Comptable à Mons : experts-comptables, bureaux et cabinets

Brainagement is an accounting office on Avenue d'Hyon in Mons, active for more than 25 years and ITAA-certified. Alain Mariotti and Christel Venquier lead a team of accountants serving companies, the self-employed, liberal professions and non-profits. The office offers accounting management, tax and social advice, help with starting and selling a business, and special assignments such as mergers, demergers and liquidations.

Fiduciaire Taulet is an accounting and tax firm on avenue Wilson in Jemappes (Mons), founded in 1982 by Jacques Taulet and registered with the ITAA. A team of around ten people, chartered accountants, tax accountants and accounting graduates, serves self-employed people, SMEs, liberal professions, associations, private individuals and a few large companies across Wallonia and Brussels. The firm keeps the books, prepares annual accounts, files VAT and tax returns, supports company formations and advises on management and financing.

Joiris, Rousseaux & Co is a firm of registered statutory auditors founded in 1999, headquartered on rue de la Biche in Mons, with two further offices in La Louvière and Charleroi. Listed in the public register of the Belgian Institute of Registered Auditors, it has sixteen people including five signing audit partners. The firm does no bookkeeping or tax work: it certifies annual and consolidated accounts, holds around 200 statutory auditor mandates and carries out the legal assignments linked to contributions, mergers, demergers and liquidations, for SMEs, the public sector and non-profits.

Mensia is an accounting fiduciary in Mons, based in Maisières and founded in 2002 by Bertrand Cardinal, who has more than 35 years of experience. Its team of eight looks after more than 200 clients, from the self-employed to SMEs. It handles general accounting, annual accounts, VAT, personal tax returns, company formation and assistance during tax audits, with a partner in Valenciennes for French cases.

Proxicompta is a fully digital accounting firm founded in Quevaucamps in 2008. It moved to Mons in 2015 and to Havré in March 2026, with further offices in Tournai and Ittre. Four partners and around fifteen staff support the self-employed and SMEs with company formation, bookkeeping, personal income tax, corporate tax, VAT, tax audits and the search for financing. Small companies can choose an all-in monthly package.

PRS Fiduciaire est un cabinet comptable et fiscal établi à Ghlin, près de Mons, desservant les indépendants, PME et sociétés dans tout le Hainaut. Le cabinet propose une gamme complète de services incluant la tenue de comptabilité générale, les déclarations et l'optimisation fiscale, ainsi que des conseils en gestion financière. Il accompagne également ses clients dans la constitution de sociétés. En tant que cabinet inscrit auprès de l'ITAA, il offre une expertise personnalisée et met à disposition des outils de simulation en ligne pour faciliter la gestion financière.

Dorian Terrier practises under the name Fiduciaire Comptable PME Informatic, on Rue de Milfort in Mons. The office presents itself as a chartered accountant and tax adviser. Its site sets out the legal scope of both titles: organising the accounts, correcting them and advising on the company's financial, economic and tax position, along with advice, assistance and representation in tax matters.