By Richie Lennon
A sole trader and a limited company are different ways to own and run a business. As a sole trader, you and the business are legally the same person, and you pay personal tax on its taxable profit. A company is a separate legal entity and pays Corporation Tax on its taxable profits. Taking that money out personally can create another tax liability. Choose the structure around risk, how much cash you need and your plans for the business, rather than comparing two headline tax rates.
The useful question is not simply whether a company pays less tax. It is whether incorporating improves your position after you allow for personal drawings, risk, administration and the cost of running the company.
We look at three things together: risk, tax and control. A structure that looks efficient on a tax calculation can still be wrong if it adds work without helping the business. Equally, keeping things simple can become expensive when a growing business has contracts, employees and liabilities that deserve a different structure.
The main differences
| Question | Sole trader | Limited company |
|---|---|---|
| Who owns the business assets and liabilities? | You personally | The company, subject to the actual agreements and any personal obligations |
| What is taxed? | Your taxable business profit through personal tax | The company’s taxable profit through Corporation Tax; salary, benefits and dividends have their own treatment |
| Does leaving money in the bank postpone personal tax? | Not simply because you leave it in the business | Retaining company profits can defer personal extraction, but company tax still applies |
| Can you sell shares to an investor? | There are no company shares | A company can issue or transfer shares, subject to its constitution and agreements |
| What administration is involved? | Business records, tax registration, returns and any relevant VAT or employer obligations | Those obligations plus company records, CRO filings, director responsibilities and beneficial ownership requirements |
| Are business financial statements publicly filed? | No CRO company accounts solely because you are a sole trader | Companies have public filing obligations; the detail depends on the applicable filing rules |
Neither structure removes the need for reliable bookkeeping. You still need to know your profit, tax position and available cash.
Sole trader tax: profit matters, not drawings
As a sole trader, you pay Income Tax, USC and any applicable PRSI on the relevant taxable income. The business’s taxable profit is calculated after allowable expenses and adjustments. It is not simply the money you transfer to your personal account.
Suppose your taxable trading profit is €50,000 and you take €20,000 from the business for personal spending. Leaving the other €30,000 in the business account does not reduce the taxable trading profit to €20,000. The personal tax calculation still starts with the €50,000 profit, alongside your other income and circumstances.
That is an illustration of the distinction, not an estimate of the tax bill. Personal credits, other income, pension contributions and the applicable rules affect the result.
Revenue explains sole trader tax registration. Registering a business name is a separate matter from registering for tax. A trading name does not create a separate legal entity.
Company tax: 12.5% is not your personal tax rate
The standard Corporation Tax rate on trading income is 12.5%. Non-trading income generally falls under a different rate. Reliefs, adjustments and special rules can change the calculation.
For a straightforward illustration, €100,000 of taxable trading profit charged at 12.5% gives a €12,500 Corporation Tax charge and €87,500 after that tax. This assumes no other relevant adjustments, reliefs or charges.
The €87,500 belongs to the company. It is not €87,500 you can spend personally without considering further tax.
If you take a salary, payroll rules apply. If you receive a dividend, personal tax and Dividend Withholding Tax rules apply. A genuine repayment of money you previously lent to the company is another transaction again. Moving cash does not make these routes interchangeable.
That is why there is no honest universal profit figure at which every sole trader should incorporate. Two owners with the same business profit can need very different amounts personally, have different other income and make different pension decisions.
The calculation needs to show:
- profit before the owner’s remuneration and relevant adjustments;
- cash the owner needs personally;
- salary, pension and any other proposed payments;
- company and personal tax;
- cash left in the company;
- additional annual costs and obligations.
Our guide to taking money from a company explains why the payment route matters. The Corporation Tax rules provide the statutory starting point, rather than the whole personal decision.
Limited liability helps, but it is not a blanket shield
A limited company is a separate legal entity. Shareholders’ liability is generally limited, but that does not mean every risk disappears when you put “Limited” after the business name.
A lender or landlord may ask you to give a personal guarantee. You can have obligations arising from your own conduct or your responsibilities as a director. Insurance, contract terms and good operating controls still matter.
As a sole trader, business debts are your debts. If the business cannot meet them, your personal assets can be exposed, subject to the circumstances and applicable law.
Before choosing the structure, list the risks that could actually hurt the business: customer claims, borrowing, leases, staff, stock commitments or contractual penalties. Ask which sit with you personally under the proposed arrangements. That is more useful than treating limited liability as a slogan.
Control and growth plans can change the answer
If you intend to bring in an investor or another owner, a company gives you shares and a framework for ownership. You still need agreement on voting, dividends, decision-making and what happens if someone leaves.
If you expect to sell the business, the eventual transaction may involve selling assets or shares. Those routes can have different legal and tax consequences. Incorporating today is not a guarantee of a particular relief later.
Some customers, procurement processes or funding arrangements require a company. Establish the actual requirement before assuming a company automatically creates a more professional image. A well-run sole trader business is still a business.
These are reasons to plan the structure before a deal or investment is close, rather than rushing an incorporation to satisfy a deadline.
Pensions need a proper comparison
Both sole traders and company directors can make pension provision. The contribution route and the relief available differ.
Personal pension tax relief is subject to limits, including age-related and earnings rules. Company-funded contributions also have conditions. In particular, the employer PRSA rules changed from 2025: the exemption is subject to a limit linked to the employee’s emoluments. It is no longer sensible to describe every employer PRSA contribution as unlimited or automatically free of BIK.
Compare the appropriate pension arrangements with an adviser, using the remuneration actually planned. Do not incorporate on the strength of a generic “better pensions” claim. Revenue’s pension guidance explains the PRSA rules and their limits.
Administration and cash planning
A company needs annual CRO filings and company records as well as tax compliance. Some companies can use audit exemptions, but eligibility and filing discipline matter. “Small company” does not mean “no paperwork”.
A sole trader usually has fewer company-law obligations, but still needs records, a tax return and payment planning. VAT, employees and the nature of the trade can add obligations under either structure.
Preliminary Income Tax is a payment towards the current year’s liability. When you settle the previous year’s balance, you may also need to pay preliminary tax for the current year. It is not a payment for the next year. Revenue sets out the preliminary tax calculation options.
A company has its own Corporation Tax payment calendar. Your personal obligations do not disappear because the business incorporates. Put the separate liabilities into the cash forecast so the same available cash is not counted twice.
Include annual accountancy, payroll, filing and administrative costs in the comparison. If the proposed saving disappears after those costs, or depends on leaving money in the company that you need for household spending, the plan needs another look.
Moving an existing trade into a company
Registering a company does not automatically move your existing business into it.
Choose a cutover date and identify what transfers: contracts, stock, equipment, debtors, bank arrangements, employees and any intellectual property. Consider the tax consequences of the transfers before doing them. Reliefs are conditional, not an automatic consequence of incorporation.
Customers need the right legal entity on new invoices. The bank account, payment processor and VAT arrangements must match the business actually making the sale. Historic sole trader liabilities and returns still need to be dealt with.
Our company formation guide covers the company setup questions. This comparison helps you decide whether the change makes sense in the first place.
What to ask before deciding
Ask for a comparison based on your business, rather than a rule about turnover or a promise of paying only 12.5% tax.
You should be able to see the personal cash you receive, the cash retained in the business, the total tax and the annual costs under each option. You should also understand which risks remain personal and who will handle the additional administration. Around Finance’s tax accounting service is the relevant starting point for discussing the tax position; any restructuring work needs its own agreed scope.
If you run a growing Irish business turning over €250,000 or more, a Finance Fit Call is a starting point for discussing whether Around Finance is the right fit for your ongoing accounting and planning. Any particular restructuring advice needs an agreed scope.
FAQs
Is a sole trader better than a limited company?
A sole trader can suit a straightforward business with limited risk and no need for shareholders. A company may suit retained profits, ownership changes or particular risk and contract requirements. Compare the full position, including personal cash needs and annual costs.
At what profit should I become a limited company?
There is no universal threshold. The result depends on the profit, how much you take personally, other income, pension plans, risks and extra costs. Ask for a worked comparison using your figures.
Does a limited company mean I pay only 12.5% tax?
No. That is the standard Corporation Tax rate on trading income. Personal salary, benefits and dividends have separate tax treatment, and other types of company income may be taxed differently.
Can I be a sole trader and own a company?
Yes, but they remain distinct. Keep the records, contracts, invoices and tax obligations clear. Transactions between you and the company need the correct treatment.
Can I change from a sole trader to a limited company?
Yes. Plan the transfer and cutover. Incorporation alone does not transfer the trade, its contracts, assets, employees or tax registrations.
Are sole traders taxed on drawings?
The trading tax calculation is based on taxable profit, not simply drawings. Taking less cash personally does not itself reduce the profit taxed.
Does a company protect my house from every business debt?
No. Limited liability does not cancel personal guarantees or liabilities arising in other ways. Check your actual contracts and obligations rather than assuming all personal assets are protected.
