Mason Hayes & Curran

What Mason Hayes & Curran does

Mason Hayes & Curran is an Irish business law firm headquartered in Dublin, founded in 1970, providing specialist legal services across transactional, corporate, and financial services areas. The firm employs 670 people across offices in Dublin, London, New York, and San Francisco, serving enterprise clients with Irish business interests — primarily financial services firms requiring regulatory compliance and energy/data-centre operators navigating policy uncertainty. Managing partner Will Carmody leads the firm, with specialist partners such as Keith Newman anchoring the energy regulation practice.

The firm's core offerings are professional legal services rather than technology products — it has no disclosed software platform, API, or application, and operates on a quote-based fee structure tailored to client and matter complexity. MHC differentiates through deep sector expertise and proprietary thought leadership, including annual surveys of 330+ financial services professionals and an annual Dublin energy conference attracting 250+ policymakers and industry leaders. This research positions the firm as an authority on regulatory developments such as the Central Bank's revised Consumer Protection Code (effective March 2026) and data-centre regulatory policy.

MHC's revenue model is professional services fees, with FY2025 turnover of €131.5 million, representing 8% year-over-year growth and approximately one-third cumulative growth since 2021. The go-to-market motion is sales-led and partner-driven, relying on direct client relationships rather than channel or self-serve distribution. The firm is privately held with no disclosed parent company, external investment, or institutional ownership structure, consistent with traditional Irish partnership-based law firm models. Forward management guidance points to 7-8% revenue growth in 2026, supported by planned trainee intake expansion and selection of a new Dublin headquarters.

Name

Mason Hayes & Curran

Legal name

Mason Hayes & Curran

Website

https://mhc.ie

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

251–500 employees

Short description

Mason Hayes & Curran is an Irish business law firm with 670 staff across Dublin, London, New York, and San Francisco, providing specialist corporate, transactional, and financial services legal advice to enterprise clients, with deep regulatory expertise in financial services and energy/data-centre sectors.

Ownership category

akta.pro rank

Product category

Business Legal Services

NAICS

Offices of Lawyers (541110), Legal Services (5411), Offices of Lawyers (54111)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Mergers & Acquisitions (M&A) & Securities Law (BPAHAAAI)

akta.pro secondary industries

M&A Advisory (Buy-side/Sell-side) (BPAHADAC), Accounting & Bookkeeping Services (BPAHABAC)

Keywords

• Business legal services
• Corporate law advisory
• Financial services compliance
• Energy regulation law
• Transactional legal advisory

Headquarters

HQ city

Dublin

HQ country

Ireland

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D

Revenue model

1. Legal Services Fees: Professional legal services revenue from specialist advisory work across transactional, corporate, and financial services areas. Revenue increased by 8% to €131.5 million with approximately one-third growth since 2021.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Mason Hayes & Curran is an Irish business law firm providing specialist legal advice across transactional, corporate, and financial services areas. The firm operates from offices in Dublin, London, New York, and San Francisco with 670 professionals, advising domestic and international clients on regulatory compliance, M&A, and sector-specific matters including financial services and energy.

Product overview

Mason Hayes & Curran is an Irish business-law firm providing specialist legal services across transactional, corporate, and financial services areas. The firm serves clients from offices in Dublin, London, New York, and San Francisco with a team of 670 people. As a professional services firm, it does not offer software products or technology platforms.

Differentiator

Problem solved

Functional benefit

Products and services

• Corporate and Transactional Legal Advisory Specialist legal advice across transactional and corporate areas, including M&A and ongoing corporate advisory, delivered from offices in Dublin, London, New York, and San Francisco to enterprise and corporate clients with Irish and international interests.
• Financial Services Regulatory and Compliance Advisory Regulatory and compliance advisory for Irish financial services firms preparing for the Central Bank's revised Consumer Protection Code (effective March 2026), covering digital compliance requirements and consumer protection obligations under the new framework.
• Energy and Data Centre Regulatory Advisory Legal and policy advisory for energy companies and data-centre developers operating in or considering locating in Ireland, addressing regulatory and policy uncertainty, infrastructure capacity, and consumer energy pricing implications. Backed by MHC's annual energy conference convening 250+ policymakers and business leaders.

Quantifiable outcome

• Revenue growth of approximately one-third since 2021
• +1 more outcomes

Segments2 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Arthur Cox: One of Ireland's largest and most established full-service business law firms, headquartered in Dublin with international offices. Directly comparable to MHC in serving Irish corporates, financial institutions, and energy/data centre clients with similar practice mix.
• A&L Goodbody: Top-tier Irish business law firm with deep practices in financial services, corporate, and energy sectors. Direct competitor to MHC for Irish transactional, regulatory, and financial services mandates, with similar Dublin-led platform.
• Matheson: Leading Irish law firm with strong focus on financial services, corporate, and tax. Direct peer competing for the same institutional clients in Dublin, with comparable transatlantic capability and technology-sector expertise.
• William Fry: Major Irish corporate law firm with significant financial services, technology, and energy practices. Direct competitor to MHC across core Dublin-based mandates, with comparable headcount and practice breadth.
• McCann FitzGerald: Established Irish full-service business law firm headquartered in Dublin. Direct peer to MHC with overlapping client base in financial services, corporate, and energy sectors, serving many of the same Irish institutional clients.
• Maples Group: International law firm with significant Irish (Dublin) operations serving financial services, corporate, and funds clients. Direct competitor to MHC for cross-border mandates involving Irish entities, particularly in financial services.

Broad incumbents

• Eversheds Sutherland: Global full-service law firm with established Irish practice. Competes with MHC on multi-jurisdictional corporate and financial services mandates, offering broader geographic reach but less specialization in Irish energy and data centre regulation.
• Dentons: World's largest global law firm with a Dublin office. Competes for cross-border corporate and energy mandates involving Ireland, leveraging global scale that MHC's transatlantic offices cannot fully match.
• Allen & Overy (now A&O Shearman): Magic Circle / global elite law firm with significant Dublin presence serving financial institutions and corporates. Competes with MHC for high-end Irish and cross-border financial services and corporate mandates.
• Clifford Chance: Global Magic Circle law firm with Dublin office serving financial institutions, energy, and infrastructure clients. Competes with MHC for premium Irish and cross-border mandates, particularly in banking, capital markets, and energy.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/MHCLawyers
• Facebookfacebook.com/MHClawyers
• LinkedInlinkedin.com/company/316415

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Mason Hayes & Curran