Complete support for your business

CO-ACC was founded in 2015 with one clear objective: to support Belgian businesses and organisations through personal, committed and professional service.

We support SMEs, self-employed professionals and non-profit organisations with accounting, tax, VAT obligations, personnel administration and corporate legal formalities. Our role goes beyond correctly meeting statutory obligations: we also aim to give our clients a clear and up-to-date view of their financial position.

Client-focused from day one

At CO-ACC, the client is at the centre of our approach. We deliberately choose personal cooperation, short communication lines and advice tailored to the day-to-day reality of your business or organisation. Whether it concerns day-to-day accounting, tax returns, financial reporting, an investment, a restructuring or the further professionalisation of your administration, we work with you and provide a clear, practical approach.

Personal support

CO-ACC supports Belgian SMEs, self-employed professionals and non-profit organisations with accounting, tax, VAT, personnel administration and legal advisory. We take administrative obligations off your hands and turn your figures into clear information that supports your decisions.

Our team

Our team has extensive experience in accounting, tax, personnel administration, VAT and legal matters. You can rely on us both for recurring compliance obligations and for targeted advice when important decisions or changes arise within your business or non-profit organisation.
CO-ACC Mick Celis

Mick Celis

Managing Director | Tax Accountant (ITAA)
Mick Celis is a tax accountant registered with the Institute for Tax Advisors and Accountants (ITAA). He holds a degree in Business Management, specialising in Accountancy and Taxation, from Thomas More.
He has been active in the accounting and tax sector since 2008. During this time, he has built extensive experience advising businesses and organisations, with a particular focus on international companies, foreign groups and non-profit organisations operating in Belgium. He has been a director of CO-ACC since its establishment in 2015.

Within CO-ACC, he advises Belgian SMEs, self-employed professionals and non-profit organisations on accounting, corporate income tax, VAT and financial-legal matters. His approach combines technical expertise with practical advice tailored to the client’s day-to-day operations, internal organisation and future plans.

He also has extensive experience with Belgian accounting principles (BEGAAP), group reporting, international reporting requirements and cross-border matters. This enables CO-ACC to provide expert support to both local businesses and associations and Belgian entities of international groups.