aternio has a heart that beats for entrepreneurs, idealists and creative people. For those who seize opportunities and leave nothing behind. For start-ups, growing or fully mature companies, for national and international non-profit organisations and foundations. For hard workers who never get enough of it. For those who are concerned with maintaining and transferring family wealth. For those who innovate and dream. For every entrepreneur like you.

At whatever stage of your life, career or ambitions you are, we like to listen to how you see things. You tell us what you need most, most urgently, preferably, or all at once. We ensure that we approach it smartly, efficiently and thoroughly. As a famous accountant once said, “If you start me up, I’ll never stop.”

What we do is very personal and unique for every entrepreneur. With us you will not get bite-size uniformity, but a solution that uniquely fits you. We do what is necessary and see how we can go one step further. That’s how we make the difference, and that’s how you can make a difference too.

Because aternio wants to mean more to you than finance & legal, you also have access to in september. Our sister organization in september is focusing on people & strategy.

milk and sugar?

Admit that you're not just coming for that nice cup of coffee. Are you looking for excellent advice and relevant inspiration in the field of finance & legal? Or do you rather seek guidance in the field of people & strategy? We're looking forward to getting to know your needs and ambitions.

from history to today

Our roots go right back to the 1960s, with Manu Lemmens. The creation of Fidulemco in 1984 formed the legal basis for the foundation of the current organisation. In 2000, under the direction of Johan Lemmens, the office became part of an international association of independent accountancy firms, the forerunner to PrimeGlobal. Alongside the office in Hamme, branches were opened in Antwerp and Brussels. The office was co-founder of a national economic interest grouping in 2007. In 2015, a decision was taken to leave this economic interest grouping and to continue under the name aternio. In 2017 Karen Muylaert and Cindy Vervaet decided to join Johan as partners and a driving force of aternio. 2019 is a year of change: aternio finance and aternio legal go through life independently and they get a sister: in september.

our certificates