Company lists · Data refreshed September 2026

Top 25 Tax planning companies based in Ireland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 50 companies tracked

RevenueBase identified 50 tax planning companies headquartered in Ireland as of September 2026 and tracks 218 professional contacts across them, including 111 with verified work emails. Dublin is the largest hub.

This list covers tax planning 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 22, 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 22, 2026 86% judged on-target in blind review

50Companies

218Contacts tracked

111Verified emails

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The 25 largest tax planning companies based in Ireland

Ranked by team size

Top 25 of 50 tax planning companies based in Ireland, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to tax planning 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	HDS	Indirect evidence	Limerick, IrelandHQ checked Sep 22, 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 22, 2026
2	Purcell Mcquillan TAX Partners	Partial evidence	Dublin 4, IrelandHQ checked Sep 22, 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 22, 2026
3	Stephens Cooke & Associates	Indirect evidence	Mullingar, IrelandHQ checked Sep 22, 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 22, 2026
4	Visio Advisory	Indirect evidence	Sutton, IrelandHQ checked Sep 22, 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 22, 2026
5	KTA	Partial evidence	Dublin, IrelandHQ checked Sep 22, 2026	11-50	11 contacts →
	Partial evidence “KTA deliver tax advice to private clients and their families on all taxation matters.” Source: RevenueBase Database · checked Sep 22, 2026
6	Greavy And CO Accountants	Partial evidence	Dublin 2, IrelandHQ checked Sep 22, 2026	11-50	10 contacts →
	Partial evidence “Best Accounting, business and tax services.” Source: RevenueBase Database · checked Sep 22, 2026
7	Warren & Partners, A Xeinadin Company	Partial evidence	Dublin, IrelandHQ checked Sep 22, 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 22, 2026
8	Mcavoy & Associates	Indirect evidence	Cork, IrelandHQ checked Sep 22, 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 22, 2026
9	John O'callaghan LTD	Indirect evidence	Dundalk, IrelandHQ checked Sep 22, 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 22, 2026
10	Opes Wealth Trust	Partial evidence	Dublin, IrelandHQ checked Sep 22, 2026	1-10	7 contacts →
	Partial evidence “Opes Wealth Trust are Registered Tax Consultants and Authorised Advisors.” Source: RevenueBase Database · checked Sep 22, 2026
11	Lane O' Connor Accountants & TAX Consultants	Partial evidence	Clonmel, IrelandHQ checked Sep 22, 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 22, 2026
12	PSC Taxation Services	Partial evidence	Tralee, IrelandHQ checked Sep 22, 2026	1-10	5 contacts →
	Partial evidence “PSC Taxation Services offers tax consultancy services and solutions to a wide range of personal and corporate clients.” Source: RevenueBase Database · checked Sep 22, 2026
13	Nexus Taxation	Partial evidence	Dublin 14, IrelandHQ checked Sep 22, 2026	1-10	4 contacts →
	Partial 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 22, 2026
14	Gerard P. Reynolds & Associates	Indirect evidence	Dublin, IrelandHQ checked Sep 22, 2026	1-10	4 contacts →
	Indirect evidence “Gerard P.” Source: RevenueBase Database · checked Sep 22, 2026
15	Murray Cloney & Associates Limited	Strong evidence	Co Cork, IrelandHQ checked Sep 22, 2026	1-10	4 contacts →
	Strong 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 22, 2026
16	Ndtax Limited	Indirect evidence	Carlow, IrelandHQ checked Sep 22, 2026	1-10	3 contacts →
	Indirect evidence “We at NDTAX are a team of taxation and business advisors.” Source: RevenueBase Database · checked Sep 22, 2026
17	Cacm Accountants	Strong evidence	Cork, IrelandHQ checked Sep 22, 2026	1-10	3 contacts →
	Strong evidence “Established in 2009, CACM specialise in dealing with FDI companies, international clients and tax planning for clients that are based locally, nationally and internationally.” Source: RevenueBase Database · checked Sep 22, 2026
18	Gintax	Partial evidence	Dublin, IrelandHQ checked Sep 22, 2026	1-10	3 contacts →
	Partial evidence “Gintax provides Irish tax advisory services to companies and individuals.” Source: RevenueBase Database · checked Sep 22, 2026
19	Barr Pomeroy	Indirect evidence	Dublin, IrelandHQ checked Sep 22, 2026	11-50	3 contacts →
	Indirect evidence “Taxation advice and accounting and auditing services” Source: RevenueBase Database · checked Sep 22, 2026
20	Byrnewallace TAX Advisors	Partial evidence	Dublin 2, IrelandHQ checked Sep 22, 2026	1-10	3 contacts →
	Partial evidence “ByrneWallace Tax Advisers is comprised of lawyers, chartered accountants and tax advisers, who provide a fully integrated advisory and compliance tax service.” Source: RevenueBase Database · checked Sep 22, 2026
21	Kelly Accountants & Registered Auditors	Indirect evidence	Wicklow, IrelandHQ checked Sep 22, 2026	1-10	3 contacts →
	Indirect evidence “Kelly Accountants offer peace of mind to all our clients by giving them a thorough service and a personal touch while using the latest accountancy technologies.” Source: RevenueBase Database · checked Sep 22, 2026
22	Taxkey	Partial evidence	Athy, IrelandHQ checked Sep 22, 2026	1-10	3 contacts →
	Partial evidence “Taxkey is a specialist tax advisory practice that works closely with accountants, solicitors and legal advisors to deliver strategic and proactive tax advice to businesses and…” Source: RevenueBase Database · checked Sep 22, 2026
23	Lacey Consulting	Partial evidence	Dublin, IrelandHQ checked Sep 22, 2026	1-10	2 contacts →
	Partial evidence “Established in 2007, Lacey Consulting provides independent tax and commercial consulting services to corporate businesses, company directors and entrepreneurs.” Source: RevenueBase Database · checked Sep 22, 2026
24	Professional TAX Advisers	Partial evidence	Dunlaoire, IrelandHQ checked Sep 22, 2026	1-10	2 contacts →
	Partial evidence “We provide tax advice and consultancy services to small/medium sized accountancy firms.” Source: RevenueBase Database · checked Sep 22, 2026
25	Bainbridge TAX Consulting	Partial evidence	Dublin 6, IrelandHQ checked Sep 22, 2026	1-10	1 contacts →
	Partial evidence “Bainbridge Tax Consulting is a firm of AITI Chartered Tax Advisers (CTA).” Source: RevenueBase Database · checked Sep 22, 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: tax planning 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 tax planning companies.
Partial evidence: Its own public description names part of tax planning companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name tax planning 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 50 tax planning companies based in Ireland

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Tax planning companies based in Ireland at a glance

As of Sep 22, 2026

50.9%Verified-email coverage

4.4Average contacts per company

1-10Median size (employees)

16.0%Largest-city concentration · Dublin

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 50 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 tax planning 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 “tax planning 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 tax planning 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 tax planning 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, 111 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 22, 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 tax planning 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 tax planning companies are there based in Ireland?

RevenueBase identified 50 tax planning 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?

HDS, headquartered in Limerick, tops this list with the largest team on record.

Which city has the most tax planning companies?

Dublin leads with 8 headquartered companies, followed by Cork (3) and Athy (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 111 verified decision-maker contacts tracked across these 50 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 22, 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.