Registering as Self-Employed in Belgium: A Guide for Sole Proprietors

Do not invoice until both your immigration status and the activity itself permit self-employment. Belgian, EU/EEA and Swiss nationals generally do not need a professional card. Many non-EU nationals do, unless a specific exemption applies - for example through certain family, protection or residence statuses. A residence card that permits employment does not automatically permit an independent activity. Use the relevant regional professional-card checker for the place where the activity is mainly established: Flanders, Brussels or Wallonia. Obtain written confirmation for an exemption and keep it with the CBE file.

Professional card and residence transaction

A first application costs €140 in all three regions; issuance costs €90 per year of validity. A two-year card therefore costs €320 before translations, legalisation, visa, travel or counter services. Apply through the Belgian post where you legally reside if abroad; an eligible lawful resident may apply through the prescribed Belgian route. Submit passport/residence evidence, criminal-record evidence where requested, qualifications/licences, detailed project and role, market/competition evidence, financing, two-year financial/cash-flow plan and proof of sufficient personal means. Requirements are regional: Flanders, for example, published a 2026 economic-added-value test including €22,838 held in the applicant’s account and a subsistence reference updated during the year. Do not reuse that as a Brussels or Walloon universal threshold.

The professional card does not itself grant residence. A successful applicant abroad normally uses the regional approval for a D visa. For covered applications, official checklists in 2026 state a separate €242 Immigration Office contribution; since 1 July 2026 the consular handling fee for a D visa is €250, plus any local application-centre or document costs. Confirm both amounts and exemption rules with the competent post immediately before payment. Never pay an “agent” for a guaranteed card. Flanders normally communicates a decision within 120 days after admissibility and provides a 30-day regional appeal route; other regions and residence refusals have their own remedies.

Choose the correct contribution category

Identify whether the work is a main occupation, secondary occupation, student self-employment, pensioner activity or helping-spouse role. Secondary status requires a sufficient employee/civil-service workload or another qualifying principal social status; it is not created merely by calling the business “part time.” Student status has age, study and enrolment conditions. Ask a social-insurance fund to confirm the category and the contribution consequences in writing before the start date.

Also test for false self-employment. Genuine independence means controlling how and when work is organised, bearing commercial risk, setting prices, using multiple clients or being free to do so, and not working under an employer’s authority. One client is not automatically illegal, but employee-like schedules, instructions, approval, equipment and disciplinary control are warning signs. Reclassification can create wage, social-security, tax and penalty claims. Ask the Administrative Commission on Employment Relations for a ruling where the boundary is material.

Finally check the profession, premises and product. Food, construction, transport, childcare, healthcare, security, travel, alcohol/tobacco, street trading, music, environmental installations and regulated professions can require qualification recognition, FASFC/AFSCA registration, municipal or regional permits, insurance and inspections before opening. Wallonia still asks certain starters to demonstrate basic management knowledge, unlike the general Flanders/Brussels start. Put every permit, approval date, renewal and inspection in the launch plan; CBE registration never replaces them.

For a small solo activity, compare a sole proprietorship with a BV/SRL before registering. A sole trader has no separate legal person, no notary, no minimum capital and simple decision-making, but business and private assets are legally one pool: creditors may reach personal assets. Consider professional liability cover and ask a notary about a declaration protecting the principal home where relevant. Profit is taxed through personal income tax after deductible professional expenses and social contributions.

A BV/SRL is a separate legal person with liability generally limited to contributions, although directors/founders can still be liable for faults, guarantees or clearly inadequate initial resources. One founder is enough and there is no fixed minimum capital, but a legally adequate two-year financial plan and sufficient start-up assets are required. Incorporation is by notarial deed, with articles, publication, UBO registration, company bank account, double-entry accounts, annual accounts, company tax and an annual company contribution. The standard-model notarial tariff includes a fixed €217 fee plus €298 administrative forfait excluding VAT, but searches, deed taxes, publication, registration and advice are extra; request an all-in quote. In practice, reserve roughly €1,500–€2,500 for a straightforward cash-contribution incorporation and more for a bespoke plan or contributions in kind. That is not operating capital.

Other company forms are not free liability shortcuts: an SNC/VOF or general partner in an SComm/CommV can have unlimited joint liability. A non-profit is not a vehicle for distributing trading profit. Use the official legal-form comparison, then ask a notary and an ITAA professional to model the same expected revenue, costs, salary/drawings, social contributions, tax, accounting and closure cost. Do not choose a BV solely because someone quotes its headline tax rate.

Name, region and address

Search the proposed name in CBE Public Search, the Belgian Official Gazette and, if branding matters, the Benelux trademark register. A sole trader’s legal name remains the individual’s name although a trade name can be registered. A company name must carry its legal form. Check domain and social handles separately; CBE availability is not trademark clearance.

Choose the real establishment region, not the cheapest administration. Regional professional-card, economic-access, premises, environmental and grant rules follow actual location/activity. A home address may be published in CBE and can affect lease, mortgage, co-ownership rules, planning, insurance and municipal taxes. Obtain landlord or lender consent where required, check whether clients, stock, signs or nuisance are permitted and separate a correspondence service from a genuine establishment unit. A virtual office cannot disguise where activity is conducted.

A first-year cash comparison

A VAT-liable sole trader using Liantis’s published example pays €111.50 CBE registration plus €69 excluding VAT for VAT activation (€83.49 including VAT), so €194.99 before bank, software, permits, insurance or advice. A KBC sole-trader business account example starts at €51/year; Accountable has free mobile Peppol invoicing, while its web invoicing example is €9.90/month excluding VAT. Professional-accounting market quotes for a straightforward sole trader commonly range around €1,000–€2,500/year, but hiring an accountant is not legally mandatory for every sole trader. Quote the actual number of invoices, VAT/cross-border work, payroll and filings and check the professional in the ITAA public register.

Build two totals: mandatory launch cost and twelve months of operation. Include professional-card/visa if applicable, CBE/VAT, bank, quarterly social contributions, Peppol, insurance, permits, accountant, workspace, phone, equipment and three-to-six months’ cash reserve. Select the form only after liability and net-cash modelling, not because one setup appears €100 cheaper.

Prepare the launch before booking a counter. Fix the legal form, exact start date, business/trade name, Belgian address, professional bank account, phone/email, every real NACE-BEL activity and each establishment unit. Bring eID/itsme or accepted identification, professional-card/exemption evidence if relevant, qualification/access evidence and permit applications. Starting too early can breach immigration, profession or social-security rules; starting too late can make invoices and expenses inconsistent.

Register the sole proprietorship

Choose one of the eight accredited enterprise counters rather than an unrecognised intermediary. At the start of 2026, CBE registration costs €111.50, including one establishment unit, plus €111.50 for every additional unit. The counter records the enterprise and establishment and issues the enterprise number. Compare service prices separately because the state tariff does not include every task. Liantis’s 2026 list, for example, charges €69 excluding VAT for VAT registration/change and €44 excluding VAT for VAT cessation; its online CBE-plus-VAT example totals €194.99 including VAT. Social-fund affiliation there is free. Ask whether a quote includes NACE review, VAT e604A, permits, professional card, bank or later corrections.

Check the result in CBE Public Search: name, address, start date, legal status, activities and establishment units. Correct errors immediately. Certain contact, trade-name and bank details can be updated free in My Enterprise; chargeable activity/unit changes remain €111.50 per unit through a counter. Update required CBE data within one month of a change. Activate e-Box Enterprise and monitor it.

Activate tax and social status

Decide whether each activity is VAT taxable, exempt by its nature or eligible for the small-business exemption; “small” does not mean no VAT number. Activate through e604A in MyMinfin or the counter before taxable operations. Confirm periodic return frequency, intra-EU status, cash-register rules and sector exclusions. Put the number in the correct Belgian format on invoices and validate EU customers in VIES before applying reverse charge.

Join a social-insurance fund no later than the start and register with a health-insurance fund. The social fund confirms main/secondary/student/pension category, calculates provisional quarterly contributions and later regularises them after tax income is known. Do not assume the counter’s “free affiliation” makes contributions free. If hiring anyone, register as employer with NSSO/ONSS and use Dimona/payroll before work starts.

Finish operational registrations

Open a separate professional current account and place its number on business documents. A company must have one; a sole trader should keep it separate even where the bank product is not legally mandatory. Prices differ: KBC Business Pro advertised from €51/year in 2026, while some invoicing products bundle an account. Compare cards, transfers, cash, foreign exchange, payment-terminal fees, bookkeeping connection and closure - not only month one.

Complete FASFC/AFSCA, professional-register, municipal, environment, music, alcohol/tobacco, construction or other permissions before the regulated act. Arrange mandatory/contractual insurance: motor, workplace accidents when employing, ten-year construction liability in covered work, and any professional cover required by the profession; also price general liability, contents, cyber and legal expenses. Confirm lease and home-insurance permission for home working.

Before the first invoice, test Peppol sending and receiving, invoice numbering, VAT wording, payment terms and bank reconciliation. Save CBE extract, e604 receipt, fund affiliation, health confirmation, licences, policies and software agreement in one dated launch file. A practical go-live test is: can a customer validate the enterprise, can an in-scope Belgian business receive the structured invoice, can payment reconcile, and are tax/social reserves transferred the same day?

VAT and social contributions are separate. Under Belgium’s small-business VAT exemption, an eligible business with annual turnover no more than €25,000 excluding VAT does not charge VAT and cannot deduct input VAT, but keeps a VAT number and continuing obligations. Excluded sectors/transactions include VAT units, certain immovable work, businesses required to use a certified cash register and supplies of old materials. Starting during 2026 reduces the threshold by elapsed calendar days: a 1 July start has a threshold of €12,603, not €25,000.

Choose through e604 and monitor cumulative turnover. If 2026 turnover exceeds €25,000 by no more than 10%, the exemption can continue through the year up to €27,500, then normal VAT begins in 2027. Exceed by more than 10% and normal VAT applies from the transaction causing it. Leaving generally creates a full-calendar-year wait; the official example of switching in July 2026 allows return no earlier than 1 January 2028. Exempt businesses may still owe special VAT returns on intra-EU acquisitions/services and must meet client-listing rules. Normal monthly/quarterly VAT lets you deduct qualifying input VAT but requires pricing cash: VAT collected belongs in reserve until the Intervat return/payment.

Calculate 2026 social contributions

Main-occupation contributions are 20.5% of net taxable professional income through €75,024.54, then 14.16% on the slice through €110,562.42, before the social fund’s management percentage. The ordinary minimum uses €17,374.08, producing an official base minimum of €890.42 per quarter before fund management; primostarters can qualify for a lower first-four-quarter minimum, shown officially as €459.82 at the lower 2026 base when conditions and estimated income support it.

Examples before fund fees: €30,000 net professional income gives €6,150/year, about €1,537.50 quarterly; €60,000 gives €12,300/year, about €3,075 quarterly. A main-occupation business earning only €10,000 still faces the ordinary minimum unless primostarter relief applies. Secondary, student and pension categories have different thresholds and rights - never apply the main minimum without confirming status.

Provisional bills are later regularised when the tax authority supplies same-year income. If the estimate is higher, voluntarily increase contributions; if demonstrably lower, request reduction before the deadline. An unjustified reduction can bring supplements and increases. Contributions must reach the fund by the last day of each quarter; late unpaid principal attracts 3% each quarter and an extra 7% on 1 January for amounts first demanded in the previous year. Contact the fund before default for reduction, plan or exemption. Exempted quarters can lose pension accrual and affect supplementary-pension deductibility.

Health and tax reserves

Affiliation and paid/valid social status support health-care reimbursement and other self-employed rights; the health fund - not the enterprise counter - confirms coverage, waiting issues and dependants. Ask how reduced or exempt contributions affect sickness, maternity, pension and bridging rights. Income-replacement insurance and guaranteed-income cover are optional but price the waiting period, insured base, exclusions and whether premiums remain affordable.

For cash planning, start from revenue excluding VAT. A sole trader with €60,000 revenue and €12,000 deductible operating costs has €48,000 preliminary net; indicative contributions at 20.5% are €9,840 plus fund fee, leaving about €38,160 before personal income tax. Transfer VAT immediately, then roughly 21% of net for social contributions and an additional 25–35% of the post-contribution amount for personal tax until an adviser models household circumstances. For 2026 income, advance-tax deadlines were 10 April, 10 July, 12 October and 21 December. A first main-occupation starter in 2024–2026 avoids the assessment-year-2027 increase, but can still earn a tax reduction by prepaying.

Since 1 January 2026, Belgian VAT-taxable businesses must exchange structured electronic invoices for in-scope domestic B2B transactions. The rule also reaches most businesses using the €25,000 small-business VAT exemption. A PDF attached to email is not structured e-invoicing. Use software that exchanges EN 16931/Peppol BIS invoices over Peppol, or another mutually agreed compliant channel where legally allowed, and preserve the human-readable view and original structured data.

The rule is transaction-specific. B2C invoices, many foreign-customer transactions and activities exempt under specific VAT provisions follow their own rules; B2G already has an e-invoicing channel. Confirm edge cases such as self-billing, reverse charge, credit notes, mixed exemptions and non-established customers with the official Belgian e-invoice portal or adviser. Register one receiving access point for the enterprise, coordinate it with the accountant, test a low-value invoice and define what happens when the recipient is missing or the network rejects a document.

Choose software by total workflow

Use the government solution list, then verify current terms. In August 2026, Accountable advertised free mobile Peppol sending/receiving, €9.90/month excluding VAT for web invoicing on an annual plan and €19.90 for fuller bookkeeping. Billit advertised a free sales-invoice-only Peppol tier and paid service from €7.50/month excluding VAT, usage-based. Compare incoming and outgoing limits, receipts/credit notes, bank link, export, accountant access, support, archive, termination and data migration. Sole traders and SMEs can apply a 120% cost deduction through 2027 for qualifying e-invoicing software/advice, but a deduction reduces taxable profit; it is not a 120% cash refund.

Invoice and collect correctly

Use a continuous unique sequence and include issue date, supply date, supplier/customer legal details and VAT numbers, description/quantity, unit and net amounts, VAT rate/amount or precise exemption/reverse-charge wording, total, currency, payment account and agreed due date. Do not invent VAT wording. Correct mistakes by traceable credit note and replacement, not deletion. State late-payment interest and recovery compensation consistent with Belgian B2B or consumer rules. For consumers, display total price and mandatory charges before contract and respect withdrawal, warranty, complaint and privacy duties where applicable.

Reconcile bank and Peppol inbox weekly. Preserve contracts, quotes, timesheets/delivery evidence, invoices, receipts, VAT filings, asset records and correspondence for the applicable statutory period; Belgian tax/VAT retention commonly reaches ten years, with longer rules for some property. Use separate folders by year and immutable exports before changing software. Back up outside the vendor and restrict access.

Know the real monthly cost

Budget professional bank (KBC example from €51/year), Peppol (€0 to roughly €10/month for basic service), accountant (often €1,000–€2,500/year for a straightforward sole trader, depending on volume and cross-border/VAT work), liability/contents/income cover, phone, workspace, payment processing and equipment. An accountant is not mandatory for every sole trader, but cross-border VAT, vehicles, property, staff or multiple activities justify advice. Verify anyone using protected accountant/tax-adviser titles in the ITAA register and obtain an engagement letter listing e604, VAT returns, client listing, personal return, advice, audit help, software and exit fees.

Deduct only costs with a genuine business link and support. Mixed home, phone, internet and vehicle expenses need a defensible professional proportion; meals, clothing and cars have special limits. Keep an asset/depreciation schedule and mileage evidence. Review monthly profit, VAT, contributions, tax reserve, receivables and cash runway. Revenue is not take-home pay: transfer reserves when each customer pays and never finance operating expenses with VAT collected.

Update the business whenever the activity, address, bank account, establishment, trade name or VAT position changes. CBE data normally must be corrected within one month. Some contact, commercial-name and bank fields can be changed free through My Enterprise; adding/removing a chargeable activity or establishment through a counter costs €111.50 per unit at the 2026 tariff. A professional card may restrict the activity, location or function, so obtain regional approval before departing from its terms. Update permits, insurer, social fund, VAT e604B, clients, contracts, website and invoice template together.

If income falls, do not simply stop paying provisional contributions. Give the social fund a supported same-year estimate and request reduction. If the final income is higher, regularisation and increases follow; making an additional payment before year-end can reduce that shock. Ask early about a payment plan or exemption. Exemption is not neutral: it may remove pension rights for the quarter and affect supplementary-pension deductibility. Illness, maternity, care, disaster or forced interruption can have separate benefit or deferral routes with deadlines.

Stop a sole proprietorship in the correct order

Choose the actual final trading date and first deal with employees, customers, suppliers, subscriptions, lease, stock, open work, guarantees and debts. Issue final invoices/credit notes, collect receivables and preserve access to Peppol and bank records. Do not close the bank account while VAT, tax, social regularisation, refunds or customer claims remain.

Ask an accredited enterprise counter to strike the registration and establishment units from CBE. The 2026 state fee is €111.50 per establishment unit; ask for the CBE receipt and check Public Search. File cessation through VAT e604C and all final periodic/special returns, client listing and VAT adjustments on stock/capital goods where required. A published Liantis service price for VAT cessation is €44 excluding VAT, separate from the CBE fee. Tell the social-insurance fund the exact stop date and obtain written closure; later definitive income can still generate a contribution regularisation. Notify the health fund so coverage is based on the next status.

Cancel or transfer professional card, FASFC/AFSCA, municipal/environment, professional-register, Unisono, insurance, payment terminal, telecom, software and data-processing arrangements. If registered as employer, complete payroll, Dimona/NSSO and documents. Keep liability cover for claims-made risks where needed. Inform clients how to exercise warranties or retrieve data and honour consumer obligations after closure.

Tax and records after closure

Prepare a closing inventory of cash, receivables, debts, stock, equipment and private withdrawals or sales. Disposing of business assets can create VAT and taxable gains. Submit the final personal income-tax return including professional income and advance payments. Keep invoices, structured Peppol files, books, contracts, bank statements, tax/social decisions, personnel and asset evidence for their statutory retention periods - often ten years for tax/VAT material and potentially longer for property. Export data before subscriptions end and keep readable backups.

A company does not close through the sole-trader steps alone. A BV/SRL needs formal dissolution/liquidation or bankruptcy procedure, corporate resolutions and sometimes a notarial deed, creditor handling, final accounts/tax, publications, UBO/CBE/VAT/social/employer closure and distribution rules. Directors should obtain accountant/notary advice before transferring assets or cash. If the business cannot pay debts as they fall due and has lost credit, seek insolvency advice immediately; silently striking CBE does not eliminate debt.

After every change or stop, collect proof from CBE, VAT, social fund, permits, insurer and bank and set reminders for remaining returns and regularisations. Closure is complete only when each register is closed and future obligations are calendared, not when the last customer invoice is sent.