new rule applies from tax year 2026 (for financial years starting on or after 1 January 2025).
Purpose of DBI: avoid double taxation on share dividends (DBI = “permanently taxed income”).