AbmaDiepenhorst is a next-gen accounting firm based in the Groot Handelsgebouw in Rotterdam.

The firm was founded by Joost Abma and Leon Diepenhorst. Social, street-smart, and sharp-minded. Experienced chartered accountants with outspoken views to advise.

Their time at university marked the beginning of a close friendship and years of collaboration in the profession. AbmaDiepenhorst is the result of their vision for a modern accounting firm, focused on delivering high-quality services and mentoring the next generation of accountants.

The firm has grown into a diverse and multidisciplinary team of professionals and we have built an extensive external network. Our accountants are affiliated with the Royal Netherlands Institute of Chartered Accountants. Our firm is a member of SRA, who ensures periodic quality assessments.

The firm's identity is characterized by a commitment to quality and a people-centered approach, based on energetic relationships and genuine involvement. We work with fixed fees and don't track billable hours. This allows us to fully focus on the quality of our services and the development of our colleagues.

AbmaDiepenhorst, everything in its right place.