Standard work among tax guides: The new KONZ 2023 offers 1,000 legal tax tricks. With more than 860 pages, it is more of a workbook that is aimed at anyone who wants to get an extra euro or two out of their tax return.

“Konz”, which was founded by the non-fiction author Franz Konz in 1985 and has been updated annually since then. The book can be colloquially referred to as the “Swiss Army Knife” of tax literature.