Welcome to Werhausen & Kassel:

External CFO-Services for companies and investors – specialized in complex financial situations
For over 35 years, we have been supporting companies and investors as an External CFO, helping them navigate all challenges related to financial management and strategic direction. We are your partners in all finance matters, from operational challenges to long-term strategy.

For over 35 years, we have been partnering with entrepreneurs and CEOs who seek more: more profit, more time, and greater clarity in making crucial business decisions. As an external CFO, interim CFO, and strategic partner for companies with annual revenues of €5 million or more, we provide comprehensive financial management support to help you achieve your business goals.
Are you looking to discover the key levers that can drive long-term profitability? Do you want to identify the most profitable areas of your business and learn how to maximize what's left for you as an entrepreneur, as well as for the company?
If so, we are the right partner for you. With over 35 years of experience as financial experts, we understand the strategies that enhance business profitability and know how to implement them effectively!
Our clients are often in a phase of transformation. They might be facing a significant growth surge, navigating a crisis of varying degrees, or undergoing major structural changes, such as succession planning or responding to a market shift.
In these critical transformation phases, it is essential that the financial foundation is solid, that the business is actively managed using the right key performance indicators (KPIs), and that there is a clear strategy to achieve the set objectives.
As an external CFO, we have guided numerous companies through periods of change. By optimizing financial data and the overall financial management, we have sustainably increased the profitability of these businesses.
Is it time to upgrade your finances?
Partner with an external CFO to elevate your financial strategy!
Our Services
External CFO
As an External CFO (Chief Financial Officer) or Interim CFO, we assist you with all decisions related to corporate and financial strategy.
We handle all financial matters, identify and optimize your profit-driving metrics, and comprehensively enhance your financing structure to improve liquidity. Partner with us for your financial management needs, allowing you to focus on growing your business!
Business Planning
Business success is achievable through strategic planning. Growth, scaling, and investments are only feasible if the company generates sufficient profits and provides a reasonable entrepreneur salary.
In today’s turbulent times, securing this requires a concrete planning approach that starts with strategy and business model development and is documented through comprehensive financial planning.
Business Modeling & Controlling
Effective controlling requires systematic monitoring of your company's planning and execution.
We assist you in implementing and advancing your customized controlling system, ensuring you have ongoing visibility into your goal achievement. We implement the system within your organization, so you retain long-term in-house expertise.
Financial strategy & CEO-Sparring
How can I position my company to ensure it is future-proof and ready for succession? What is the right strategy for my corporate structure and succession planning?
Do I need a holding company, or what is the best way to protect my assets? We work with you to address these critical questions, providing strategic guidance and support throughout all phases of your business journey.
Werhausen & Kassel
Over 35 Years of Expertise and Experience
Nicole Jasmin Kassel (née Werhausen) and Justin L. Kassel lead the company in its second generation. As a dream team, their expertise in controlling, finance, and strategy perfectly complement each other, allowing them, as external CFOs, to help entrepreneurs across Germany increase profits and manage key business metrics.
They are known for their strategic foresight, execution strength, and passion for both businesses and their people. Every company receives personalized attention tailored to its unique challenges, because financial figures are the heartbeat of every business, requiring careful attention and customized solutions.
For over 35 years, we have been working with entrepreneurs, successors, and founders from various industries. Our clients companies are mainly based in Europe with annual revenues starting at €5 million.
The businesses we work with are often in a phase of transformation. They may be experiencing significant growth, navigating a crisis of varying degrees, or undergoing major structural changes, such as succession planning or adapting to a market shift or seeking for investment.
We work across all industries but have particular expertise in:
- IT/Software, E-Commerce, & Lifestyle
- Technology and Digital Companies
- Production & Manufacturing
- TV & Show Production
Contact us today. We look forward to the opportunity to work with you!
Which of our services are you interested in? Let us know how we can assist you!
External CFO / CFO Service
Business plannung & modelling
Controlling
Strategic business challenge
cooperation
other