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If you are self-employed in Ireland, knowing what expenses you can deduct against your income is the single most effective way to reduce your tax bill. This guide covers allowable deductions for 2026, the expenses Revenue will not accept, and worked examples showing the real savings at €40k, €60k, and €80k income levels. All figures reflect current Irish tax rules (income tax, Class S PRSI at 4.1%, and USC up to 8%).
Revenue allows deductions for expenses that are incurred wholly and exclusively for the purpose of your trade. The table below lists the most common categories claimed on Form 11.
| Expense category | Details | Typical claim method |
|---|---|---|
| Home office | Electricity, heating, broadband, phone | €2/day flat rate OR apportion actual bills |
| Mileage / motor expenses | Business travel in own vehicle | €0.4848/km (first 6,437 km), €0.2424/km thereafter |
| Equipment & tools | Laptops, software, machinery, tools | Capital allowances (wear and tear) over 8 years |
| Training & education | Courses directly related to current trade | 100% in year paid (not for new trade) |
| Pension contributions | PRSA or personal pension | Up to age-related % of net relevant earnings |
| Professional subscriptions | Trade bodies, professional registration | 100% in year paid |
| Accountancy fees | Bookkeeping, tax return preparation | 100% in year paid |
| Insurance | Public liability, professional indemnity, van insurance | 100% in year paid |
| Office & admin | Stationery, postage, printing, website hosting | 100% in year paid |
Claiming disallowable expenses is one of the fastest ways to trigger a Revenue audit. These items are never deductible, even if they are genuinely necessary for your work.
| Expense | Why it is not deductible |
|---|---|
| Commuting (home to workplace) | Not considered business travel — it is personal travel to a fixed place of work |
| Client entertainment | Entertainment costs are disallowable for tax purposes regardless of business purpose |
| Clothing (general workwear) | Ordinary clothing is a personal expense; protective/uniform clothing is allowable |
| Fines & penalties | Parking tickets, late-filing penalties, interest on late tax — never deductible |
| Capital assets (bought outright) | You claim capital allowances (depreciation) instead of an upfront deduction |
If you work from home, you can deduct a portion of your household bills. The simplest method is the €2-per-day flat rate — claim €2 for each day you work from home. No receipts needed for utilities, but you should note the days worked. At 220 working days per year, that is €440.
The apportionment method requires more record-keeping but can yield a higher deduction. Keep your actual electricity, heating, broadband, and phone bills, then calculate the business-use percentage. For example, if your home office occupies 12% of the floor area and you work 5 days per week, you might claim 12% of heat & light costs plus 100% of a dedicated business broadband line.
For 2026, Revenue recognises the following motor rates: €0.4848 per km for the first 6,437 km of business travel in a calendar year, and €0.2424 per km thereafter. This covers fuel, insurance, tax, maintenance, and depreciation. If you drive 10,000 km for business in a year, the deduction is (6,437 × €0.4848) + (3,563 × €0.2424) = €3,120 + €864 = €3,984.
Keep a mileage logbook showing: date, start/end points, distance, and business purpose. Revenue may request it during a compliance check.
For self-employed people, a PRSA (Personal Retirement Savings Account) is the most common pension vehicle. Contributions are deducted from your total income on Form 11, reducing your tax at the marginal rate. The age-related limits are:
| Age | Max contribution % | Max at €80k income |
|---|---|---|
| Under 30 | 15% | €12,000 |
| 30–39 | 20% | €16,000 |
| 40–49 | 25% | €20,000 |
| 50–54 | 30% | €24,000 |
| 55–59 | 35% | €28,000 |
| 60+ | 40% | €32,000 |
The earnings cap for pension relief purposes is €115,000 (2024, indexed periodically). If you earn above that, the percentage is calculated on €115,000, not your full income. All contributions are net of tax — you claim the relief on your Form 11.
These examples assume a self-employed individual aged 40–49 (25% pension limit) with the listed business expenses and pension contributions. Tax calculations are approximate and use current Irish income tax rates (20% / 40%), Class S PRSI at 4.1%, and USC at progressive rates up to 8%.
| Item | €40k income | €60k income | €80k income |
|---|---|---|---|
| Gross income | €40,000 | €60,000 | €80,000 |
| Business expenses | –€8,000 | –€12,000 | –€18,000 |
| Pension contribution | –€6,000 | –€12,000 | –€20,000 |
| Taxable income | €26,000 | €36,000 | €42,000 |
| Income tax (approx) | €5,200 | €9,200 | €11,600 |
| Class S PRSI (4.1%) | €1,066 | €1,476 | €1,722 |
| USC (approx) | €1,040 | €2,160 | €3,120 |
| Total tax bill | €7,306 | €12,836 | €16,442 |
Self-employed individuals in Ireland must file a Form 11 return each year via Revenue’s online service (ROS or myAccount). The deadline for paper filing is 31 October following the tax year; for ROS online filing (with a preliminary tax payment on ROS), the deadline extends to mid-November. If you file and pay online via ROS, you also get a longer preliminary tax deadline in the year itself.
Key sections on Form 11 that relate to deductions:
The most common allowable expenses include: home office costs (€2 per day flat rate or apportioned utility bills), mileage at the Revenue rate of €0.4848/km for the first 6,437 km and €0.2424/km thereafter, equipment and tools necessary for trade, training directly related to your current business, professional subscriptions, pension contributions (within age-related limits), books/stationery, accounting fees, insurance, and motor expenses. All expenses must be incurred wholly and exclusively for the purposes of your trade to be deductible.
Non-deductible items include: commuting costs between home and your regular workplace (not considered business mileage), clothing for general wear even if worn for work (unless a uniform or protective gear), entertaining clients (disallowable for tax purposes), fines or penalties, capital expenditure on assets that should be capitalised and depreciated, personal living expenses, and any expense not incurred wholly and exclusively for the trade. You should also separate personal subscriptions (e.g. gym membership) from professional ones.
Revenue permits two methods. (1) The flat-rate method: claim €2 per day without needing detailed bills — suitable if you work from home regularly. (2) The apportionment method: keep your actual electricity, heating, broadband, and phone bills, then claim the portion that reflects the room used and the time spent working. For example, if you use one room of a three-bed house exclusively as an office, you might apportion 10–15% of utility costs. The flat-rate method is simpler and rarely challenged, but the apportionment method may yield a higher deduction if your actual costs are significant.
Revenue Civil Service mileage rates for 2025/2026 are: €0.4848 per km for the first 6,437 km, and €0.2424 per km thereafter. These rates are intended to cover fuel, insurance, wear and tear, and depreciation. You can claim actual motor expenses (fuel, tax, insurance, servicing) apportioned for business vs personal use instead, but the Revenue mileage rate is simpler and commonly used by self-employed individuals filing Form 11. Keep a logbook of business journeys to support your claim.
Self-employed individuals can claim full tax relief on pension contributions up to their age-related percentage limit (e.g. 25% for ages 40–49) of net relevant earnings (capped at €115,000 for 2024). Contributions are deducted from total income on your Form 11, reducing your liability at your marginal rate. For example, a higher-rate taxpayer aged 45 earning €80,000 who contributes €20,000 to a PRSA saves €8,000 in income tax (40%), plus Class S PRSI at 4.1% (€820) and USC at up to 8% (up to €1,600) — a combined saving of approximately €10,420 on that contribution. The pension fund then grows tax-free.
Class S PRSI applies to self-employed people in Ireland. The rate is 4.1% on all income over €5,000 per year. Unlike PAYE workers (who pay Class A at 4% on earnings above a weekly threshold), self-employed workers do not pay the additional 4% employer PRSI. Class S PRSI entitles you to a reduced range of social welfare benefits (e.g. State Pension (Contributory), Widow’s/Widower’s Pension) but does not cover Jobseeker’s Benefit or Illness Benefit. The minimum annual PRSI contribution for self-employed people is €500.
Use our contractor calculator to model your net income after expenses, pension contributions, and all deductions — showing exactly how much tax you can save by claiming the allowances you are entitled to.