Company lists · Data refreshed September 2026

Top 25 Accounting firms for international nonprofits based in Ireland

RevenueBase identified 127 accounting firms for international nonprofits headquartered in Ireland as of September 2026 and tracks 3,596 professional contacts across them, including 1,807 with verified work emails. Dublin is the largest hub.

This list covers accounting firms for international nonprofits 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 14, 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 14, 2026 86% judged on-target in blind review
127Companies
3,596Contacts tracked
1,807Verified emails
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The 25 largest accounting firms for international nonprofits based in Ireland

Ranked by team size
Top 25 of 127 accounting firms for international nonprofits based in Ireland, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to accounting firms for international nonprofits: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceDublin, IrelandHQ checked Sep 14, 20261,001-5,0002,374 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 14, 2026
2Indirect evidenceDublin 2, IrelandHQ checked Sep 14, 202651-200129 contacts →

Indirect evidence

“At Crowleys DFK we believe in creating value for our clients.”

Source: RevenueBase Database · checked Sep 14, 2026
3Indirect evidenceDublin 7, IrelandHQ checked Sep 14, 202611-50112 contacts →

Indirect evidence

“Welcome to FMB Chartered Accountants.”

Source: RevenueBase Database · checked Sep 14, 2026
4Indirect evidenceDublin, IrelandHQ checked Sep 14, 202611-5078 contacts →

Indirect evidence

“OSK have been providing quality and professional business advice to Irish businesses since 1985.”

Source: RevenueBase Database · checked Sep 14, 2026
5Partial evidenceDublin 2, IrelandHQ checked Sep 14, 202651-20074 contacts →

Partial evidence

“Strata Financial provides a full suite of all accounting, auditing, tax, management, and compliance services.”

Source: RevenueBase Database · checked Sep 14, 2026
6Partial evidenceDublin, IrelandHQ checked Sep 14, 202651-20061 contacts →

Partial evidence

“Kinore is a multi-award-winning chartered accountancy firm offering accounting, bookkeeping, payroll, and company secretarial services.”

Source: RevenueBase Database · checked Sep 14, 2026
7Partial evidenceDublin 2, IrelandHQ checked Sep 14, 202611-5045 contacts →

Partial evidence

“Based in Dublin, Walsh O’Brien Harnett is one of Ireland’s top 20 professional advisory firms offering a wide range of accounting, audit, tax, advisory and corporate services.”

Source: RevenueBase Database · checked Sep 14, 2026
8Indirect evidenceDublin 2, IrelandHQ checked Sep 14, 202611-5042 contacts →

Indirect evidence

“Noone Casey is a Dublin based Accountancy & Advisory firm.”

Source: RevenueBase Database · checked Sep 14, 2026
9Strong evidenceSligo, IrelandHQ checked Sep 14, 202651-20041 contacts →

Strong evidence

“Gilroy Gannon brings to its clients a unique partnership - people drawn together from the major international accounting firms, industry and small practice with the common goal of…”

Source: RevenueBase Database · checked Sep 14, 2026
10Indirect evidenceDublin, IrelandHQ checked Sep 14, 202651-20040 contacts →

Indirect evidence

“At Malone & Co, we go beyond the numbers.”

Source: RevenueBase Database · checked Sep 14, 2026
11Partial evidenceDundrum, IrelandHQ checked Sep 14, 202611-5034 contacts →

Partial evidence

“MBSL is a firm of chartered accountants specialising in outsourced accounting.”

Source: RevenueBase Database · checked Sep 14, 2026
12Partial evidenceSandyford, IrelandHQ checked Sep 14, 202611-5021 contacts →

Partial 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 14, 2026
13Indirect evidenceGalway, IrelandHQ checked Sep 14, 202611-5020 contacts →

Indirect evidence

“The goal of DEACY GILLIGAN LTD is to provide quality professional services of the highest standard.”

Source: RevenueBase Database · checked Sep 14, 2026
14Indirect evidenceBlanchardstown, IrelandHQ checked Sep 14, 202611-5018 contacts →

Indirect evidence

“TASC accountants are professionally managed firm, established in 2010 in India and started operations in Ireland in 2014.”

Source: RevenueBase Database · checked Sep 14, 2026
15Indirect evidenceEnnis, IrelandHQ checked Sep 14, 202611-5017 contacts →

Indirect evidence

“AMQ is a multidisciplinary firm of Accountants, Registered Auditors and Business Consultants.”

Source: RevenueBase Database · checked Sep 14, 2026
16Indirect evidenceDublin, IrelandHQ checked Sep 14, 202611-5015 contacts →

Indirect evidence

“MSD Accountants provide insight and expertise that supports our clients’ individual needs.”

Source: RevenueBase Database · checked Sep 14, 2026
17Indirect evidenceBlackrock, IrelandHQ checked Sep 14, 20261-1015 contacts →

Indirect evidence

“Chartered accountants, auditors and tax consultants”

Source: RevenueBase Database · checked Sep 14, 2026
18Indirect evidenceDun Laoghaire, IrelandHQ checked Sep 14, 202611-5014 contacts →

Indirect evidence

“HSOC recognise that to ensure businesses not only successfully achieve but exceed their goals they need a team that is both dedicated and committed to ensuring the realisation of…”

Source: RevenueBase Database · checked Sep 14, 2026
19Partial evidenceCork, IrelandHQ checked Sep 14, 202611-5013 contacts →

Partial evidence

“Hyland Johnson Keane is a full-service accounting, audit and taxation company in Cork catering to all size businesses.”

Source: RevenueBase Database · checked Sep 14, 2026
20Partial evidenceDublin 2, IrelandHQ checked Sep 14, 202611-5012 contacts →

Partial evidence

“HLB Ryan was founded in 1933 and since that time has grown into a leading Accounting practice in the area.”

Source: RevenueBase Database · checked Sep 14, 2026
21Indirect evidenceDundalk, IrelandHQ checked Sep 14, 202611-5012 contacts →

Indirect evidence

“FLC Frank Lynch & Company is a medium sized firm of Chartered Certified Accountants with 2 partners and over 40 staff.”

Source: RevenueBase Database · checked Sep 14, 2026
22Strong evidenceDublin, IrelandHQ checked Sep 14, 202611-5012 contacts →

Strong 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 14, 2026
23Indirect evidenceBallina, IrelandHQ checked Sep 14, 202611-5011 contacts →

Indirect evidence

“Cahill Trautt & Company, Chartered Accountants and Registered Auditors.”

Source: RevenueBase Database · checked Sep 14, 2026
24Indirect evidenceSutton, IrelandHQ checked Sep 14, 202611-5011 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 14, 2026
25Indirect evidenceIrelandHQ checked Sep 14, 202611-5011 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 14, 2026

Showing 25 of 127 accounting firms for international nonprofits based in Ireland

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Accounting firms for international nonprofits based in Ireland at a glance

As of Sep 14, 2026
50.3%Verified-email coverage
28.3Average contacts per company
1-10Median size (employees)
15.7%Largest-city concentration · Dublin
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
64
11-50
53
51-200
8
1,001-5,000
1

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 127 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 accounting firms for international nonprofits, 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 “accounting firms for international nonprofits”. 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 accounting firms for international nonprofits), 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 accounting firms for international nonprofits, 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, 1,807 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 14, 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 accounting firms for international nonprofits, 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 accounting firms for international nonprofits are there based in Ireland?

RevenueBase identified 127 accounting firms for international nonprofits 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 accounting firms for international nonprofits?

Dublin leads with 20 headquartered companies, followed by Galway (7) and Cork (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 1,807 verified decision-maker contacts tracked across these 127 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 14, 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.