Company lists · Data refreshed September 2026

Top 25 Corporate tax firms based in Ireland

Name: Corporate tax firms based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 74 companies tracked

RevenueBase identified 74 corporate tax firms headquartered in Ireland as of September 2026 and tracks 484 professional contacts across them, including 255 with verified work emails. Dublin is the largest hub.

This list covers corporate tax firms 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

74Companies

484Contacts tracked

255Verified emails

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The 25 largest corporate tax firms based in Ireland

Ranked by team size

Top 25 of 74 corporate tax firms 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 corporate tax firms: 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	Strata Financial	Partial evidence	Dublin 2, IrelandHQ checked Sep 19, 2026	51-200	74 contacts →
	Partial evidence “Strata Financial provides a full suite of all accounting, auditing, tax, management, and compliance services.” Source: RevenueBase Database · checked Sep 19, 2026
2	UHY Farrelly Dawe White Limited	Partial evidence	Dundalk, IrelandHQ checked Sep 19, 2026	51-200	68 contacts →
	Partial evidence “UHY FDW is a leading audit, tax and advisory practice in Ireland, driven to achieve a better future together, for our people, our clients and our communities.” Source: RevenueBase Database · checked Sep 19, 2026
3	Malone & CO	Indirect evidence	Dublin, IrelandHQ checked Sep 19, 2026	51-200	40 contacts →
	Indirect evidence “At Malone & Co, we go beyond the numbers.” Source: RevenueBase Database · checked Sep 19, 2026
4	HDS	Indirect evidence	Limerick, IrelandHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “HDS, founded in 2004, is an established practice of professional advisors with offices at RiverPoint, one of Limerick’s most recognisable and prestigious landmark buildings.” Source: RevenueBase Database · checked Sep 19, 2026
5	Purcell Mcquillan TAX Partners	Partial evidence	Dublin 4, IrelandHQ checked Sep 19, 2026	11-50	20 contacts →
	Partial evidence “Purcell McQuillan Tax Partners is a leading Irish tax advisory firm, established in Dublin in 2001.” Source: RevenueBase Database · checked Sep 19, 2026
6	Stephens Cooke & Associates	Indirect evidence	Mullingar, IrelandHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “At Stephens Cooke & Associates we are committed to providing a comprehensive range of services to ensure that we are not simply a service provider, but a firm that work in…” Source: RevenueBase Database · checked Sep 19, 2026
7	Cusack & CO	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	11-50	12 contacts →
	Partial evidence “Cusack & Co offers both traditional accounting and tax services as well as value added solutions to local and international companies, individuals, self-employed persons and…” Source: RevenueBase Database · checked Sep 19, 2026
8	Visio Advisory	Indirect evidence	Sutton, IrelandHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “We focus on building strong relationships with our personal and business clients by getting to know them, their plans and their aspirations.” Source: RevenueBase Database · checked Sep 19, 2026
9	TRA Professional Services	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	1-10	11 contacts →
	Partial evidence “Assisting small and medium sized enterprises in minimising their tax exposure while maximising their sales, profits, time and overall quality of life.” Source: RevenueBase Database · checked Sep 19, 2026
10	Greavy And CO Accountants	Partial evidence	Dublin 2, IrelandHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “Best Accounting, business and tax services.” Source: RevenueBase Database · checked Sep 19, 2026
11	Warren & Partners, A Xeinadin Company	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	11-50	9 contacts →
	Partial evidence “Warren & Partners are a boutique Irish tax and business advisory firm, providing bespoke tax solutions for domestic and international clients operating in Ireland.” Source: RevenueBase Database · checked Sep 19, 2026
12	Milne O'dwyer	Partial evidence	Offaly, IrelandHQ checked Sep 19, 2026	11-50	9 contacts →
	Partial evidence “Certified Public Accountants and Registered Tax Consultants.” Source: RevenueBase Database · checked Sep 19, 2026
13	Millview Advisory	Strong evidence	Swords, IrelandHQ checked Sep 19, 2026	1-10	8 contacts →
	Strong evidence “Millview Advisory is a boutique tax and corporate finance advisory firm based in Dublin, Ireland.” Source: RevenueBase Database · checked Sep 19, 2026
14	Fintech PRO	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	1-10	8 contacts →
	Partial evidence “Qualified Accountants, Business Advisors, and Management Consultants enabling Businesses Grow by helping them with Accounting and Tax compliance needs.” Source: RevenueBase Database · checked Sep 19, 2026
15	Mcavoy & Associates	Indirect evidence	Cork, IrelandHQ checked Sep 19, 2026	1-10	7 contacts →
	Indirect evidence “McAvoy & Associates is a multi-faceted consulting firm which provides its clients with leading-edge expertise in the fields of taxation, business advice, accounting and financial…” Source: RevenueBase Database · checked Sep 19, 2026
16	John O'callaghan LTD	Indirect evidence	Dundalk, IrelandHQ checked Sep 19, 2026	1-10	7 contacts →
	Indirect evidence “Since our establishment in 1983 we have always believed that our priority is making your business operate as efficiently as possible both from an operational and taxation…” Source: RevenueBase Database · checked Sep 19, 2026
17	Lane O' Connor Accountants & TAX Consultants	Partial evidence	Clonmel, IrelandHQ checked Sep 19, 2026	1-10	7 contacts →
	Partial evidence “At Lane O’ Connor Accountants & Tax Consultants, we guarantee high quality service and dedicated customer care at costs you can afford.” Source: RevenueBase Database · checked Sep 19, 2026
18	Blackthorn Capital	Indirect evidence	Dublin, IrelandHQ checked Sep 19, 2026	1-10	6 contacts →
	Indirect evidence “At Blackthorn Capital we have a value-added approach to serving our clients.” Source: RevenueBase Database · checked Sep 19, 2026
19	John P Burke & CO	Indirect evidence	Lucan, IrelandHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “John P Burke & Co have been successfully offering audit, accounting, taxation advice and wealth planning to clients and businesses.” Source: RevenueBase Database · checked Sep 19, 2026
20	PSC Taxation Services	Strong evidence	Tralee, IrelandHQ checked Sep 19, 2026	1-10	5 contacts →
	Strong evidence “PSC Taxation Services offers tax consultancy services and solutions to a wide range of personal and corporate clients.” Source: RevenueBase Database · checked Sep 19, 2026
21	Gerard P. Reynolds & Associates	Indirect evidence	Dublin, IrelandHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “Gerard P.” Source: RevenueBase Database · checked Sep 19, 2026
22	Nexus Taxation	Strong evidence	Dublin 14, IrelandHQ checked Sep 19, 2026	1-10	4 contacts →
	Strong evidence “Nexus Taxation specialises in providing financial services tax compliance and advisory services to corporate clients and professional services firms alike.” Source: RevenueBase Database · checked Sep 19, 2026
23	Murray Cloney & Associates Limited	Partial evidence	Co Cork, IrelandHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “Accountants for small, medium and large businesses Tax Consultants and tax planning advice Business consultants for existing and start up businesses Farming tax and accounts…” Source: RevenueBase Database · checked Sep 19, 2026
24	Walshgibbons Accountancy And TAX Advisory	Indirect evidence	Drogheda, IrelandHQ checked Sep 19, 2026	11-50	4 contacts →
	Indirect evidence “WalshGibbons is a progressive Accountancy and Taxation Consultancy firm established in 1997.” Source: RevenueBase Database · checked Sep 19, 2026
25	Ndtax Limited	Indirect evidence	Carlow, IrelandHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “We at NDTAX are a team of taxation and business advisors.” 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: corporate tax firms. 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 corporate tax firms.
Partial evidence: Its own public description names part of corporate tax firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name corporate tax firms. 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 74 corporate tax firms based in Ireland

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Corporate tax firms based in Ireland at a glance

As of Sep 19, 2026

52.7%Verified-email coverage

6.5Average contacts per company

1-10Median size (employees)

20.3%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 74 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 corporate tax firms, 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 “corporate tax firms”. 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 corporate tax firms), 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 corporate tax firms, 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, 255 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 corporate tax firms, 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 corporate tax firms are there based in Ireland?

RevenueBase identified 74 corporate tax firms 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?

Strata Financial, headquartered in Dublin, tops this list with the largest team on record.

Which city has the most corporate tax firms?

Dublin leads with 15 headquartered companies, followed by Cork (3) and Ballsbridge (2).

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 255 verified decision-maker contacts tracked across these 74 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.