Guides
Accounting and tax guides
Practical, sourced guides to Belgian accounting and tax on ITAA.
How many accountants are there in Belgium? The 2026 panorama in figures and maps
Belgium has 11,250 active accounting and tax firms, one per 1,055 inhabitants. Their spread mirrors the population at regional level but varies from 1 to 3.4 between Walloon Brabant and the province of Luxembourg, and from 0 to 28 firms per 10,000 inhabitants between municipalities. Density, age, size, the Big Four, financial health and ITAA figures: the full panorama of the profession, sourced and mapped.
How do you change accountant in Belgium?
You can change accountant at any time: no law ties you to a firm, only your engagement letter sets any notice period. In practice, the new firm contacts the previous one to arrange the handover, and the transfer of documents is formalised with an inventory dated and signed by both parties. The best moment remains just after the annual accounts have been filed.
Accountant, tax accountant or accounting firm: what is the difference in Belgium?
Accountant and tax accountant are professional titles protected by law, governed by the ITAA since 30 September 2020. « Fiduciaire », the common Belgian word for an accounting firm, is not a title: it names a business that employs one or the other of these professionals. The practical difference between the titles concerns the assignments the law reserves for certified professionals, not the quality of routine accounting work.
Looking for an accountant?
The guides link to our independent directory of chartered accountants, tax accountants and accounting firms in Belgium.