The most urgent tax to deal with is typically the VAT, since you might have to register for VAT in the first year of operation and file a VAT return in after the first quarter. Depending on the income of the project, it might not be possible to retroactively register your company for VAT for a past calendar year, leading to non-recoverable VAT. The corporate income tax deadlines are much more generous since a company does not always have to file an income tax return in the first calendar year of operations. For example, an association incorporated in Zug in July 2022, will have to file its first tax return 2022/2023 by 31 March 2025 at the latest.Â