Sole Trader or Limited Company? When Incorporating Actually Pays Off

It’s the question every sole trader asks themselves sooner or later once business starts picking up: would I be better off setting up a limited company? There’s a popular idea that a magic revenue threshold exists beyond which “it’s worth it” to incorporate, and that number is usually pegged around €40,000 in profit. The reality is more nuanced: the decision hinges on how the tax burden actually compares, on costs that come with a company and never show up in a quick calculator, and on each person’s personal and professional plans. Let’s break it down.

Personal income tax vs. corporate tax: the comparison that actually matters

As a sole trader, your business profit is taxed under personal income tax, folded into your general tax base alongside your other income, on a progressive scale that at higher levels can approach or exceed 45-47% (combining the national and regional brackets, which vary depending on where you live). The more you earn, the higher the marginal rate applied to your last euro of income.

A limited company, on the other hand, pays corporate tax at a much flatter rate: generally 25%, with reduced rates available for newly created companies or small businesses under certain conditions and tax years. That’s the appeal: if profits are high, paying a flat rate near 25% usually beats a personal tax marginal rate that keeps climbing.

But the comparison doesn’t end there, because money the company earns isn’t automatically yours. If you want to take it out of the business to spend as an individual, you’ll need to draw it as salary (which is taxed again under your personal income tax and triggers Social Security contributions) or as a dividend (taxed under the savings scale, on top of what the company already paid). The real tax saving from incorporating only materializes if part of the profit stays inside the company, reinvested or held as a buffer, rather than being withdrawn in full every year.

The hidden costs of setting up a limited company

This is where a lot of back-of-the-napkin comparisons fall short. A limited company comes with obligations that a sole trader under direct estimation simply doesn’t have, and every one of them costs money and time:

Mandatory double-entry bookkeeping, with official ledgers and annual accounts filed with the Companies Registry every year. A more comprehensive — and therefore pricier — accounting service than what a sole trader on simplified taxation needs. Initial incorporation costs through a notary and the Companies Registry, with all the paperwork that involves. Corporate formalities if there’s more than one shareholder: meetings, minutes, potential management disputes. And an exit barrier: winding up or dissolving a company is a longer, costlier administrative process than deregistering as self-employed. On top of all that, if you’re both director and majority shareholder, you’ll still be paying self-employed Social Security contributions in a way very similar to before, so the savings on contributions tend to be smaller than people assume.

Is there really a number at which it “pays off”?

The well-known threshold of “once you clear €40,000 in profit, it’s worth it” is an oversimplification that ignores decisive variables: how much money you need to withdraw each month to live on, whether you plan to reinvest profits back into the business, whether you’re looking to bring in partners or raise financing, whether limited liability protection for your personal assets matters to you, or whether your business has predictable growth that justifies a more robust structure. Two businesses with identical profit can reach opposite conclusions if one needs every euro to live on while the other can afford to leave most of it inside the company.

As a general rule of thumb, and only as a rough guide: the more profit you can afford to leave inside the company without withdrawing it, the closer you are to the point where incorporating is worth considering. When nearly all the profit ends up in your pocket every month, personal income tax and corporate tax end up looking a lot more alike than the magic number promises, once you factor in the extra costs of running a company.

At Zythos Business we look at each case individually, based on your real numbers and how you actually live, before recommending a change in legal structure: we run the numbers for both scenarios, calculate the true cost of maintaining a company, and support you whether you stay self-employed or decide to incorporate, keeping your accounting and taxes on track from day one.