Our services at a glance

two pens next to the MacBook


As your digital partner in all tax matters, we offer comprehensive expertise and commitment to provide you with not only comprehensive but also holistic support. From start-up and growth to subsequent sale or generational change.

We are there for you right from the start, providing reliable support to help you and your company move forward. Our focus is on advising medium-sized businesses, freelancers, and high net worth individuals. Our digital approach leaves us more time for personalized, comprehensive support.

This means that active and creative consulting is not just a wish, but also a reality.

Our services at a glance:

  • corporate tax law
  • Conversions and restructuring
  • Tax advice regarding legal form
  • Tax advice on company sales and acquisitions (tax due diligence)
  • International tax law
  • Inheritance and succession planning for companies and private individuals
  • Tax structuring of real estate assets
  • Support during tax audits
  • Support in extrajudicial and judicial appeal proceedings in disputes with the tax authorities
  • Business and personal tax returns

At completax, you receive a comprehensive package: in addition to preparing your business and personal tax returns, we take care of your financial accounting and profit calculations, including support in working with auditors for voluntary or statutory audits.

The provision of receipts and payment transactions is carried out exclusively digitally.

We support you with sensible and time-saving processes to make the preparatory work as efficient as possible, so that you have time for what matters most—your business.

Based on the accounting data, we can create meaningful and detailed financial reports and evaluations. This gives you a constant overview of your figures and your company, enabling you to make more targeted business decisions.

Upon request, we can also handle your ongoing payment transactions and dunning process.

Our services at a glance:

  • Preparation of ongoing and digital financial accounting
  • Support with the implementation of digital accounting processes (setup analysis, interface integration, and process automation)
  • Preparation of cash basis accounting statements
  • Preparation of annual financial statements in accordance with commercial law for micro-capital companies to medium-sized capital companies
  • Preparation of business evaluations and balance sheet analyses
  • Preparation of financial and liquidity plans
  • start-up consulting
  • Derivation of the annual financial statements under commercial law from US GAAP/IFRS accounting for domestic subsidiaries of foreign corporations

Thanks to our many years of experience working with numerous Berlin start-ups and their founders, we are also trained in this area.

We assist you in finding the right legal form and financing options, highlighting special features, advantages, and disadvantages. Thanks to our large network of lawyers and notaries, you are always on the safe side.

Our services at a glance:

  • Sparring partner for banks, investors, and auditors in the purchase and sale of companies or parts of companies
  • External CFO for scaling start-ups
  • Financial and liquidity planning
  • Asset planning and management
  • Establishment of limited liability companies for international clients/investors aiming to gain a foothold in the German market

If our comprehensive range of services has piqued your interest, please feel free to schedule an initial meeting to get acquainted: