How To Reduce Capital Gains Tax On Sale Of Business​

The single most expensive mistake an Irish founder can make at exit is discovering, at the offer stage, that they do not qualify for Entrepreneur Relief. The number on the table is €345,000. The difference between paying capital gains tax at 33% and at 10% on €1.5 million of qualifying gain. The qualifying part is the catch. By the time you have an offer in hand, the structure that determines whether you qualify is already locked in. Shareholding percentage. Director status. Length of involvement. Trading status of the company. None of these can be fixed in the weeks before closing.

Most accountants only raise capital gains tax planning when an offer is already on the table. By then, the planning window has been closed for years.

In Ireland, founders looking at how to reduce capital gains tax on sale of business assets typically end up using one or more of three routes: Revised Entrepreneur Relief (10% rate on the first €1.5 million of qualifying gains for disposals from 1 January 2026, saving up to €345,000), Retirement Relief (for owners aged 55+ in qualifying family transfers or third-party sales), and the Section 626B substantial shareholding exemption when shares are sold via a holding company. 

Whether you qualify for each is determined by decisions made three to five years before the sale, not weeks before closing.

The Moments Founders Discover Their Setup Is Wrong

Most founders learn that their structure does not qualify for the major reliefs in one specific moment. The realisation tends to come late, and rarely from the founder’s own accountant. The most common scenarios:

The Dilution Moment

You closed an investment round. Your shareholding dropped from 8% to 4.6%. Someone, often a more experienced peer or the new investor’s accountant, mentions in passing that you have just disqualified yourself from Entrepreneur Relief. The 5% minimum is hard. There is no marginal relief at 4.6%.

The Role Change Moment

You brought in a CEO. You stepped back from day-to-day running. You scaled your involvement to a few hours a week, or came off the board entirely. Eighteen months later a buyer approaches and you discover that even with your formal title intact, you no longer satisfy the 50% working time test for Entrepreneur Relief. The clock has effectively reset.

The Structure Moment

You set up as a sole trader years ago and never moved to a limited company. The buyer wants to acquire a business via a share purchase, which is the cleaner route for them. The reliefs available to share sales are not available to asset sales out of an unincorporated business. The conversation about restructuring at this stage is not impossible but it is messy and expensive.

The Conversation Moment

Your accountant has been doing year-end accounts and tax returns for years and has never raised exit planning with you. You realise this when a peer mentions what their accountant raised with them three years before they sold. Your peer has the relief locked in. You are starting from scratch.

These rarely arrive on schedule. The first one (the dilution moment) often only registers as a problem when the second or third one is already in motion.

When To Actually Start Planning

Three to five years before sale is the window where every major relief is still in play. One to two years out is workable but constrained. Three to six months out is too late for the high-value structural moves. More useful than a fixed timeline is a list of trigger events that should pull planning forward whether you are thinking about an exit yet or not:

• Any investment round or shareholding change.

• Bringing in a new partner, co-shareholder, or senior hire who takes equity.

• Stepping back operationally or off the board.

• Approaching age 55 (Retirement Relief eligibility opens).

• Sector consolidation, an unsolicited approach, or a peer in your sector going to market.

• Crossing revenue thresholds where an exit valuation becomes plausible (commonly €1M, €2M, €5M).

Any of these is a moment where the relief implications should be modelled before the action is taken, not after.

The Pre-Exit Test: Are You Actually Ready?

Diagnostic questions worth answering honestly today, regardless of whether you have a sale in mind. They map directly to whether the major reliefs would apply if a credible offer arrived in the next 18 months:

• Do you currently hold at least 5% of the ordinary share capital of the trading company AND at least 5% of the rights to profits and assets on a winding up?

• Are you spending at least 50% of your working time in the company in a managerial or technical capacity, and have you done so continuously for at least 3 of the past 5 years?

• Is the company a qualifying trading company, or does it carry significant investment, property, or non-trading activity that would disqualify it from Entrepreneur Relief or the Section 626B exemption?

• If you have a holding company in place, has it held at least 5% of the trading subsidiary for at least 12 months within the last 24?

• Is the trading company genuinely trading, or does it carry significant investment, property or non-trading activity that could break the 626B exemption?

• Are you 55 or over, with at least 10 years as a working director and at least 5 of those as a full-time working director, and have you costed the difference between a family transfer and a third-party sale under Retirement Relief?

• Has your accountant ever raised any of these questions with you, unprompted?

If you cannot answer most of these clearly today, you do not have an exit plan. You have an exit hope. The reliefs that protect €300,000 to €700,000 of your sale proceeds are conditional on facts that have to be true years before you sell, not at the point of sale.

If the test above produced more than two unclear answers, you are at the point where planning conversations should be happening. Book a Finance Fit Call. The rest of this piece walks through the actual reliefs and what proactive planning looks like.

The Three Reliefs That Move The Number

Reducing business capital gains tax in Ireland usually comes down to one or more of these three reliefs.

Three distinct routes, each with their own rules. Most exits use one or two of them. A small number of structures combine all three. The non-negotiable is understanding which of them apply to your situation, and then making sure you qualify.

Revised Entrepreneur Relief (10% rate on first €1.5m)

The single most powerful CGT relief available to scaling Irish founders. Under Section 597AA TCA 1997, qualifying gains on the disposal of business assets are taxed at 10% rather than 33%, up to a lifetime limit of €1.5 million for disposals from 1 January 2026 (the limit was €1 million for disposals before that date). Maximum saving: €345,000.

To qualify, all of the following must be true at the time of disposal:

• You hold at least 5% of the ordinary share capital of the company AND at least 5% of the rights to profits available for distribution and to assets on a winding up. Cap tables with multiple share classes, preference returns or liquidation preferences can satisfy the first test and quietly fail the second.

• You have been a director or employee of the company who is required to spend at least 50% of your working time in the service of the company in a managerial or technical capacity, and you have served in that capacity for a continuous period of at least 3 years in the 5 years immediately before the disposal. A non-executive director, or a founder who has scaled back to a few hours a week, would not satisfy this even with the formal title intact.

• The company is a qualifying trading company, not an investment company, property holding company, or company whose main activity is non-trading.

• You have owned the business assets being disposed of for a continuous period of at least 3 years.

Group nuance: if the company is part of a group, the trading status test applies to the group taken as a whole. The standard is “wholly or mainly” trading, treated in practice as a more-than-50% threshold. One dormant subsidiary is unlikely to fail this test on its own. The risk is cumulative: dormant subs, investment property, related-party loans and accumulated cash can together push a group across the threshold without any single item being the cause. This is the most common structural trap and the easiest to fix early.

If you want a deeper read specifically on Entrepreneur Relief, including the situations where founders most commonly lose access to it, our full guide is here: Entrepreneur Tax Relief In Ireland.

Retirement Relief (for founders aged 55 and over)

Substantially restructured by Budget 2024 with effect from 1 January 2025. Anyone advising you on Retirement Relief should be working from the current rules, not the pre-2025 framework that still appears in older content.

The current position:

• Family transfer, age 55 to 69: full relief on qualifying business assets, subject to a €10 million lifetime cap on the value transferred. The €10 million cap was introduced from 1 January 2025. There was no cap previously in this age band.

• Family transfer, age 70 and over: €3 million cap on qualifying assets transferred. The age threshold for this cap moved from 66 to 70 from 1 January 2025.

• Third-party sale, age 55 to 69: full relief where the sale proceeds do not exceed €750,000. Marginal relief applies above that threshold (CGT capped at half the difference between proceeds and €750,000).

• Third-party sale, age 70 and over: full relief threshold reduces to €500,000.

• 12-year clawback: if a child receives qualifying business assets under Retirement Relief and disposes of them within 12 years for proceeds of €10 million or more, the relief is clawed back. Full abatement applies after 12 years.

Conditions: the business assets must have been owned for at least 10 years; the individual must have been a working director of the company for at least 10 years; AND a full-time working director for at least 5 of those 10 years. “Full-time working director” means required to devote substantially the whole of your time to the company in a managerial or technical capacity. The 5/10 split catches founders who are directors of more than one company, or who scaled their operational involvement back years before the disposal.

One terminology point worth knowing. “Child” for the purposes of section 599 extends beyond direct children. It includes grandchildren in some circumstances, nieces or nephews who have worked full-time in the business for at least 5 years prior to the disposal, and foster children meeting specific conditions. A founder passing the business to a niece who has run it for years should not assume they fall outside the relief.

One important pairing. In a family transfer, Retirement Relief addresses the disposer’s CGT position, but the recipient typically also has a CAT (Capital Acquisitions Tax) liability to consider. Business Relief under section 93 CATCA 2003 can reduce the taxable value of qualifying business assets by up to 90% in the recipient’s hands. Both reliefs need to be modelled in parallel. A family transfer should not be treated as a pure CGT question.

Retirement Relief and Entrepreneur Relief can also interact in some structures, and both are worth modelling rather than assuming one applies and the other does not.

The Holding Company Route (Section 626B Substantial Shareholding Exemption)

If you have ever been told that a holding company can reduce CGT on the eventual sale of your business, the actual mechanism that does this is Section 626B TCA 1997, the substantial shareholding exemption (also referred to as the participation exemption).

Section 626B exempts an Irish resident company from CGT on the disposal of shares in a subsidiary, provided:

• The investor (holding) company has held at least 5% of the ordinary share capital AND at least 5% of the rights to profits available for distribution and to assets on a winding up, for a continuous period of at least 12 months within the 24 months before the disposal.

• The investee company is resident in an EU Member State or in a country with which Ireland has a tax treaty.

• The investee company is carrying on a trade, or the group taken as a whole is wholly or mainly trading.

Effect: full exemption from CGT at the holding company level on the gain from the share sale. Worth being honest about the catch: the proceeds then sit inside the holding company. Getting them out to you personally is a separate exercise (dividend extraction over time, share buyback, MBO of the holding company itself), each with its own tax profile. While the proceeds sit there, the close company surcharge under section 440 TCA can apply at 20% on undistributed investment income. A real cost for founders who let cash sit in the holdco indefinitely without a planned extraction strategy.

Two technical mechanics worth knowing about. First, holding companies are typically inserted into an existing structure via a share-for-share exchange under section 586 TCA 1997, which avoids triggering an immediate CGT charge on the founder. This is the move that needs to happen years in advance, both to satisfy the 12-month section 626B holding period and to avoid the arrangement looking purely tax-driven. Second, the share transfer that creates the holding company can attract stamp duty at 1% under SDCA 1999, unless associated companies relief under section 79 SDCA applies. Worth costing into the structural decision rather than discovering at the legal completion stage.

This structure cannot be retrofitted in the months before a sale. The 12-month minimum holding period is hard. Beyond that, retrofitting structures inside the planning window can fall foul of the General Anti-Avoidance Rule under section 811C TCA. Where there is genuine doubt about an arrangement, a protective notification under section 811D can be made, which limits Revenue’s ability to apply surcharges where the position is later challenged. This is exactly the territory where doing the work years before the sale, for genuine commercial reasons, makes the difference between a clean exemption and a Revenue dispute.

Why You Should Do This Even If You Are Not Sure You Will Sell

Most founders avoid the CGT planning conversation because it feels like committing to an exit. It is not. Planning creates options, not obligations.

Putting a holding company structure in place at year five does not commit you to selling at year eight. Maintaining director status and a 5%+ shareholding does not require you to start a sale process. What planning does is mean that when the conversation arrives (because someone approaches you, because you decide you are ready, because an unsolicited offer lands), your structure is already set up to take advantage of every relief available rather than being expensively retrofitted.

The cost of having the planning done early and not exiting is small. The cost of exiting without the planning done is up to €345,000 on Entrepreneur Relief alone, before counting Retirement Relief or the holding company route.

What Proactive Exit Planning Actually Looks Like

If you have never had an exit planning conversation, this is the substance of what one should cover, not as a single annual event, but as an ongoing review that runs alongside the firm’s other work for you:

• Structural review: shareholding map, director and employment history, trading company status, group structure, identification of any non-trading or investment activity that could disqualify reliefs.

• Trading status audit: where the company carries significant cash, investment, property or related-party balances, can these be ringfenced or restructured before they become a relief problem?

• Holding company evaluation: would a holding company structure benefit your situation, and if so, when does it need to be in place to satisfy Section 626B holding periods?

• Retirement Relief track planning: if you are heading toward 55, what does the ten-year ownership clock and active director requirement look like for your timeline, and how do the post-2025 caps interact with your business value?

• Annual review around structural events: every investment round, role change, partner introduction or significant shareholding move triggers a review of relief impact, before it happens, not after.

None of this is dramatic. It is the kind of work a firm operating at the right tier should be initiating with you. Your role is to confirm the facts. Their role is to identify the gaps.

If you want clarity on how to reduce capital gains tax on sale of business assets before an offer arrives, book a Finance Fit Call with Around Finance.

A focused 30-minute conversation where we look at your current shareholding, structure and director status, identify what would need to change for the major reliefs to apply at the time of sale, and tell you straight where the gaps are. If your current setup is already exit-ready, we will say that too.

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