What the Revenue’s 2025 Update Means for Partnership Tax

If you run a business in Ireland through a partnership, or are thinking about setting one up, it’s important to understand how Revenue will treat your business for tax purposes. Business owners often view partnerships as easy to start, and in many cases, they arise in family businesses; however, that simplicity hides complex partnership tax rules that can significantly affect cash flow, liability, and long-term planning.

To provide clarity, Revenue issued an updated Tax and Duty Manual Part 43-00-03 guide in 2025. It explains how partnerships are taxed, how profits and losses are allocated, and what happens when partners join or leave. To help you understand what’s included, our experienced tax professionals have extracted the key points so you can see exactly what this update means for your business:

Partnership tax in Ireland – a guide to the Revenue’s 2025 update

In Ireland, partnerships generally fall into three categories:

• General Partnership (GP): The most common form. Profits are shared, but so is unlimited liability. Each partner is personally responsible for the firm’s obligations.
• Limited Partnership (LP): Combines general and limited partners. Limited partners’ liability is capped at their contribution, but they cannot take part in day-to-day management.
• Investment Limited Partnership (ILP): A regulated structure designed mainly for investment funds rather than trading businesses.

While most of the clients we support operate limited companies, we do serve a number of businesses with partnership structures here at AAB.

How partnerships are taxed in Ireland

Partnerships are treated by Revenue as “tax transparent.” In other words, the partnership itself doesn’t pay tax. Instead, the profits (or losses) are worked out as if the business were run by a single person, and then divided among the partners.

Each partner is then taxed on their own share:

• Individuals pay Income Tax.
• Companies pay Corporation Tax.
• The allocation is based on the partnership agreement or is split equally if no agreement is in place. For example, if a partnership earns €150,000 in profit with three equal partners, each is taxed on €50,000.

It’s important to note that partners cannot offset personal expenses against their share of partnership income. The profit calculation must be consistent for all partners and based solely on the partnership’s accounts, just as it would be if one person were running the trade.

Capital allowances and restrictions for limited partners

Just like sole traders, partnerships can claim capital allowances on qualifying business expenditure, for example, machinery, equipment, or improvements to premises. These allowances are claimed in the partnership tax return and then divided among the partners according to the profit-sharing ratio.

For limited partners, however, Revenue applies additional restrictions:

• Capped relief: Loss relief and capital allowance claims cannot exceed the amount the limited partner has invested in the partnership.
• No offset elsewhere: Relief can only be used against profits from that same partnership, not against other income or gains.
• No carry-forward: Unused relief cannot be carried forward separately by the limited partner.

In practice, this means that while general partners can usually access the full benefit of capital allowances, limited partners are restricted to the level of their financial stake. These rules are in place to stop passive investors from using partnership structures purely as a tax shelter.

Capital Gains Tax (CGT) and partnership assets

Partnership assets are usually held collectively, even if they are legally registered in the name of just one or two partners. Revenue makes an important distinction here: while the legal title may rest with certain partners, the beneficial ownership belongs to all partners in proportion to their partnership share.

When a partnership asset is sold or transferred, Capital Gains Tax is applied at the level of each partner, not the partnership itself. This means:

• Each partner is assessed on their share of the gain.
• The partnership does not file a separate CGT return.
• Goodwill and other intangibles (such as brand value) are treated the same way; if transferred between partners or when the partnership ends, each partner is taxed on their proportion.

Example: If a property is sold by a partnership for a gain of €200,000 and there are two equal partners, each is taxed on €100,000 of the gain in their personal return.

This approach ensures that every partner is taxed fairly on their share of the partnership’s growth in value, but it also means that even internal transactions (like one partner buying out another) can create Capital Gains Tax liability if not planned carefully.

Changes in the partnership

Partnerships can change by their nature; people join, people leave, and sometimes the entire membership changes. In this new guidance, Revenue (helpfully) sets out clear rules on how these changes are taxed:

• New partner joins: They are taxed on their share of profits from the date they become a partner.
• Partner leaves: They are taxed on their share of profits up to the date they exit.
• All partners change: If every partner is replaced, the old partnership is treated as having ceased, and a brand-new partnership is considered to have started, even if the business itself continues without interruption.

These rules mean that a simple change in membership can have significant tax consequences. For example, bringing in a new partner mid-year or reorganising ownership could affect how profits are split and assessed.

That’s why timing and clear documentation are critical. Without them, partners risk unexpected liabilities, disputes over profit allocation, or the accidental creation of a “new” partnership in Revenue’s eyes.

Company partners and mixed-member partnerships

Not all partnerships are made up solely of individuals. Companies can also act as partners, and when they do, the tax treatment changes:

• A company’s share of profits is taxed under Corporation Tax, not Income Tax.
• Gains on partnership assets are also subject to Corporation Tax at the company level.

Things become more complex in “mixed partnerships”, where both individuals and companies are partners. Revenue pays close attention to how profits are allocated in these cases. If allocations appear to shift profits artificially towards lower-taxed or exempt partners, anti-avoidance rules will apply.

Filing and compliance obligations

Partnerships have their own set of compliance responsibilities, and getting them right is essential to avoid penalties or Revenue queries/audits.

Each year, the precedent partner (the partner responsible for tax matters) must file a Form 1 (Firms) return. This shows the partnership’s income, expenses, capital allowances, and, most importantly, how profits and losses are shared between the partners.

After that, each partner must file their own personal or corporate tax return, including their share of the partnership results.

In addition, partnerships must:

• Register with Revenue when first established,
• Notify Revenue of any changes in membership, and
• Maintain proper business records to support the partnership’s accounts.

Unlike companies, where compliance is centralised, partnerships rely on all partners working together to meet their obligations. A delay or error by one partner can affect everyone, which is why clear agreements and good record-keeping are critical.

How partnership tax impacts your business

Tax rules aren’t just about compliance; they directly influence how your business grows, how cash flow is managed, and how risk is shared between partners.

• For family-run firms and SMEs: Profit allocation can directly affect day-to-day cash flow and personal tax positions.
• For professional practices: Membership changes or goodwill transfers can create unexpected liabilities if not managed carefully.
• For subsidiaries and international groups: Partnerships offer flexibility, but Revenue will scrutinise allocations.
• For high-net-worth individuals and investors: Limited partnerships can be attractive, but reliefs are capped at the level of investment.

In short, the way your partnership is structured and how changes are handled can be the difference between sustainable growth and costly tax liabilities. With the right advice, partnerships can be an efficient, flexible, and viable choice.

How we help

At AAB, we’ve spent years helping Irish businesses navigate complex tax matters. For us, effective tax management goes beyond compliance; it’s about protecting your business, adding value, and supporting long-term growth.

Our specialists cover every aspect of the tax landscape, including partnership structuring, corporate and personal tax, international tax, property transactions, VAT, succession planning, and Revenue audits.

Need expert support with tax compliance for your Partnership? Get in touch with John Conway or your usual AAB advisor.