For more than 15 years, we at sonntag have been pursuing a mission:

We secure the future of companies built up over a lifetime, arrange corporate succession and create fresh perspectives – and we do all this with an unyielding will, dedication and passion.

As experts for mergers & acquisitions (M&A) in the high-credit German mid-size business sector, we advise our clients in the purchase and sale of businesses.

We determine purchase prices on the market without revealing the identity of our clients. Thereby we are confronting our clients' ideas with the actual market resonance even before the intention of selling is disclosed.

Our approach proves us right: We were honored by WirtschaftsWoche with the "Best of Consulting" Award 2018 in the field of M&A - Mittelstand.

Our service for you

Market value determination

Without revealing your identity, you will find out what the market is really offering for your company.

Company sale

Once we have determined the market value for you, we will accompany you during the transaction up to the actual cash inflow.


If called for, we will involve experienced and highly competent partners and experts from our network, such as attorneys and tax consultants.

Transaction preparation

With a customized structure, we will optimize your business fiscally in collaboration with our partners in order to attain the maximum purchase price.


Are you interested in our services?

Please do not hesitate to contact us via phone or e-mail and let us arrange an appointment for a personal meeting.

We look forward to meeting you.

Tel.: +49 (0)641 - 9446830

Contact us