Compliance & Regulation
Incorpro
28 Jul 2026 · 5 min read
Here is a number that surprises most Irish business owners: the top marginal tax rate for a self-employed sole trader earning over €100,000 is about 55%. For a limited company on the exact same profit, the corporation tax rate is just 12.5%.
This massive tax gap is why a record 26,352 new companies were incorporated in Ireland in 2025. If your business is growing, the question isn't whether incorporation makes sense; it's whether it makes sense for you right now.
If you are generating €100,000 in net profit but only need €60,000 gross salary to cover your personal living costs, the structure you trade under makes a real difference to your tax bill.
As a sole trader, you are taxed on the full €100,000 whether you draw it or not. Once your income passes €70,044 you are into the 52% (approximate) marginal rate, and that rises to 55% (approximate) on anything above €100,000 because of the self-employed USC surcharge. After income tax, PRSI and USC, your take-home on €100,000 works out at approximately €64,500.
As a limited company director, you can pay yourself a €60,000 salary at the usual PAYE rates and leave the remaining €40,000 inside the company. That retained profit is taxed at the 12.5% corporation trading rate, so the company pays about €5,000 on it. A sole trader would pay closer to €20,000 in personal tax on the same €40,000, because it sits right at the top of their marginal rate.
The result is that around €15,000 a year, money that would otherwise go straight out in tax, stays working inside the business instead. Over five years that is roughly €75,000 you can put towards scaling the business, funding a company pension, or building a cash reserve.
One caveat. This is tax deferred, not tax dodged. When you eventually draw that money out of the company it gets taxed again in your own hands, so the real win is the timing, the control, and the freedom it gives you to reinvest or fund a pension, rather than a straight saving.
As for the crossover point, if your net profits are consistently below the €40,000 to €50,000 mark, the extra compliance costs of running a company usually outweigh the benefits. Above that, the case for incorporating gets stronger every year.
If your company provides professional services, there is an extra wrinkle worth knowing about before you decide to leave profits sitting in the company.
Ireland operates what is called a close company surcharge, designed to stop professionals using a company purely as a long-term shelter for income that would otherwise be taxed at personal rates. If your company is a "close" company (broadly, one controlled by five or fewer people, which covers most owner-managed firms) and the main part of its income comes from a profession or professional services, it can fall within these rules. Think accountants, solicitors, architects, engineers, doctors, dentists and consultants.
Here is how it works in practice. If professional profits are left in the company and not paid out as a dividend within 18 months of the year end, a surcharge of 15% applies to half of that undistributed after-tax income. In plain terms, that is an effective cost of around 7.5% on the profits you leave behind, on top of the 12.5% corporation tax you have already paid. There is a small exemption where the undistributed amount is €2,000 or less, with marginal relief just above it.
The upshot is that the "leave it in the company at 12.5%" approach has real limits for professional services firms in particular. It does not undo the case for incorporating, but it does mean retained profits need to be managed rather than simply left to build up. In most cases it is handled by planning your dividends and pension contributions around that 18-month window, which is something we would look at with you as part of your annual review.
As a sole trader, you are the business. If it faces a lawsuit or debt, your personal home, vehicle, and savings are entirely exposed.
A limited company restricts your losses to the amount invested in the company. However, directors should note the standard exceptions where personal liability can still apply:
Stricter corporate regulations are the trade-off for high tax efficiency. Managing a small trading company typically costs €1,500 to €3,500 a year in professional accountancy fees, depending on turnover, VAT and payroll. You can view our ongoing accounting packages to see what's included at each level. Whoever you use, those fees cover:
Compliance is non-negotiable. Missing a Companies Registration Office (CRO) annual return by even a day triggers an immediate €100 penalty, climbing by €3 per day up to a €1,200 cap. Furthermore, for small companies under the "two-strikes rule", a second late filing within five years automatically strips away your audit exemption for the next two years, costing thousands in mandatory audit fees.
Whichever structure you choose, VAT is treated the same way. Once your rolling 12-month turnover passes €42,500 for services or €85,000 for goods, you must register for VAT and start charging it. Incorporating does not change those thresholds, so it is one to keep an eye on as you grow.
Incorporation is likely the right move if two or more of the following statements apply to your business:
This article is general information based on Irish tax rules as at July 2026 and is not advice. Tax treatment depends on your individual circumstances and can change. Please talk to us before acting. Learn how set up a limited company, or you can start your company formation today.
Hi there 👋
How can I help you today?
