Your accountant can save you — or cost you — thousands of euros
In Belgium, a good accountant isn't a luxury — it's an investment. The difference between an accountant who optimizes your taxes and one who just fills in your declarations can reach EUR 3,000 to EUR 8,000 per year for an average self-employed person. And believe me, after switching accountants twice in five years, I know what I'm talking about.
Whether you're a freelance developer in Brussels, a craftsman in Liege, or a consultant in Antwerp — choosing your accountant is probably the most important financial decision of your freelance career. This guide gives you everything you need to make the right choice, and to recognize when it's time to switch.
The 7 essential criteria
1. ITAA-certified (mandatory)
In Belgium, only ITAA-certified accountants (Institute for Tax Advisors and Accountants) can legally manage your accounts and prepare tax declarations. Always verify the certification number at itaa.be.
In practice: if you face a tax audit and your accountant isn't certified, you have zero protection. The ITAA requires continuous education and professional liability insurance. That's your safety net.
2. Specialized in your sector
An accountant who knows your industry's specifics is worth their weight in gold. An IT freelancer has different needs than a restaurant or a doctor. Ask: how many clients do you have in my sector?
Real example: a freelance developer can deduct IT equipment, internet subscription, part of the rent when working from home, technical training, and even certain SaaS subscriptions. A generalist accountant might miss the investment deduction (investeringsaftrek) on your new MacBook Pro — that's easily EUR 500 in savings. A specialized accountant will tell you about it unprompted.
3. Proactive, not reactive
The ideal accountant doesn't just fill in your declarations once a year. They contact you before deadlines (voorafbetalingen, VAT, client listing), alert you when your social contributions will increase, and suggest tax optimizations like VAPZ/PLCI or investment deductions.
A good accountant calls you in November: "Your income is higher than expected this year, I recommend making an additional voorafbetaling before December 20th to avoid the surcharge." An average accountant just sends you the declaration in June of the following year, when it's too late to optimize anything.
4. Transparent pricing
Rates vary enormously: from EUR 75/hour for a small firm to EUR 200+ for big names. Ask for a detailed quote. Some work on a flat fee (EUR 800-2,500/year for a freelancer), others by the hour. Watch out for hidden extras: invoice encoding, letters to the tax office, phone questions.
Ask clearly: "If I call you with a quick question, do I get charged?" Some accountants bill every email. Others include unlimited questions in their flat fee. The difference over a year can be staggering.
5. Accessible and responsive
How quickly do they respond to emails? Can you call directly? Do they have an online portal where you see your documents in real time?
Real scenario: you receive a registered letter from the tax authority on a Friday afternoon. Is your accountant reachable? Do they at least send a text to reassure you? Or do you have to wait until Monday morning, anxious? These are the moments that reveal the true quality of an accountant.
6. Compatible with your tools
Your accountant must be able to work with your invoicing software. With DEMFACT, your accountant connects directly via the accountant portal — real-time access to all invoices, one-click CSV export, multi-client management.
The DEMFACT accountant portal lets your accountant view all incoming and outgoing invoices, download supporting documents, and export entries in CSV format compatible with most Belgian accounting software (Exact, Yuki, Octopus, BOB50). Your accountant saves time, and you pay fewer billable hours.
7. Up to date with PEPPOL
Since April 1st 2026, PEPPOL invoicing is mandatory for B2B. Your accountant must understand what this means: UBL 2.1 format, PEPPOL network, 7-year archiving.
This is not an exaggeration. An accountant who didn't anticipate the PEPPOL mandate lacks regulatory awareness. If they missed this, what else have they missed? The new rules on the flat-rate scheme? Changes to social contribution rates? Proactiveness starts with staying current on tax law.
Red flags: signs your accountant isn't right for you
After years of talking to other freelancers, here are the most common warning signs:
They don't know PEPPOL. If in 2026 your accountant gives you a blank stare when you mention PEPPOL, that's a serious problem. Electronic invoicing is mandatory. Full stop.
They take weeks to respond. You send an email on Monday, you get a reply the following Friday — if you're lucky. Meanwhile, your VAT deadline has passed and you have a fine.
They charge hidden fees. You thought you were paying EUR 1,200/year, but the final invoice is EUR 1,800 because every phone call, every letter to the tax office, every "little extra" is billed separately. Always ask for an all-inclusive quote.
They never suggest optimizations. A good accountant doesn't just report your taxes — they actively look for ways to reduce them. If they've never mentioned VAPZ, investeringsaftrek, meal vouchers, or optimizing your voorafbetalingen, they're doing the bare minimum.
They use outdated software. If they still ask you to fax invoices (yes, this still exists), or if they work with a DOS program from the 1990s, you deserve better. A modern accountant uses modern tools.
When to change your accountant
Switching accountants scares many freelancers. It feels like "divorcing" someone who knows your entire financial situation. But sometimes it's necessary.
Good times to switch: the start of a new fiscal year (January), after your annual accounts are finalized, or when you change your legal structure (switching from sole proprietorship to a company). The worst time: in the middle of a tax audit.
How to make the transition: notify your current accountant in writing (registered mail preferred). Ask them to transfer your complete file to the new accountant: VAT declarations, balance sheets, annual accounts, correspondence with the tax office. They are legally obligated to do so. Plan a one-month overlap so the new accountant can familiarize themselves with your file.
Tip: before leaving, make sure all current declarations have been filed and you have no unpaid invoices with your old accountant. Parting on good terms is always preferable.
The first meeting checklist
You've spotted an accountant who seems to match your needs? Here's what to prepare:
Documents to bring:
- Your ID card and VAT number
- Your last tax declaration (or tax assessment notice)
- Your last 3 VAT declarations
- Your latest annual accounts (if you have a company)
- An overview of your monthly turnover
- The list of your current deductions
- Your specific questions
Questions you must ask:
- Are you ITAA-certified and what is your number?
- How many freelancer/SME clients do you manage?
- What is your exact rate and what does it include? Are there possible extras?
- How do we communicate (portal, email, phone)? What's the average response time?
- Do you know PEPPOL and electronic invoicing?
- Do you proactively suggest tax optimizations (voorafbetalingen, VAPZ)?
- Can you connect to my invoicing software?
- What happens during a tax audit — is it included in the flat fee?
- Do you have professional liability insurance?
How much does an accountant cost in Belgium?
Rates vary not only by type of file, but also by region:
For a sole proprietor: between EUR 800 and EUR 2,500/year flat fee. This typically includes quarterly VAT declarations, the annual tax return, and a limited number of consultations. In Brussels, rates average 15-20% higher than in Wallonia or Flanders.
For a company (BV/SRL): between EUR 1,500 and EUR 5,000/year depending on complexity. Annual accounts, filing with the NBB, corporate tax declarations, and director remuneration sheets are usually included. Note: exceptional operations (capital increase, dividends, dissolution) are almost always billed extra.
Hourly: EUR 75-150 depending on region and experience. Don't forget: these costs are 100% tax-deductible as professional expenses. An accountant at EUR 2,000/year actually costs you about EUR 1,000 net if you're in the 50% marginal tax bracket.
Online vs traditional accountants
Online accountant pros: rates often 20-30% cheaper, extended availability (some respond evenings and weekends), modern client portal with 24/7 access, native integration with invoicing software, and no need to travel.
Traditional accountant pros: personal trust relationship built over time, face-to-face meetings for complex questions, deep knowledge of your personal and family situation, local network (notary, banker, insurer), and sometimes better representation during tax audits — nothing replaces an accountant who physically accompanies you to the tax office.
The hybrid solution: more and more traditional accountants are adopting digital tools. You can have a local accountant who connects to your DEMFACT platform to view your invoices in real time, while keeping the option to meet in person for tax strategy discussions over a coffee. That's often the best of both worlds.
The winning duo: accountant + good software
The best accountant in the world can't work efficiently if you send them your invoices in bulk by email once a quarter. It's like giving someone a 1,000-piece puzzle without the picture on the box.
With a tool like DEMFACT, your accountant has permanent access to your invoices, your VAT is calculated automatically, and PEPPOL format compliance is guaranteed. Result: fewer accountant hours, fewer errors, and more money in your pocket.
The accountant-software-freelancer triangle
The success of your financial management rests on a triangle: you, your invoicing software, and your accountant. If any of the three links is weak, the whole structure suffers.
You are responsible for creating your invoices on time, scanning your receipts, and classifying your expenses correctly. Your software (DEMFACT) automates the formatting, PEPPOL delivery, VAT calculation, and archiving. Your accountant interprets the numbers, optimizes your taxes, and represents you before the tax authorities.
When these three elements work together, accounting stops being a chore and becomes a competitive advantage. You know exactly where you stand financially, you never miss a deadline, and you pay the right amount of taxes — not a cent more.