Calculator · 2026 and 2027 rates
Self-employed tax calculator (Ireland)
Income tax, USC and PRSI for a sole trader. Compare 2026 with 2027. An estimate, not a tax return.
Profit is what the business earns after allowable expenses and capital allowances.
Where your profit goes
| 2026 | 2027 | Change |
|---|
Amounts are per month.
What changed in Budget 2027 for sole traders
From 1 January 2027 a single person pays 20% on the first €46,500 (up €2,500). The personal and earned income tax credits each rise €125 to €2,125. The 2% USC band runs to €30,300. Income tax and USC rates do not change. Class S PRSI is due to rise to 4.5% on 1 October 2027 under the PRSI Roadmap. The Budget 2027 changes still need to pass into law.
The rates this calculator uses
| 2026 | 2027 (Budget 2027) | |
|---|---|---|
| Income tax, single person | 20% on the first €44,000, 40% above | 20% on the first €46,500, 40% above |
| Personal tax credit | €2,000 | €2,125 |
| Earned income tax credit | Lower of €2,000 or 20% of earned income | Lower of €2,125 or 20% of earned income |
| USC bands | 0.5% to €12,012, 2% to €28,700, 3% to €70,044, 8% above | 0.5% to €12,012, 2% to €30,300, 3% to €70,044, 8% above |
| USC | None if income is €13,000 or less. Extra 3% on self-employed income above €100,000 | Same |
| PRSI Class S | 4.2% to 30 Sep, 4.35% from 1 Oct. Revenue uses a blended 4.2375% for the year | PRSI Roadmap (not a Budget 2027 change): 4.35% to 30 Sep, 4.5% from 1 Oct. Blended 4.3875% for the year |
| PRSI limits | None under €5,000. Minimum €650 from €5,000 | Same |
Self-employed tax explained
How it works
On your profit you pay three things: income tax, USC and PRSI Class S. Instead of the employee (PAYE) credit, you get the earned income tax credit, which is the lower of the maximum credit or 20% of your earned income. Your personal tax credit applies as normal.
An example
On a profit of €50,000 in 2027 you pay about €6,450 income tax, €1,017 USC and €2,194 PRSI. That leaves about €40,339 a year, or €3,362 a month. In 2026 the same profit leaves about €39,648.
Good to know
Class S PRSI has a minimum of €650 from €5,000 of income, so the minimum applies to profits up to about €15,000. Your return is due on or before 31 October each year. Put money aside as you earn, because tax is paid after the year, not through payroll.
Questions
Who is this calculator for?
A sole trader on self-assessment who is single, has no other income and is under 66. It uses the personal tax credit and the earned income tax credit.
What is "profit"?
Your income from the business after allowable expenses, and after capital allowances. Revenue calculates Class S PRSI on gross income once capital allowances have been deducted.
What does it leave out?
Pension contributions, a spouse or civil partner, other jobs, rental income, VAT, preliminary tax, medical card and over-70 USC rates, and tax credits other than the personal and earned income credits. If you also have a PAYE job, you pay Class S on the self-employed income as well as Class A on your pay, and different credit rules apply.
Is the 2027 PRSI figure certain?
It is not a Budget 2027 change. It comes from gov.ie's PRSI Roadmap, which adds 0.15 percentage points to all PRSI classes in October 2027 and takes Class S from 4.35% to 4.5%. The 2027 income tax, credit and USC changes are Budget 2027 announcements that still need to pass into law.
Why is there a step at €5,000?
Revenue says you must pay Class S PRSI if your income is €5,000 or more, with a minimum payment of €650. Below €5,000 you are exempt, though you can pay €650 as a voluntary contributor if you meet the other conditions.
When is my tax return due?
Citizens Information says to submit your return on or before 31 October each year, with a slightly later date if you pay and file online in ROS.
Figures checked against official pages (Revenue: calculating USC, Revenue: other USC rates, Revenue: earned income credit, Revenue: PRSI for the self-employed, Revenue: rates, bands and credits, Citizens Information: Class S PRSI, Citizens Information: Budget 2027, gov.ie: PRSI Roadmap), last checked 25 October 2026. This is a general estimate, not tax advice. Your return, Revenue or your accountant has the final say.