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135
Countries use IRIS solutions
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$18 billion
in payroll payments processed annually across the Americas
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50+
Of top 100 US CPA firms are IRIS clients
Decades of innovation. Building what comes next.
1978
Founded for accountants
Accountant David Guest founded the company to make tax compliance easier for fellow accountants. From the start, the software was shaped by how people work.
2001
IRIS payroll division begins
IRIS expands into payroll – a natural progression into another sector where deadlines are tight and accuracy is essential. Changing regulations and growing workforce complexity mean employers need a trusted solution from IRIS.
2004
The first Hg investment
Private equity firm Hg makes its first investment in IRIS – enabling the company to invest in products and scale without losing specialist expertise. It’s a relationship that continues today.
2014
IRIS offers HR solutions
The growing need to connect HR and payroll information prompts IRIS to expand into HR. The move enables more customers to reduce admin and make better workforce decisions.
2019
Entering the US
IRIS expands into North America, bringing its accountancy expertise to a new market while building local knowledge around the needs of US firms.
2025
Making AI practical
IRIS introduces AI-powered anomaly detection, helping accountants spot issues earlier, reduce manual review and move faster while keeping people in control.
Experts in IRIS
We know what matters
From engineers to senior leaders, our people bring first-hand experience of the industries we serve. That understanding helps us build software around real challenges, practical priorities and the work our customers need to get right.
Kathleen Grant
Director, Product Accountancy
A CPA with over 25 years’ product leadership experience, Kathleen combines deep accountancy expertise with technology strategy to create solutions that improve performance, efficiency and long-term growth.
Daniel Grace
Director, International HR Consulting
Daniel leads IRIS’s international HR consulting operation, combining global payroll and compliance expertise with hands-on technical leadership to scale services, embed AI and deliver more for clients.
Eva Mrazikova
Global Head of Product Marketing
An experienced accountant, Eva has now spent 20 years driving product marketing, commercial strategy and technology transformation. She brings strategic vision and hands-on execution to complex, multi-product businesses.
A world of solutions in accountancy, HR and payroll
Utah, USA | Michigan, USA | New York, USA | Atlanta, USA | Burlington (Ontario), Canada | Heathrow Approach, UK | Wigan, UK | Leeds, UK | Manchester, UK | Grimsby, UK | Drogheda, Ireland | Bucharest, Romania | Chennai, India
Find out more
Why IRIS
Discover what drives IRIS – and how we work to make a difference to the way practices, firms and schools operate every day.
Our customers
Find out how we work with your sector, building longstanding partnerships to save you time, collect actionable data, and provide a strong future.
AI innovation
See how we’re applying AI across our software to help reduce manual work, surface useful information and support day-to-day decision making.