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Top Accounting Firms in Ireland

25 of 75 accounting firms ranked on evidence in the Q4 2026 edition.

We list 24 accounting firms in Ireland. The order comes from what each firm publishes and what has been verified about it, never from payment — at the top right now: Accountable Chartered Certified Accountants, Accounting Technicians Ireland and BJK Accountants.

Before you shortlist, check

Experience with businesses of your size and sector
Exactly what the fee covers, and what is charged extra
Who does the work — a partner, a qualified accountant or a junior
Professional body membership and indemnity insurance

TrustList ranking

Q4 2026 edition

25 of 75 accounting firms ranked on evidence held on 12 October 2026: client reviews, vetting, awards and facts each business states on its own website, which we read and date. Nobody pays to be placed.

Positions are fixed for the quarter; the next edition is due in January 2027.

How this is ranked About this edition

Flagship ranking · Q4 2026 edition

This page ranks accounting firms in Ireland, from long-established Dublin practices to small bookkeeping and outsourced accounts services. TrustList lists 74 of them, and 15 earned a rank number in the Q4 2026 edition. Among the ranked, two hold a professional accreditation and 13 state a founding date, from the 1940s to the 2010s. Dublin is the most common base, with six of the ranked firms, and the rest are spread across Swords, Cavan, Dundrum, Dún Laoghaire and Rathfarnham.

Places are set by the evidence TrustList held on 5 October 2026: client reviews, vetting, awards and facts each business states on its own website, which we read and dated. Nobody pays to be placed. A listing with nothing checkable is shown but not ranked, and positions are fixed until the January 2027 edition. A business can move up by adding client reviews or verified facts to its free profile.

By TrustList Editorial

All accounting firms 25 ranked SMEs 25 ranked

The SME ranking on this page lists 74 small and medium-sized firms, and 15 of them earned a rank number. No listed business is known to be large, so none is left out. The SME order does not reward age, so newer firms compete on evidence alone. See the SME ranking

Filter by fitbudget, engagement, size and more

The top three

1
Crowleys DFK
- Ireland
- In business 50+ years
- professional accreditation
View profile
2
Leonard & Company
- Rathfarnham, Dublin, Ireland
- Founded 1947
View profile
3
Copsey Murray
- Dublin, Ireland
- Founded 1974
View profile

Crowleys DFK
Accounting · Tax · Cloud · Also in Dublin
Crowleys DFK is a firm of chartered accountants and business advisers with offices in the business districts of Dublin and Cork.
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Why #1: Office in Ireland · In business 50+ years · professional accreditation, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Leonard & Company
Not for Profit · Financial Services · Accounting · Also in Dublin
Leonard & Company is a chartered certified accountancy practice in Rathfarnham, South Dublin, established in 1947.
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Why #2: Based in Rathfarnham, Dublin, Ireland · Founded 1947 · Owner-managed, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Copsey Murray
Accounting · Legal · Also in Dublin
Copsey Murray is a chartered accountancy practice in Dublin city centre that has been in business since 1974.
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Why #3: Based in Dublin, Ireland · Founded 1974, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
HLB Ryan
Accounting · Legal · Also in Basel
HLB Ryan, which presents itself as HLB Ireland, is an advisory and accounting firm based in Dublin.
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Why #4: Based in Dublin, Ireland · Founded 1976, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Lewis & Co. Accountants
Best for: Individuals and small businesses
Tax · Legal · Also in Dublin
Lewis & Co. Accountants is a firm of chartered accountants in Stillorgan, County Dublin.
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Why #5: Based in Stillorgan, Co Dublin · Founded 1982 · Sole trader, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Accounting Advisory Services
Accounting · Tax
Accounting Advisory Services is a practice of Chartered Certified Accountants based in Blackrock, Co. Dublin.
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Why #6: Based in Blackrock, Co. Dublin, Ireland · Founded 1988, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Con Dolan Accountants
Tax · Auditing
Con Dolan Accountants is an accountancy practice in Cavan, Ireland, set up in 1989.
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Why #7: Based in Cavan, Ireland · Founded 1989, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Haydon Chartered Accountants
Best for: Healthcare and pharmacy businesses
Tax · Retail
Haydon Chartered Accountants is an Irish accountancy firm based in Dún Laoghaire, County Dublin. It was established in 1990 and has grown through mergers and organic growth.
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Why #8: Based in Dún Laoghaire, County Dublin, Ireland · Founded 1990, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Kilcoyne & Co Accountants
Financial Services · Accounting · Tax · Also in Dublin
Kilcoyne & Co Accountants is an accountancy firm in the centre of Dublin, with more than 30 years of experience helping small and medium-sized businesses and their owners.
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Why #9 (shared): Based in Dublin, Ireland · In business 30+ years · Owner-managed, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Aardvark Accountancy Services
Accounting Management · Accounting · Tax
Aardvark Accountancy Services is an accounting and tax practice in Dublin, Ireland, trading as Aardvark Accountants.
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Why #9 (shared): Based in Dublin, Ireland · In business 30+ years, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
BKR Accountants
Accounting · Tax · Corporation · Also in Dublin
Dublin firm of certified public accountants offering statutory audits, tax, bookkeeping, payroll and company secretarial services
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Why #9 (shared): Based in Dundrum, Dublin, Ireland · In business 30+ years, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Brophy Francis & Company
Accounting
Brophy Francis & Company, which trades as Francis Brophy & Company, is a chartered accountancy practice in Dublin.
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Why #9 (shared): Based in Dublin, Ireland · In business 30+ years, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Farrell Accounting
Best for: Sole traders and small companies
Accounting · Tax · Budgeting · Also in Dublin
Farrell Accounting is a Dublin accountancy practice that has traded since 1997.
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Why #13: Address in Ireland · Founded 1997 · Owner-managed, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Finn & O’ Sullivan
Web Design · Accounting · Tax · Also in Dublin
Finn & O'Sullivan is a firm of certified public accountants and chartered tax advisers in Dublin.
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Why #14: Based in Dublin, Ireland · Founded 1999, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Gilligan Black Recruitment
Financial Services · Accounting · Partnership
Gilligan Black Recruitment is an Irish recruitment agency working in Dublin, run by Theresa Black and Peter Gilligan.
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Why #15: Based in Dublin, Ireland · In business 22+ years, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
BJK Accountants
Accounting · Tax · Cloud · Also in Dublin, Ireland and Co. Dublin, Ireland
BJK Accountants is a chartered accountancy practice in Dublin that looks after the books, tax and statutory filings of small and medium-sized businesses.
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Why #16 (shared): Based in Dublin, Ireland · In business 20+ years · Sole trader, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Duffy Accountancy and Taxation Services
Duffy Accountancy and Taxation Services, also known as Duffy Taxation, is a tax practice in Ballsbridge, Dublin. It focuses on personal service for small and medium businesses.
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Why #16 (shared): Based in Ballsbridge, Dublin, Ireland · In business 20+ years, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
GBW
GBW, trading as GBW Accountants, is an Irish accountancy practice with offices serving Cork and Wicklow.
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Why #16 (shared): Based in Cork and Wicklow, Ireland · In business 20+ years, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
Accounts Assist
Best for: Small and medium businesses outsourcing
Accounting · Administration · Also in Dublin
Accounts Assist, styled Accountsassist, is an Irish outsourced accountancy and bookkeeping service in Dublin.
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Why #19: Based in Dublin, Ireland · Founded 2007, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
D&M Accountancy Services
Best for: Clients wanting their own language
D&M Accountancy Services is an accounting office in Ireland run for clients who prefer to deal with an accountant in their mother tongue, with offices in Dublin and Cork and…
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Why #20: Based in Dublin and Cork, Ireland · Founded 2008, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Greavy & Co Accountants
Best for: Owner-managers and sole traders
Accounting · Tax · Partners · Also in Dublin
Greavy & Co Accountants is a firm of certified and chartered accountants in Dublin 2, Ireland. It has looked after small and growing Irish businesses since 2011.
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Why #21: Based in Dublin 2, Ireland · Founded 2011 · Team of 13+, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Csi Chartered Accountants
Csi Chartered Accountants is an accounting and advisory practice in Dublin, Ireland, that has operated for over 15 years.
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Why #22: Based in Dublin, Ireland · In business 15+ years, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
In Control Finances
In Control Finances is a bookkeeping and accounting practice run by one experienced finance professional for owners of small and medium companies.
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Why #23 (shared): Based in Dublin, Ireland · Founded 2016, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
HA
https://ameadvisors.ie/
Legal
ameadvisors.ie is an accounting firm in Ireland that supports individuals, the self-employed and small and medium-sized businesses.
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Why #23 (shared): Based in Ireland · In business 10+ years · Owner-managed, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.

The top ten at a glance

As each business states it on its own website, read by TrustList for this edition.

#	Business	Based in	Since	Accreditations	Best for
1	Crowleys DFK	Ireland	50+ yrs	professional accreditation
2	Leonard & Company	Rathfarnham, Dublin, Ireland	1947	None stated
3	Copsey Murray	Dublin, Ireland	1974	None stated
4	HLB Ryan	Dublin, Ireland	1976	None stated
5	Lewis & Co. Accountants	Stillorgan, Co Dublin	1982	None stated	Individuals and small businesses
6	Accounting Advisory Services	Blackrock, Co. Dublin, Ireland	1988	None stated
7	Con Dolan Accountants	Cavan, Ireland	1989	None stated
8	Haydon Chartered Accountants	Dún Laoghaire, County Dublin, Ireland	1990	None stated	Healthcare and pharmacy businesses
=9	Kilcoyne & Co Accountants	Dublin, Ireland	30+ yrs	None stated
=9	Aardvark Accountancy Services	Dublin, Ireland	30+ yrs	None stated

How to choose accounting firms

1. Check the professional body
Irish accountants are usually members of Chartered Accountants Ireland, ACCA, CPA Ireland or the Institute of Incorporated Public Accountants. Ask which body the firm belongs to and confirm it on that body's own register.
2. Ask who can sign audits
Statutory audit work needs a registered auditor. If you need an audit, or an audit exemption report, ask which partner signs it and which body supervises that registration.
3. Be clear about Revenue work
Ask whether the firm files your VAT, payroll and corporation tax returns and deals with Revenue correspondence for you, and what happens if a deadline is missed.
4. Match the firm to your size
A sole-trader practice, a mid-sized firm and a network member suit different jobs. Ask who will do your work day to day and whether they have clients like you.
5. Agree fees in writing
Ask for a written letter of engagement setting out what is covered, whether fees are fixed or hourly, and what extra work such as catch-up filings or queries would cost.
6. Check software and access
Ask which bookkeeping software the firm supports, whether you keep your own login and how your records are returned if you change accountant.

For vendors

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The order is earned on evidence: client reviews, vetting, awards and the facts a business states on its own website, which we read and date. Nobody can pay to move up. Add reviews or verified facts to your free profile to move up at the next edition; there are two ways to stand out now, and each one says what it is.

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How is this ranking worked out?

The order comes from what each firm publishes and what has been verified about it, and never from payment:

Profile completeness: the details a buyer needs to judge a firm — what it does, who it serves, how it prices, who it has worked for
Earned trust: verification, awards and the other checks a firm has actually passed
Client reviews, where they exist: the rating is smoothed, so one five-star review cannot outrank a firm with a hundred good ones, and volume counts with diminishing returns

Client reviews are still rare across this catalogue, so on most lists today the order is set by the first two. A firm near the top is the best-documented and best-verified one we hold, which is not the same claim as the best one to hire. Use the list to build a shortlist, then check the firms yourself.

Sponsored listings are labelled and shown apart from this list. How rankings work

Only firms whose profile names Ireland are counted here, so a firm that lists a town but no country is not yet included.

Where else can I look?

The same list elsewhere: Australia (118) · India (96) · Canada (92).

Every category in Ireland: the Ireland country page.

Top B2B companies in Ireland15 categories ranked, 344 companies

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