This guide will safely lead you through all the forms. It leaves no details out and explains what really matters for tax purposes. You will receive all the information you need for preparing your personal declaration in a concise and precise manner. Additionally, the book provides commentary with valuable background information and tips for tax savings. Contents: Step-by-step through the 2025 tax return. The most important information on all official forms. A quick overview of the key income tax and form changes compared to the previous year. Current tax-saving tips with examples and explanations. With thematic focuses arising from the Growth Opportunities Act and the changes in the Annual Tax Act: gas/heat price brake, company car taxation, pension taxation, photovoltaic systems, special depreciation on buildings, and childcare. Current in the new edition: increase of the basic tax allowance for 2025 to 12,096 euros. Increase of child benefit from 250 euros per month to 255 euros starting January 2025. Increase of the tax-free child allowance to 3,336 euros. The solidarity surcharge will only be levied if the income tax under the splitting method exceeds 39,900 euros (previously 36,260 euros), otherwise 19,950 euros (previously 18,130 euros). New wording of the tax exemption for small photovoltaic systems. Reintroduction of declining balance depreciation for movable assets of fixed assets acquired or produced after June 30, 2025, and before January 1, 2028. It is limited to three times the linear depreciation and a maximum of 30%. New declining balance depreciation for electric vehicles. Increase of the maximum acquisition cost for company car taxation of electric vehicles to 100,000 euros. Expansion of the obligation for electronic transmission of balance sheets as well as profit and loss statements.