21.04.2026

Starting a Business: Tax Aspects for Entrepreneurs

The desire for independence, a viable business idea, or the prospect of a higher income – the motives for starting a business are diverse. Success, however, largely depends on careful preparation: professional expertise, business management understanding, and solid knowledge of tax law are crucial.

Important Preliminary Question: Planning and Taxes

Before entrepreneurs begin calculations, a detailed planning calculation should be conducted. This should consider not only operational fixed costs but also the taxes on profits. Careful planning helps to avoid unpleasant surprises regarding net income.

First Contact with the Tax Office

When registering a business, entrepreneurs automatically receive a "Questionnaire for Tax Registration" from the tax office. Freelancers, on the other hand, must initiate this contact themselves. Entrepreneurs provide information about their expected revenues and profits. Since November 2024, an Economic Identification Number is automatically assigned, so a separate application is no longer necessary.

Trader or Freelancer?

A crucial decision concerns the distinction between traders and freelancers. The choice has far-reaching tax implications regarding income tax, trade tax, accounting obligations, and bookkeeping requirements. It is important to understand the differences and impacts on the tax burden to choose the appropriate business form.

Overview of the Most Important Business Forms

Various legal forms are available for starting a business, such as sole proprietorships, partnerships (GbR, OHG, KG), and corporations (GmbH/UG). Each legal form has its advantages and disadvantages regarding liability, bookkeeping obligations, and tax burden. It is advisable to consider individual requirements and goals to select the appropriate business structure.

Direct Comparison of Tax Burden

A comprehensive overview of trade tax, income tax, and corporate tax for different business forms allows entrepreneurs to calculate the tax burden in advance and understand the impact on the business. A direct comparison helps to recognize the advantages and disadvantages of individual tax regulations and make the right decision.

The 6 Most Common Tax Mistakes When Starting a Business

By avoiding common tax mistakes such as choosing the wrong legal form, making too low advance payments, or having deficiencies in bookkeeping, entrepreneurs can reduce financial risks and optimize their tax situation. Professional tax advice can help avoid mistakes and establish a solid tax foundation for the business.

Sale of Company Shares

Entrepreneurs should also keep an eye on the tax aspects when selling company shares, as this can affect individual tax burdens. The various tax regulations for GmbH shares and partnership shares should be thoroughly examined to act in a tax-optimized manner.

Conclusion and Recommendation

For entrepreneurs, careful preparation, well-founded tax knowledge, and an appropriate business form are crucial for a successful start in self-employment. Choosing the right legal form and thoughtful tax planning can significantly influence the financial stability and success of the business. Before starting a business, it is advisable to seek tax advice to minimize tax risks and set the course for successful self-employment.

Eike J. Giersdorf
Auditor | Tax Advisor
Focus areas
  • Tax Structuring Advisory
  • Tax Advisory in the Area of Corporate Transformations
  • Tax Advisory in the Area of Succession Planning
  • Auditing - Annual Financial Statement Audit
  • Business Valuation