The German Trade Union Confederation’s (DGB) tried-and-true guide explains the most important changes in tax law.
Deadlines for Filing the 2025 Tax Return
If a tax return is required, the 2025 income tax return must be received by the tax office no later than July 31, 2026. Those who have their income tax return prepared by an income tax assistance association or a tax advisor have untilFebruary 28, 2027, to file their 2025 tax return.
The DGB’s “Basic Concepts of Income Tax 2026” is not only an easy-to-understand reference guide for learning about the numerous terms in income tax law. Thanks to clear examples, it also offers practical assistance in filling out your own tax return. Finally, the guide is highly useful due to a series of clear tabular presentations.
The brochure is available for download as a PDF. Using it as a digital reference guide is simple: You can jump directly to the term you’re looking for on the corresponding page from either the table of contents or the index, saving you the trouble of scrolling through the document.
