It is one of the most frequently asked — and most poorly settled — questions among Belgian company directors: should I invest surplus cash through my company, or pay it out to invest it privately? Since 2026 and the entry into force of the capital gains tax, the answer has changed. Not in one direction, but in both, depending on your horizon and your need for liquidity.
Investing through the company mobilises a larger pre-tax capital base and escapes the 10% capital gains tax, which targets only individuals (and certain legal entities under the legal entities tax), not companies subject to corporate income tax. In return, bringing that money back to your private estate triggers a withholding tax — 30% under the standard regime, 18% under VVPRbis, or about 15% total burden via the liquidation reserve. Investing privately avoids this extraction friction, but now exposes your securities gains to the 10% tax. The right trade-off depends on your holding horizon and the date on which you want to recover the funds.
For years, the comparison came down to a game of accounting prestige. The company paid its tax, the director took out a dividend, and the capital gain on the private portfolio remained — rare in Europe — fully exempt as long as it fell within the normal management of private wealth. That asymmetry is over. The Arizona reform has closed the Belgian exception on capital gains, and several parameters of cash extraction were tightened in the same movement.
Two tax logics, two moments of taxation
Investing through your company means investing with money that has been taxed only once, under corporate income tax: 25% at the full rate, or 20% on the first bracket of EUR 100,000 of profit for a small company that meets the conditions (including a minimum director's remuneration). The capital at work is therefore higher: for EUR 100 of pre-tax profit, EUR 75 to 80 remains to be invested.
Investing privately first requires the money to have left the company — and therefore to have already borne corporate tax and then the withholding tax. On EUR 100 of profit, after corporate tax at 25% then a 30% withholding tax on the dividend, only about EUR 52.5 remains to be invested privately. The starting capital is markedly lower, but the future return is no longer caught in the mechanics of extraction.
The whole trade-off lies in this tension: the company preserves capital on the way in but taxes the way out; the private route taxes the way in heavily but frees the way out. The question is therefore not "which is taxed less", but "when will I need this money, and how long will it grow before then".
Investing privately: the new picture after Arizona
Since 1 January 2026, the capital gains realised by an individual on financial assets — listed or unlisted shares, funds, ETFs, bonds, derivatives — are subject to a 10% tax. An annual exemption of EUR 10,000 applies, increased by EUR 1,000 per year without a disposal, up to a ceiling of EUR 15,000. Substantial holdings (a stake of at least 20%) fall under specific rules, and a sale to a company one controls may be taxed at 33%.
In practice, the private portfolio is no longer the "tax-neutral" envelope it used to be. An investor who regularly realises gains will see their net return shaved by 10% above the exempt threshold. For a short horizon or an active rotation strategy, that weighs. For a "buy and hold" investor who almost never realises, the impact remains theoretical as long as they do not sell.
The capital gains tax hits realisation, not holding. But it sits on top of an already disadvantaged starting point: the money invested privately has already borne corporate tax and withholding tax. Comparing a "private" return to a "company" return without accounting for that reduced initial capital systematically distorts the analysis.
Investing through the company: the advantage of pre-tax capital
The company's main strength is mechanical: it invests with capital that has gone through only one layer of tax. And crucially, the capital gains the company realises on its investments do not fall within the scope of the new 10% tax: that tax concerns only individuals and certain legal entities subject to the legal entities tax (foundations, some non-profits). Companies subject to corporate income tax fall under their own regime for the taxation of capital gains, distinct from the Arizona tax.
For a director who does not need this money immediately and wants to let it grow over the long term, the company acts as a capitalisation envelope: higher starting capital, gains outside the scope of the individual tax, compounding over time. That is the structural argument in favour of investing "internally".
The trap is to stop there. Because that money, as long as it stays in the company, is not in your personal estate. The day you want to take it out — to live on, to pass on, or to reinvest privately — the second layer of tax awaits you.
The tax friction of extraction
This is where the real comparison plays out. Taking cash out of a company into the private estate costs, depending on the channel chosen:
| Extraction channel | Rate / burden | Key conditions |
|---|---|---|
| Ordinary dividend | Withholding tax 30% | No specific condition |
| VVPRbis dividend | Reduced withholding tax 18% (2026 programme law, up from 15%) | SME company, registered shares subscribed in cash, holding period |
| Liquidation reserve | ≈ 15% total burden (reserves from 2026: 6.5% withholding after min. 3 years) | Separate levy on creation; early distribution taxed at 30% |
| Remuneration | Progressive personal income tax (up to 50%) + social contributions | Deductible under corporate tax; useful to reach the minimum remuneration threshold |
In other words, capital invested through the company enjoys a better starting point and gains outside the Arizona tax, but on the way out it suffers a levy that cancels part of that advantage. The longer the horizon and the higher the compounded return, the more the company keeps its edge despite the extraction. The shorter the horizon or the more immediate the liquidity need, the more private investing — despite the 10% tax — can become competitive again.
Comparing the corporate tax rate (20-25%) to the top marginal personal income tax rate (up to 50%) and concluding "the company always wins". That is false: as long as the money stays in the company, it is not yours. The honest comparison pits the net return after extraction on the company side (corporate tax + withholding) against the net return after capital gains tax on the private side. The two curves cross — and the crossing point depends on your horizon.
How to decide: three questions before you choose
The first: when will you want to recover this money? If the answer is "never really, it is long-term savings", the company keeps its advantage. If it is "in two or three years, for a private project", the extraction friction weighs heavily and the private investment deserves to be recalculated.
The second: what is your realisation profile? An investor who turns over their portfolio triggers the 10% tax regularly when private; they benefit from the company logic. A patient investor who rarely realises largely neutralises that tax.
The third, often forgotten: not all your assets are financial assets. The 10% tax targets financial instruments. Tangible movable property such as works of art are, by their nature, outside its scope. For a director seeking to diversify beyond the securities portfolio alone, this characteristic changes the wealth equation.
There is no universally winning structure — there is a structure consistent with your horizon, your liquidity needs and the nature of your assets. Most directors benefit from thinking in envelopes: a company pocket for long-term capital, a private pocket for what must stay accessible, and genuine diversification beyond classic financial assets.
This article sets out general mechanisms; it does not replace an analysis of your situation by your accountant or tax adviser. The first confidential meeting serves precisely to ask these three questions about your case — not to sell a ready-made solution.