fbpx
Start for free

What it means to be a one person company or partnership.

Written by: Valesca Wilms

Updated on: August 24, 2026

Reading time: 3 minutes

Logo RB

What is a one-person company?

This is the most common business form among start-ups. You do not need a separate legal entity and therefore act as a natural person. The sole proprietorship is established by one natural person, who has unlimited liability.

This also means that there is no clear separation between your private assets and the assets of your business. If you have debts, creditors can claim all your assets. Your private home is also covered by this liability, although you can make a declaration of non-viability for seizure with a notary, so that your home is kept out of harm's way when things go wrong.

How do I set up a one-person company?

Before you can start, you need to complete a number of formalities:

  • Prove your entrepreneurial skills.

  • Open a current account (checking account).

  • Register your business in the Crossroads Bank for Enterprises (CBE).

  • Activate your VAT status.

  • Apply for one or more (additional) licences.

  • Join a social insurance fund.

The advantages and disadvantages of a one-man business

1) Advantages

  • You can make decisions quickly and in a less formal way

  • You decide how much profit to invest in the business

  • You have limited administrative and accounting obligations

2) Disadvantages

  • You have unlimited liability and guarantee the commitments of your business with your personal assets.

  • Working out succession and takeover is more difficult.

  • All income is taxed via personal income tax.

What is a company?

When you set up a company, you create a new legal entity, unlike a sole proprietorship, where you act as a natural person yourself. There is a clear difference between your private assets and those of your business. The founders of a partnership enter into a contract that defines the purpose and activities of the business and aims to give the partners a capital gain.

There are different forms of partnership, each with its own legal framework, advantages and disadvantages.

The advantages and disadvantages of a partnership

1) Advantages

  • A company has its own rights and obligations (legal entity).

  • Some companies have limited liability.

  • The company is taxed through corporate income tax.

  • All agreements between partners are clearly written down.

  • You can work out a proper succession fairly easily before death.

2) Disadvantages

  • There are formal decisions and procedures.

  • You have more legal, administrative and accounting obligations, so more costs.

  • You have to join a social insurance fund and pay an annual company contribution.

  • You cannot simply touch your company's profits for private purposes.

Difference between sole proprietorship or partnership for tax purposes

The profit you make in a sole proprietorship is taxed via your personal income tax: so you do not file a separate tax return for your business. The advantage is that you decide how to spend the profit.

The taxable result of a company is taxed according to the corporation tax system. However, the tax advantage of a company lies not so much in the accompanying lower rates, but in the possibility to strive for an optimal income mix.

The trick is to balance your own income and that of your company in such a way that you pay as little tax as possible. On the other hand, you cannot simply use the profits your company makes for private purposes.

Changing your company form: how do you go about it?

To launch your business, you went to the enterprise counter and maybe the notary. Switching to another business form is done via the same intermediate stations.

From sole proprietorship to company

This is the easiest transition. Your affiliation as a self-employed person simply continues. Just keep in mind that your company must also join a social insurance fund like Xerius.

Step 1: choose your company form

Converting to a company is the same as starting a new company. So the knots to cut are identical. Who do you go into business with? Which company form do you choose? How much start-up capital do you need?

You can find inspiration for your answers on this page about setting up a company. Of course, you can also ask your accountant. This expert can help you with another job: drawing up your financial plan.

Step 2: set up your company

Have you chosen a company form? Draw up your articles of association and knock on the notary's door for incorporation. Are you starting a vof or a comm.v.? Then you don't need to pass by the notary.

Step 3: get your one-person company removed and your company registered

Step 4: adjust your social security contributions to your new situation

Will your private income from the company remain more or less the same as with your sole proprietorship? Then don't touch your social contributions.

Will your income increase? Then it's a good idea to pay more social contributions. You have three excellent reasons to do so:

you avoid regularisations, where you have to pay a pretty penny extra.

you reduce your taxes. After all, higher social contributions are a bigger tax deduction.

voluntary additional payments end up in your annual reserve. That amount is first used when calculating your final contributions.

Good sources:

https://www.liantis.be/en/starting-a-business-belgium-as-a-foreigner

https://economie.fgov.be/en/themes/enterprises/starting-business/steps-starting-business/social-insurance-fund/social-status-self-employed

Ideally you should have registered at a social secretariat like Liantis, Xerius, ... So I would strongly suggest you reach out to them 😊

Valesca Wilms

Author - Valesca Wilms

As content marketing lead at Accountable Belgium, Valesca writes about freelancing, self-employment, and taxes based on her own experience as a freelancer.

Who is Valesca ?

Did you find what you were looking for?

You might also like

Tax brackets Belgium 2026

As a self-employed individual with a sole proprietorship, your income is taxed under the personal in...

Read more

Peppol e-invoicing: is it free of charge?

Starting from 2026, all self-employed individuals will need to send their invoices electronically in...

Read more

The VAT reverse charge: what you need to know as a self-employed professional

The VAT reverse charge is a complicated word for a simple concept. It helps you purchase and sell sm...

Read more

Hear it straight from our users

5.300 reviews

App Store

4.580 reviews

Google Play

484 reviews

Reviews.io

They always answer right away to any question I have, they provide clear answers, and they are very patient even when I struggle to understand. They try to explain in different ways. They are very helpful, responsive and friendly.

Chiara Marradi

Reviews.io 01/05/2026

Everything was great! All my questions were answered quickly and in a friendly manner.

Wenzeslawa Wegener

Reviews.io 04/05/2026

In the world where everyone seems to be out to get small entrepreneurs and overwhelm them with new rules, more taxes and reporting obligations, Accountable often feels like the one steady partner that actually wants you to succeed, providing quick, clear and personalised support. Thank you!

Janina Arsenjeva

Reviews.io 10/04/2026

This is an amazing application with great support on issues. In short as in day I am addicted to it (in a positive way). I myself is from IT project management and the way they have captured the user requirement, it’s phenomenal.

Sumit Tewary

App Store 01/12/2024

UI is great. Feature packed and very easy to use. The team at Accountable were VERY quick to respond and their team of technicians soon had a fix in place. Very happy with the level of service so far. Thumbs up from me!

Dean Osborne

Google 14/06/2023

This program is a lifesaver, and it is always improving. Plus, it has an AI chat feature that is actually useful.

Jeffrey Humble

Google 14/01/2026

The coaching session on tax management was excellent, good material, excellent explanations and very insightful. Combined with the AI I never feel alone with Accountable.

Sergio Barbarino

Reviews.io 23/04/2026

The availability of your team to help and guide people to understand their finances better is what really makes Accountable valuable. While the AI is able to give answers to most basic questions, specific scenarios need counsel from a human which your team performs beautifully.

Sofiya Bogdan Neves

Reviews.io 18/04/2026

Fast and careful answers from Alina. Top service. Thank you.

Anonymous

Reviews.io 15/04/2023

They always answer for questions wherever is via direct e-mail or through app. If they can’t answer fully they will forward you to the right place. Documents were always prepared well and ready to send further to government. Everything is intuitive in the app and easy to sort out even for someone completely green in this field.

Anonymous

Reviews.io 22/03/2026