Close Company Surcharge in Ireland: What Owner-Managers Need to Review Before Profits Are Retained

• Funnel stage: Problem-aware and tax-planning.
• Primary reader: Director or shareholder of an Irish owner-managed company retaining rental, investment or professional-service income.
• Primary question: When can retained company income trigger a close-company surcharge?
• Secondary questions: What is a close company? Which income is affected? What is a service company? What is the 18-month distribution window? How are distributions and small balances treated? When is the surcharge reported?
• Search intent: Tax planning, explanation and year-end action.
• Evidence of demand: Revenue's 2026 Corporation Tax analysis reports thousands of close-company and service-company surcharge returns, while current guidance contains separate rules and detailed calculations. No invented search metric is used.
• Existing-result weakness: Short summaries can encourage owners to multiply retained profit by a headline rate. The real calculation distinguishes estate and investment income, service-company trading income, Corporation Tax, distributions, associated companies and reporting periods.
• Unique contribution: A two-track decision table, planning timeline and information request for the accountant.
• Irish primary sources: Revenue close-company surcharge page; Tax and Duty Manuals Part 13-01-01 and Part 13-02-05; Revenue Corporation Tax analysis published in 2026.
• Required practical elements: Applicability test; income table; 18-month timeline; simplified examples; adviser checklist.
• Claims requiring expert review: Close-company definition, income classification, 20% and 15% surcharge rules, trading-company reduction, €2,000 exclusion, associated-company adjustment, distributions, DWT and CT1 timing.
• Internal links in: Salary, bonus or dividend; director's loan account; management accounts; company year-end checklist.
• Internal links out: Corporation Tax responsibilities; choosing an accountant; SME accounting services; enquiry page.
• CTA: Request a close-company surcharge forecast before the distribution window closes.
• SEO title: Close Company Surcharge Ireland: Owner-Manager Guide
• Meta description: Understand Ireland's close-company surcharge on retained investment, rental and service-company income, including the 18-month planning window.
• Suggested slug: `/guides/close-company-surcharge-ireland`
• Excerpt: An Irish owner-manager's guide to close-company surcharge exposure, distribution timing and the records an accountant needs.
• Measurement: Impressions and clicks for close-company and retained-profit questions; engaged reading; year-end planning enquiries.

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# Close Company Surcharge in Ireland: What Owner-Managers Need to Review Before Profits Are Retained

An Irish close company may face an additional Corporation Tax surcharge when certain after-tax estate or investment income remains undistributed. Close service companies can also face a surcharge on part of undistributed trading income. The rules are not a general tax on every euro left in the bank: the company type, income category, allowable calculation and distributions made within the relevant period must all be reviewed.

The practical lesson is to calculate potential exposure early. Waiting until the Corporation Tax return is being finalised can leave little time to assess lawful distributions, cash requirements and personal-tax consequences.

What is a close company?

Revenue's 2026 Corporation Tax analysis describes a close company, broadly, as one controlled by five or fewer participators together with associates, or by participators who are directors. A participator broadly includes a person with a share or interest in the company's capital or income.

Many Irish owner-managed companies may therefore be close companies, but the label alone does not establish that a surcharge is due. The accountant must next identify the type and amount of income and the distributions attributable to the accounting period.

There are two main surcharge tracks

A company can require analysis under more than one close-company provision. Do not decide the result by looking only at its principal trade or the description used on its website.

Estate and investment income

Revenue's public guidance lists rental income, interest and dividend income among the income potentially subject to the surcharge. It states that a 20% surcharge applies to undistributed after-tax estate and investment income, subject to the detailed computation.

The calculation is not simply 20% of gross rent or bank interest. Revenue's guidance refers to:

• the company's estate and investment income;
• the Corporation Tax attributable to that income;
• a 7.5% reduction for a qualifying trading company;
• distributions attributable to the accounting period;
• exclusions and marginal relief;
• restrictions involving associated companies.

Service-company trading income

Revenue says a close service company is liable to a 15% surcharge on one half of its undistributed trading income. Its examples of professional activities include doctors, dentists, architects, solicitors, accountants, actuaries, actors, computer programmers and engineers.

Revenue's guidance also includes a company that provides professional services or exercises an office or employment where the principal part of relevant income derives from those activities.

An owner-managed consultancy should not assume that ordinary trading profits are outside the regime merely because Corporation Tax has already been paid. Equally, a company should not assume it is a service company simply because it provides a service in the ordinary commercial sense.

Why the bank balance is not the calculation

A year-end bank balance can include borrowed money, VAT, PAYE, customer deposits, capital introduced, working capital and receipts belonging to another accounting period. Conversely, a profitable company may have cash tied up in debtors.

The surcharge calculation starts from statutory income categories and adjustments, not from cash at bank. Management accounts remain useful because they help identify rent, interest, professional income, expenses, tax and available cash, but the tax computation must be prepared separately.

The 18-month distribution window

Revenue states that the surcharge on estate and investment income is reduced where the company's income is distributed within 18 months of the end of the accounting period in which it arose. Its manual treats qualifying dividends declared for an accounting period and paid or payable during that period or within 18 months after it as distributions for the computation.

For a company with a 31 December 2026 year-end, the headline 18-month date would fall on 30 June 2028.

The planning process should begin much earlier because a distribution can affect:

• company cash flow;
• distributable reserves and company-law compliance;
• Dividend Withholding Tax;
• the shareholder's Income Tax, USC and PRSI position;
• pension, borrowing and personal cash requirements;
• equality and rights between different share classes.

When is the surcharge reported?

Revenue's public guidance says the surcharge for an accounting period is collected as part of the Corporation Tax liability for the subsequent accounting period and must be reported on the CT1 for that later period.

This timing can confuse owners because the income, distribution window and tax-return reporting may span different periods. The accountant should maintain a schedule showing:

1. the period in which the income arose;
2. the final date for a qualifying distribution;
3. distributions made for that period;
4. the surcharge computation;
5. the later CT1 on which it is reported.

The €2,000 exclusion and associated companies

Revenue says no surcharge arises under the estate-and-investment-income rule where the excess of distributable income over distributions is €2,000 or less. Its manual provides marginal relief just above that level and says the limit is proportionately reduced for a short accounting period. It also says the limit is divided where there are associated companies.

This is a good example of why a group cannot apply the €2,000 figure independently to every company without review.

Simplified illustration: investment income

The following is an educational illustration, not a tax computation.

Assume a trading company has distributable estate and investment income, after the relevant tax and trading-company adjustments, of €30,000. It makes qualifying distributions of €20,000 for that accounting period within the permitted window.

The purpose of the illustration is to show the sequence. The actual calculation may differ significantly.

Simplified illustration: service company

Assume a company has €80,000 of qualifying undistributed trading income after all relevant statutory adjustments. Applying the public headline description alone, one half is €40,000 and 15% of that amount is €6,000.

The illustration should not be used to decide whether to pay a dividend. A distribution may reduce company surcharge exposure while creating personal tax and DWT consequences.

Common misconceptions

“We paid Corporation Tax, so no further company tax can arise”

Close-company surcharge is an additional Corporation Tax charge under separate provisions.

“All retained trading profit is charged at 20%”

The 20% rule concerns qualifying undistributed estate and investment income. The close service-company rule is different.

“If the money stays in the bank, the surcharge automatically applies”

The calculation is based on statutory income and distributions, not merely the bank balance.

“A dividend always removes the problem”

A dividend must be lawful, properly attributed and processed. It can also produce shareholder tax and DWT obligations.

“We can calculate it when filing the CT1”

The return may be too late for sensible planning if the company has not tracked the relevant distribution window and cash requirements.

Information your accountant needs

Provide:

• group and ownership chart;
• directors, shareholders and associates;
• current and prior-year financial statements;
• detailed nominal ledger;
• management accounts;
• rental, deposit-interest and investment-income schedules;
• analysis of professional or service income;
• Corporation Tax computations;
• dividends, resolutions and vouchers;
• DWT filings;
• share classes and rights;
• associated-company details;
• cash-flow forecast;
• amounts required for working capital, tax and debt service.

A practical planning timetable

When an accountant can help

An accountant can determine whether the company is close, classify its income, calculate potential surcharge, track distribution dates and compare company and shareholder consequences. More complex cases may require specialist tax and company-law advice.

Use Find My Accountant to send an enquiry if your company needs a close-company surcharge review. Find My Accountant is an independent enquiry website, not an accountancy practice, and does not provide tax, legal or investment advice. No tax result or adviser availability is guaranteed.

Frequently asked questions

Is every Irish owner-managed company a close company?

Many may satisfy the control tests, but status depends on the statutory definitions, ownership, directors, participators, associates and exceptions.

Does the surcharge apply to ordinary trading profit?

The 20% rule focuses on qualifying estate and investment income. A separate service-company rule can apply to part of qualifying undistributed trading income.

Can a company avoid the surcharge by paying a dividend?

A qualifying distribution within the relevant period may reduce the calculation, but the company must consider distributable reserves, cash, DWT and shareholder tax.

Does the €2,000 exclusion apply to every company in a group?

Revenue's manual says the limit is divided between associated companies and adjusted for short periods.

Is close-company surcharge shown on the same CT1 as the original income?

Revenue says it is collected as part of the Corporation Tax liability for the subsequent accounting period.

Related business guides

• SME accounting support
• Choosing an accountant for a limited company
• Management accounts for an Irish SME
• Company year-end checklist

Sources

• Revenue, “Surcharge on undistributed income”
• Revenue, Tax and Duty Manual Part 13-01-01, “Overview of Close Companies”
• Revenue, Tax and Duty Manual Part 13-02-05, “Surcharge on Certain Undistributed Income of Close Companies”
• Revenue, “Corporation Tax — 2025 payments and 2024 returns”