Company lists · Data refreshed September 2026

Top 25 Business tax consultants based in Ireland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 104 companies tracked

RevenueBase identified 104 business tax consultants headquartered in Ireland as of September 2026 and tracks 3,017 professional contacts across them, including 1,542 with verified work emails. Dublin is the largest hub.

This list covers business tax consultants 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

104Companies

3,017Contacts tracked

1,542Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest business tax consultants based in Ireland

Ranked by team size

Top 25 of 104 business tax consultants 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 business tax consultants: 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	Grant Thornton Ireland	Indirect evidence	Dublin, IrelandHQ checked Sep 19, 2026	1,001-5,000	2,374 contacts →
	Indirect evidence “In Ireland, Grant Thornton Ireland and Grant Thornton Corporate Finance Limited (and their respective subsidiary/affiliate entities) operate under an alternative practice…” Source: RevenueBase Database · checked Sep 19, 2026
2	Fenero TAX & Accounting Solutions	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	11-50	99 contacts →
	Partial evidence “Fenero are multi-award winning experts in Contracting and Personal Tax Solutions for contractors, freelancers, company owners and solopreneurs.” Source: RevenueBase Database · checked Sep 19, 2026
3	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
4	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
5	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
6	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
7	Nexus Chartered Accounts & TAX Advisors	Indirect evidence	Blackrock, IrelandHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “Our high standards, efficiency and understanding of compliance, ensure true piece of mind.” Source: RevenueBase Database · checked Sep 19, 2026
8	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
9	Mcmahon Auditors Accountants	Strong evidence	Kildare Town, IrelandHQ checked Sep 19, 2026	11-50	13 contacts →
	Strong evidence “McMahon Auditors Accountants is a well-established firm of accountants, tax advisors, and business consultants, proudly serving clients from our offices in Kildare, Naas, and…” Source: RevenueBase Database · checked Sep 19, 2026
10	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
11	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
12	Duignan Carthy O'neill	Indirect evidence	IrelandHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “Duignan Carthy O’Neill has been established for over 50 years and has many years of experience helping businesses and individuals to grow and flourish in Ireland.” Source: RevenueBase Database · checked Sep 19, 2026
13	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
14	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
15	GSW Accountants & TAX Advisors	Indirect evidence	Blessington, IrelandHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “We provide a comprehensive range of professional advisory services and set ourselves apart with a motivated, ambitious and friendly team.” Source: RevenueBase Database · checked Sep 19, 2026
16	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
17	Milne O'dwyer	Strong evidence	Offaly, IrelandHQ checked Sep 19, 2026	11-50	9 contacts →
	Strong evidence “Certified Public Accountants and Registered Tax Consultants.” Source: RevenueBase Database · checked Sep 19, 2026
18	Millview Advisory	Partial evidence	Swords, IrelandHQ checked Sep 19, 2026	1-10	8 contacts →
	Partial evidence “Millview Advisory is a boutique tax and corporate finance advisory firm based in Dublin, Ireland.” Source: RevenueBase Database · checked Sep 19, 2026
19	Fintech PRO	Strong evidence	Dublin, IrelandHQ checked Sep 19, 2026	1-10	8 contacts →
	Strong 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
20	Porter & Co. Chartered Accountants	Strong evidence	Sligo, IrelandHQ checked Sep 19, 2026	11-50	7 contacts →
	Strong evidence “We are an established, dynamic and progressive firm of Chartered Accountants, Business Advisors and Tax Consultants located in Sligo.” Source: RevenueBase Database · checked Sep 19, 2026
21	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
22	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
23	Lane O' Connor Accountants & TAX Consultants	Strong evidence	Clonmel, IrelandHQ checked Sep 19, 2026	1-10	7 contacts →
	Strong 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
24	Fortis Advisory	Indirect evidence	Dublin, IrelandHQ checked Sep 19, 2026	1-10	6 contacts →
	Indirect evidence “At Fortis Advisory we work closely with start-up, SME and corporate clients to provide accounting, taxation and advisory services on an ongoing basis.” Source: RevenueBase Database · checked Sep 19, 2026
25	Dillon Mccarron Accountants	Indirect evidence	Ballina, IrelandHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence “Dillon McCarron Accountants Limited is an accounting, audit, and taxation practice based in Ballina, County Mayo.” 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: business tax consultants. 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 business tax consultants.
Partial evidence: Its own public description names part of business tax consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business tax consultants. 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 104 business tax consultants based in Ireland

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,542 reachable decision-makers.

Free signup · no credit card

View the full list →

Business tax consultants based in Ireland at a glance

As of Sep 19, 2026

51.1%Verified-email coverage

29.0Average contacts per company

1-10Median size (employees)

16.3%Largest-city concentration · Dublin

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

1,001-5,000

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 104 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 business tax consultants, 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 “business tax consultants”. 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 business tax consultants), 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 business tax consultants, 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, 1,542 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 business tax consultants, 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 business tax consultants are there based in Ireland?

RevenueBase identified 104 business tax consultants 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?

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

Which city has the most business tax consultants?

Dublin leads with 17 headquartered companies, followed by Cork (5) and Blackrock (4).

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 1,542 verified decision-maker contacts tracked across these 104 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.

Ready to reach these companies? Verified emails and direct dials for all 104 business tax consultants based in Ireland. Start with a free account, no credit card.

Download this list →

Related lists

Business tax consultants by geography

Browse the directory

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.