DELATTRE XAVIER

Delattre Xavier SRL is a chartered accounting and tax firm on the Grand-Place in Péruwelz, in Hainaut. The company is registered with the ITAA under number 50.309.957. It is represented by its founder, Xavier Delattre, a certified chartered accountant and certified tax adviser with twenty-three years of practice. A second company in the group, Delattre Brussels, is based in Schaerbeek. The team has seven people: the founding accountant, four bookkeepers managing client files, an office manager and an assistant. Each client has a clearly identified contact person.

The firm has made fully digital working its guiding principle. Documents are shared securely, figures can be accessed remotely and follow-up happens in real time, which lets it support clients wherever they are, in Péruwelz, Liège or Namur. Tools are chosen to fit each client's actual needs; the website features Odoo and Billtobox among others. For businesses equipping themselves, the firm installs and configures the system, connects the bank, automates flows and sets up dashboards: monthly revenue, margin, cash, tax forecasts, fixed and variable costs.

The offer covers complete bookkeeping for companies, self-employed people and private individuals, management of electronic invoicing and online payments, and tax returns and monitoring of legal obligations: personal income tax, corporate income tax and VAT. Since business-to-business e-invoicing became mandatory on 1 January 2026, the firm has offered fast connection to the Peppol network, with technical support and help choosing and configuring a solution suited to the size and sector of the business.

Tax disputes are among the services the firm highlights. It describes its approach as a mix of technical rigour, measured combativeness, solid argument and strategy, and holds that an accountant must be able to defend a client against the tax authorities when needed. It also stresses anticipation: monitoring legal obligations, assessing tax impacts, flagging upcoming deadlines and running simulations before important decisions.

The firm provides strategic advice on personal taxation, structuring and wealth, along with legal and social security support: incorporation formalities, company law and employer obligations. For self-employed clients, it runs social contribution simulations based on expected income, advises on adjusting provisional contributions and reviews their social security position, from pension to incapacity cover.

Clients are SMEs, self-employed people and liberal professions, both local and international, in industry, trade and the non-profit sector. The firm says it works with entrepreneurs who want to equip themselves, understand and plan ahead, and adapts its support to each client's size, sector and digital maturity. It publishes articles on e-invoicing, the social status of the self-employed and using accounts to manage a business.