Self-Employed Tax Calculator Ireland

Self-employed people in Ireland pay Income Tax, USC and PRSI Class S on their net profit. Income Tax is 20% up to approximately €42,000 and 40% above that. USC adds between 0.5% and 8% depending on income level. PRSI Class S is 4% of all income. The combined effective tax rate for a sole trader earning €50,000 net profit typically falls between 35% and 45%, but this varies significantly depending on expenses claimed, personal circumstances and available credits. The only way to know your exact liability is to file a Form 11 with Revenue.

Allowable business expenses that reduce your taxable profit include: vehicle costs (mileage, fuel, insurance, repairs for business use), phone and internet bills (business proportion), tools, equipment and materials, professional fees and subscriptions, insurance, home office costs (rent, utilities — business proportion), accountancy and bookkeeping fees, work clothing where required by the trade, and training directly related to your work. Pension contributions are also deductible and reduce your taxable income at your marginal rate, which can result in very significant tax savings. Revenue requires all expenses to be wholly, exclusively and necessarily incurred for the business.

Because your actual tax liability depends on information this calculator cannot verify: the full list of allowable deductions you can claim, whether your expenses are fully documented, your personal tax credits and circumstances, any pension or investment vehicles you hold, whether you have other income sources, and whether Revenue has applied any adjustments or amendments to previous years. The range shown is based on commonly applied tax bands — it is designed to give you a sense of scale and to help you decide whether professional advice is worthwhile, not to replace an official Revenue calculation.

The Form 11 deadline is 31 October each year (or mid-November if you file and pay online via ROS). If you file late, Revenue automatically applies a surcharge of 5% of your tax due (up to €12,695) if you file within 2 months of the deadline, or 10% (up to €63,485) if you file more than 2 months late. These surcharges are applied automatically — there is no appeal process for being late. Interest also accrues on any unpaid tax from the deadline date. In addition, missing the Preliminary Tax payment by 31 October triggers its own surcharge on your current-year liability.

Yes. Self-employed people in Ireland must pay Preliminary Tax by 31 October each year. Preliminary Tax is an advance payment towards your current year's tax liability. The minimum required is 90% of your current year's liability, OR 100% of last year's liability, OR 105% of the liability from two years ago (direct debit only). Choosing the wrong method or underpaying triggers a surcharge. Many people find it difficult to calculate their Preliminary Tax accurately — especially in the first year of trading, or when income has changed significantly.

For most self-employed people, yes. The Form 11 is a detailed return that covers income from all sources, all allowable expenses, PRSI, USC, Preliminary Tax, capital gains, foreign income and more. Errors or omissions can trigger Revenue audits, surcharges and penalties. An experienced accountant will identify all available deductions, ensure the return is accurate and submitted on time, and can typically save you more than their fee through additional expenses or credits you would not have identified yourself. Our Form 11 service is a fixed fee of €350.