Company lists · Data refreshed September 2026

Top 25 Controller services companies based in Ireland

Name: Controller services companies based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 63 companies tracked

RevenueBase identified 63 controller services companies headquartered in Ireland as of September 2026 and tracks 1,021 professional contacts across them, including 70 with verified work emails. Dublin is the largest hub.

This list covers controller services companies headquartered in Ireland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

63Companies

1,021Contacts tracked

70Verified emails

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The 25 largest controller services companies based in Ireland

Ranked by team size

Top 25 of 63 controller services companies based in Ireland, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to controller services companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	INTAX	Indirect evidence	Sandyford, IrelandHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “Intax is award-winning for the best corporate service accountancy firm -Dublin (2021) and tailor accounting, taxation and corporate services to suit companies of all sizes.” Source: RevenueBase Database · checked Sep 19, 2026
2	Finance Services	Indirect evidence	Co Dublin, IrelandHQ checked Sep 19, 2026	11-50	17 contacts →
	Indirect evidence “Finance Services provides a diverse range of outsourced services to clients across four core aspects of the finance function- Accounting and Bookkeeping, Payroll, Credit Control…” Source: RevenueBase Database · checked Sep 19, 2026
3	Solve Outsource	Indirect evidence	Blanchardstown, IrelandHQ checked Sep 19, 2026	11-50	13 contacts →
	Indirect evidence “Solve Outsource is a specialist accounting service provider.” Source: RevenueBase Database · checked Sep 19, 2026
4	BJK Accountants	Indirect evidence	Dun Laoghaire, IrelandHQ checked Sep 19, 2026	1-10	12 contacts →
	Indirect evidence “BJK ACCOUNTANTS is a progressive and friendly chartered accountant firm offering a professional hands-on service to small and medium sized businesses.” Source: RevenueBase Database · checked Sep 19, 2026
5	BORGO	Indirect evidence	Swords, IrelandHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “Ireland's overall Practice of the Year 2026 and Online Practice of the Year two years running - Irish Accountancy Awards.” Source: RevenueBase Database · checked Sep 19, 2026
6	Around Finance	Indirect evidence	Galway, IrelandHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “Modern accounting, done properly.” Source: RevenueBase Database · checked Sep 19, 2026
7	CHK Partnership	Indirect evidence	Cork, IrelandHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “As one of Cork’s long established accountancy practices we are known for our reliable service and personal touch.” Source: RevenueBase Database · checked Sep 19, 2026
8	Aperio	Indirect evidence	Cork, IrelandHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “Whatever your needs aperio has you covered!” Source: RevenueBase Database · checked Sep 19, 2026
9	Moore & CO Chartered Accounants	Indirect evidence	Dublin 1, IrelandHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “Moore & Co.” Source: RevenueBase Database · checked Sep 19, 2026
10	accountantonline.ie	Indirect evidence	Dublin, IrelandHQ checked Sep 19, 2026	51-200	4 contacts →
	Indirect evidence “Accountant Online is a multi-award-winning chartered accountancy firm offering services in accounting, bookkeeping, payroll and company secretarial.” Source: RevenueBase Database · checked Sep 19, 2026
11	Gary Smyth Associates	Indirect evidence	Dublin, IrelandHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “Founded in 1993 in Dublin, Gary Smyth Associates is a trusted accounting firm specialising in cloud accounting and bookkeeping, business development, and tax compliance.” Source: RevenueBase Database · checked Sep 19, 2026
12	Martone Accounting Limited	Indirect evidence	Dublin, IrelandHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “Martone Accounting Limited is a Dublin-based accounting firm supporting business owners with accounting, tax, and financial insight.” Source: RevenueBase Database · checked Sep 19, 2026
13	Taxability Ireland	Indirect evidence	Fairview, IrelandHQ checked Sep 19, 2026	11-50	2 contacts →
	Indirect evidence “We’re here to help businesses like yours deal with all things accounting, leaving you free to get on with the business of making money.” Source: RevenueBase Database · checked Sep 19, 2026
14	O'connor & Co., Chartered Certified Accountants	Indirect evidence	Cork., IrelandHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence “O’Connor & Co is a Cork-based firm of Chartered Certified Accountants providing accounting, tax and outsourced CFO services to established owner-managed businesses.” Source: RevenueBase Database · checked Sep 19, 2026
15	O'neill & Associates Accountancy Taxation & Compliance	Indirect evidence	Rathfarnham, IrelandHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence “O'Neill & Associates is an SME focused Accounting Firm We’re a young and dynamic team of accountants, tax advisors and compliance professionals that assist Owner-Operators and…” Source: RevenueBase Database · checked Sep 19, 2026
16	J. E. Sinnott Accounting & Finance Limited	Indirect evidence	Enniscorthy, IrelandHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence “http://jesinnott.ie/index.html We are a full service accountancy firm specialising in outsourced financial management.” Source: RevenueBase Database · checked Sep 19, 2026
17	Amba Accountants And TAX Advisors	Indirect evidence	Swords, IrelandHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence “AMBA are the Accountants in Swords for SME Owners.” Source: RevenueBase Database · checked Sep 19, 2026
18	Royal Canal Bookkeeping	Indirect evidence	Kinnegad, IrelandHQ checked Sep 19, 2026	11-50	1 contacts →
	Indirect evidence “Dedicated to the SME sector in managing costs & revenues, financial planning & business growth.” Source: RevenueBase Database · checked Sep 19, 2026
19	Mccarra Connolly	Indirect evidence	Monaghan, IrelandHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “Become the business you want to be with McCarra Connolly, Chartered Certified Accountants, providers of outsourced financial control, accounting and taxation services to SME’s…” Source: RevenueBase Database · checked Sep 19, 2026
20	RLM Finance Solutions	Indirect evidence	Raheny, IrelandHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “RLM Finance Solutions provide the following services for SME businesses nationwide Finance Director Outsourcing Business Start Up Planning Management/Financial Accounting…” Source: RevenueBase Database · checked Sep 19, 2026
21	RTM Financials	Indirect evidence	Galway, IrelandHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “Core services: • Xero accounting software setup, training and review • Bookkeeping & Payroll • Monthly Management Accounts • VAT returns • Financial Storytelling RTM caters to…” Source: RevenueBase Database · checked Sep 19, 2026
22	Easy Accounting	Indirect evidence	Strandhill, IrelandHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “As a business professional, I always understood the evolving need for businesses to run smooth operations through properly kept accounting systems.” Source: RevenueBase Database · checked Sep 19, 2026
23	Dixon O'donoghue	Indirect evidence	Dublin, IrelandHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “Dixon O'Donoghue was established to provide quality bookkeeping and other finance services to SME business owners at an affordable price.” Source: RevenueBase Database · checked Sep 19, 2026
24	Kilkenny Accounting Services	Indirect evidence	Kilkenny, IrelandHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “Kilkenny Accounting Services provides on-site bookkeeping and accounting services for small and medium sized businesses across Kilkenny, Carlow and Wexford.” Source: RevenueBase Database · checked Sep 19, 2026
25	Jefferson Accounting & TAX	Strong evidence	Wicklow, IrelandHQ checked Sep 19, 2026	1-10	1 contacts →
	Strong evidence “We are your business partner, your outsourced financial controller providing you with all data necessary to run your business successfully.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: controller services companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names controller services companies.
Partial evidence: Its own public description names part of controller services companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name controller services companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 63 controller services companies based in Ireland

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Controller services companies based in Ireland at a glance

As of Sep 19, 2026

6.9%Verified-email coverage

16.2Average contacts per company

1-10Median size (employees)

14.3%Largest-city concentration · Dublin

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured worldwide rather than for Ireland, so it is reported there. Company counts and contact totals on this page are exact for Ireland, over 63 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among controller services companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Ireland whose own description of what they do matches “controller services companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names controller services companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among controller services companies, and records with no verified work email. Companies headquartered outside Ireland are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 70 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names controller services companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many controller services companies are there based in Ireland?

RevenueBase identified 63 controller services companies headquartered in Ireland as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

INTAX, headquartered in Ireland, tops this list with the largest team on record.

Which city has the most controller services companies?

Dublin leads with 9 headquartered companies, followed by Cork (4) and Galway (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 70 verified decision-maker contacts tracked across these 63 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.