The Digital Accounting Office is the technological foundation of all our services. In concrete terms: your purchase and sales invoices are transmitted paperlessly — notably via the Peppol network, which has become the standard for the structured electronic invoicing mandatory between Belgian businesses since 1 January 2026. They are recognised, processed and filed in our digital accounting tools. Your bank statements and salaries are integrated automatically. Our exchange platform My Catalyst centralises your documents, your requests and your approvals. And dashboards give you access to your key indicators: turnover, margin, cash position, tax deadlines. All of it accessible wherever you are: at the office, on the move or between two appointments, your financial situation fits in your pocket. An invoice to send, a question to ask, a document to validate: a few seconds suffice, and your request arrives directly with your dedicated expert — not in an anonymous mailbox.

• Digital environment We choose and configure invoicing and payment tools, connect Peppol, organise document flows and integrate banks.
• Continuous processing We provide continuous accounting processing of paperless flows.
• Reporting and AI We configure dashboards, interim statements and tailor-made indicators, with AI-assisted analysis where it adds value.
• Digital compliance We support compliance with mandatory electronic invoicing and upcoming tax digitalisation.
• Team training We train your teams so the transition becomes a gain, not a constraint.

Compliance first: structured electronic invoicing is no longer an option in Belgium, and the digitalisation of tax obligations will intensify in the years ahead; better to make it an advantage than a catch-up exercise.

Efficiency next: the manual processing of documents costs time, generates errors and delays your figures.

Steering last: in an uncertain environment, deciding on the basis of figures that are six months old is a competitive handicap that no one can afford any longer.

We are digital-first by conviction, but never digital-only: behind every tool there is your dedicated expert, reachable and involved. We choose proven solutions from the Belgian market and integrate them into a coherent process, rather than imposing a single platform that would not match your reality. And we measure the success of a digitalisation by a single criterion: the time it gives you back and the quality of the decisions it enables.

Today, this conviction extends naturally into the age of artificial intelligence. We integrate AI tools and generative technologies where they add real value: processing faster, spotting an anomaly or an opportunity in your figures, preparing in a few minutes an analysis that used to take hours.

But the principle remains intact: AI accelerates and illuminates, the human decides and advises. Personalised advice, a fine understanding of your situation and the relationship with your expert remain at the heart of everything. Choosing a digital, AI-oriented accountant means securing an advisor who is genuinely up to date — able to turn the power of these tools into concrete decisions for your business.

This philosophy comes with an absolute requirement on one point: the security of your data. Your financial information is among the most sensitive in your business; it is hosted on secure professional solutions, access is controlled and traced, and confidentiality is guaranteed by our code of conduct as ITAA-certified accountants — a protection no consumer tool offers. Digitalising your accounting with Catalyst means gaining speed without giving up anything on confidentiality.

• Peppol and electronic-invoicing compliance
• Full digitalisation for self-employed professionals, liberal professions and SMEs
• Real-time dashboards and management reporting
• AI-assisted data analysis and reporting
• Sector-specific point-of-sale, invoicing and payment integrations
• Digital support for growing businesses
• File recovery and clean-up

• Less paperwork: Documents are transmitted in a few seconds, wherever you are.
• Fresh figures: Your numbers are reliable, current and permanently accessible.
• Handled obligations: Digital obligations, starting with electronic invoicing, are taken care of.
• Automation: Repetitive tasks are absorbed by automation and AI.
• More advice: The time gained is reinvested where it holds the most value: in the advice you receive.

Digital accounting has been in Catalyst's DNA from the start — not since yesterday.

Too many accounting firms call themselves "digital" or "2.0" merely because their clients send them invoices electronically: that differentiation is as simplistic as it is mistaken.

At Catalyst, it is our entire set of processes that is digitalised, and has been for more than ten years.

Our founder, Hassan Ayed, himself co-founded one of the most widely used digital accounting applications for the self-employed in Belgium: Accountable. We are not discovering these technologies: we practise them at scale, every day, for all our clients. And we have already turned our gaze to the next frontier — artificial intelligence and generative tools — to continue offering, tomorrow as today, the right advice at the right time to the right client. It is that head start that allows us to promise you a friction-free digital transition and support that is resolutely of its time.