Author: Stefan Strassl

Tax deadlines are binding for businesses. If they are missed, this can result in late payment penalties, late filing penalties or even the tax office making an assessment. Those who are aware of the legal consequences are better able to assess financial risks and address organisational weaknesses at an early stage.

Tax deadlines in 2026 affect almost every company – from tax returns and annual financial statements to ongoing sales and payroll reports. Those who miss deadlines risk surcharges, estimates and liability issues. A structured overview is therefore essential to avoid financial and legal risks.

The new year brings numerous tax changes once again. In 2026, more than ever, those who plan ahead will benefit – and those who wait will pay the price. Our experts summarise the most important changes for entrepreneurs, freelancers and private individuals – in a compact, understandable format with clear tips on how you should act now.