Tax Planning for Irish Tradespeople Beyond the Year-End Return
Every October, thousands of Irish sole traders get their year-end accounts from their accountant, find out what they owe Revenue, and write a cheque. For many, it’s a number that surprises them, sometimes pleasantly, sometimes not.
That process is tax compliance. It’s important and it’s required. But it’s not tax planning.
Tax planning is the decisions you make throughout the year, not in October, that legally reduce what you owe. The difference between compliance and planning can easily be €3,000–€8,000 per year for a trades business earning €80,000–€120,000 in profit.
Here’s where that money is most commonly left on the table.
The difference between tax compliance and tax planning
Tax compliance is backward-looking. Your accountant looks at what happened last year and calculates what you owe based on those facts.
Tax planning is forward-looking. It involves making decisions in advance that change the facts. You can’t go back and make a pension contribution in January from October. You can’t retroactively change when you bought equipment. The decisions have to happen during the year for them to affect the year’s liability.
This is why the once-a-year accountant model has a built-in limitation for anyone serious about managing their tax bill. By the time you’re reviewing last year’s numbers, most of the options are gone.
Capital allowances: what equipment can you write off?
Capital allowances allow you to write off the cost of business equipment against your taxable income. This is one of the most underused reliefs available to Irish tradespeople.
Plant and machinery, which includes a very wide range of items, qualifies for 12.5% annual capital allowances over 8 years under normal rules. This means a €20,000 piece of equipment generates €2,500 of allowable relief per year.
However, there are also accelerated allowances available in certain categories. Energy-efficient equipment can qualify for 100% first-year allowances under the Accelerated Capital Allowance (ACA) scheme in Ireland. If you’re purchasing qualifying equipment, the entire cost can be written off in year one rather than over 8 years.
Vehicles have their own rules and are subject to a CO2-based system that limits the qualifying cost. The maximum qualifying cost for a car purchased in 2026 varies by emissions category. Your accountant can confirm the exact limit, but broadly speaking, low-emission vehicles qualify for higher relief.
Key practical point: you need to actually spend the money and have the asset in use by 31 December to claim the relief in that tax year. Deciding in November to buy a new piece of equipment and completing the purchase before year-end is a legitimate planning action.
Pension contributions as a tax planning tool for sole traders
This is the most powerful and most underused tax planning tool available to self-employed tradespeople in Ireland, and I’ll be direct about it: if you’re not contributing to a pension as a sole trader, you are almost certainly paying significantly more tax than you need to.
As a self-employed person, pension contributions to a Personal Retirement Savings Account (PRSA) or other approved pension product are tax-deductible at your marginal rate, which for most trades businesses earning above €44,000 means relief at 40%.
In practice: €10,000 in pension contributions costs you €6,000 in after-tax money (because Revenue reimburses 40% in reduced tax liability). That €10,000 then grows in a pension fund, tax-free, until retirement.
The age-related limits on contributions are generous: up to 25% of net relevant earnings in your 40s, rising to 35% in your 50s. These limits are rarely fully used by sole traders.
The important planning point: pension contributions for the 2025 tax year can be made until 31 October 2026 (the filing deadline). You can make the contribution after the year-end but before the filing deadline and still claim it in the prior year. This gives you an opportunity to calculate your exact liability in September or October and make a top-up contribution to reduce it.
Timing your income and expenditure
Revenue taxes you on the profits of your accounting year. The year-end date for most sole traders is 31 December. That means decisions made before or after that date can meaningfully affect which year’s liability a cost falls into.
If you’re planning a significant purchase (tools, equipment, a van) and you’re having a particularly profitable year, completing that purchase before 31 December means the relief falls in the current year rather than next.
If you’re expecting a large invoice payment in late December that isn’t critical to land before year-end, there can be a timing argument for it arriving in early January, deferring the tax liability by 12 months. This is particularly relevant on large stage payments on commercial contracts.
These are real decisions with real consequences. They’re also decisions that need to be made before year-end, not during the filing process.
Home office and vehicle expenses: what you can and can’t claim
The rules on home office expenses are frequently misunderstood.
As a sole trader, you can claim a proportion of your home running costs (heating, electricity, broadband) against the business, based on the proportion of your home used exclusively for business purposes and the time it’s used for business. Revenue guidance suggests calculating this as a fraction of total floor area multiplied by a fraction of total usage time. In practice, most accountants use a flat rate of €10 per day for days worked from home.
Important caveat: Revenue does not look favourably on excessive home office claims from trades businesses where the actual work is done on-site. A €3,000 annual home office claim for a business where all work is on customer premises will attract scrutiny. Be realistic.
Vehicle expenses are more straightforward for trades businesses, because most tradespeople use a dedicated work vehicle. If a van or truck is used 100% for business purposes (not personal travel), all running costs (fuel, insurance, servicing, tax, toll charges) are fully deductible.
Keep mileage records. Not necessarily down to the kilometre, but a reasonable log that shows the vehicle is used for business. Revenue can request this.
When to register for VAT (and when it helps you)
VAT registration is mandatory once your turnover from services exceeds €40,000 per year. For goods, the threshold is €80,000.
What many tradespeople don’t realise is that voluntary registration below the threshold can sometimes be beneficial. If you’re doing significant work for VAT-registered businesses or contractors who can reclaim VAT, charging VAT doesn’t cost them anything, but it allows you to reclaim all the VAT you pay on materials and equipment.
A tradesperson turning over €35,000 in services but spending €15,000 on materials (containing 13.5% or 23% VAT) could reclaim approximately €2,000–€3,000 per year in input VAT through voluntary registration.
Whether this makes sense depends on your customer mix and your cost structure. Worth discussing with an advisor.
Want to pay less tax legally?
Most of the planning decisions that reduce your tax bill have to be made during the year, not in October when it’s too late. Our Fractional CFO for Trades service includes proactive tax planning every month, not just at year-end.
Book a free 30-minute call. We’ll show you what’s available for your specific situation.
Or read next: How to Pay Yourself Properly as a Sole Trader in Ireland