Self-employed tax calculator
2026 and 2027 rates
Work out the income tax, USC and Class S PRSI on your profit as a sole trader, and how much preliminary tax to pay.
This is an estimate for general information, based on the rates and rules described on this page. It is not financial, tax or legal advice and does not take account of your full circumstances. Check your own position with Revenue or a qualified tax adviser before making a decision. Terms of use.

Worked example
Single sole trader, €60,000 profit, 2026. Income tax is 20% of the first €44,000 (€8,800) plus 40% of the other €16,000 (€6,400), less the personal credit of €2,000 and the earned income credit of €2,000: €11,200.00.
USC is €1,332.82: 0.5% of €12,012, 2% of €16,688, 3% of €31,300. Class S PRSI is 4.2375% of €60,000: €2,542.50.
Total tax is €15,075.32, an effective rate of 25.1%, leaving €44,924.68 (€3,743.72 a month). Preliminary tax for 2026 is at least €13,567.79 (90%), due by 31 October 2026. In a first year with no preliminary tax paid, the bill on 31 October 2027 is €30,150.64: the 2026 tax plus the same again as preliminary tax for 2027.
How self-employed tax is calculated
Income tax
Your profit (income less allowable expenses and capital allowances) is added to any other income and taxed at 20% up to the standard rate band and 40% above it. In 2026 the band is €44,000 for a single person, €48,000 for a single parent and €53,000 for a married couple, rising by up to €35,000 when both have income. Personal pension contributions come off the income before tax, within age limits.
Tax credits then reduce the tax: the personal credit (€2,000, or €4,000 for a couple) and the earned income credit of €2,000. The earned income credit is limited to 20% of the profit, and if you also have a PAYE job, it and the employee credit together cannot exceed €2,000.
USC
If your income is over €13,000, USC is charged on all of it: 0.5% up to €12,012, 2% up to €28,700, 3% up to €70,044, 8% above €70,044. Self-employed income over €100,000 pays an extra 3%. Pension contributions do not reduce USC.
Class S PRSI
Class S is charged on self-employed income of €5,000 or more, with a minimum of €650 a year. The rate in 2026 is 4.2% from 1 January and 4.35% from 1 October, so the Form 11 uses a blended rate of 4.2375%. There is no PRSI credit or weekly exemption as there is for employees, and no Class S from age 66.
Preliminary tax and the Form 11
Self-assessed tax is paid once a year. By 31 October you file the Form 11 for the year before, pay its balance, and pay preliminary tax for the current year. Preliminary tax has to be at least 90% of this year's tax or 100% of last year's, whichever is lower (105% of the year before last by direct debit). If you file and pay through ROS the deadline is later: 18 November 2026 in 2026.
What is not included
- Rental, investment and foreign income, and tax on capital gains.
- Losses carried forward, the home carer credit and other credits such as medical expenses and rent.
- Reduced USC for medical card holders under 70, the 65 or over income tax exemption, and the 5% property relief surcharge.
- Partnerships, company directors and Class K PRSI on unearned income.
- Where you have a salary, the PAYE figure is an estimate of what payroll deducts, giving all your credits and band to the job.
Sources
Rates last checked 10 October 2026. Every figure is listed on rates and sources.
Figures marked as announced come from Budget 2027 and are not law until the Finance Act 2026 is signed.
- Revenue: tax rates, bands and reliefs
- Budget 2027 Tax Policy Changes Summary
- KPMG Budget 2027 tax rates and credits
- Revenue: USC rates and thresholds
- Revenue: USC reduced rates
- gov.ie: PRSI Class A rates
- gov.ie: PRSI Class S rates
- Revenue: tax relief on pension contributions
- Revenue: Earned Income Tax Credit
- Revenue: other rates of USC (non-PAYE surcharge)
- Revenue: what is preliminary tax
- Revenue eBrief 034/26: ROS pay and file extension
- Revenue Tax and Duty Manual 41A-01-01: chargeable persons