Leyton began as an entrepreneurial adventure — the product of perseverance, boldness, and a belief that every business deserves access to the funding it has earned. Co-founded by François Gouilliard and Olivier de Beauminy, we have grown over 25 years from that founding conviction into an international consulting firm with more than 3,000 employees, 30+ offices across 12+ countries, and over $500 million in tax relief delivered to more than 50,000 clients. In the United States, our teams operate from Boston, MA and San Francisco, CA, bringing global reach with the local precision that complex tax and incentive landscapes demand. We are a NASBA-certified firm and a signatory of the UN Global Compact — commitments that reflect the rigor, accountability, and ambition that have defined us from the start.

We are a multidisciplinary team of over 70 tax and technical experts — accountants, engineers, scientists, PhDs, and attorneys — united by a single mission: to simplify access to complex financial incentives for businesses of every size and sector. What sets the Leyton team apart is the rare combination of deep tax expertise and genuine technical knowledge working side by side. Our people bring an agile, proactive mindset, delivering precise answers to specific challenges while building long-lasting financial leverage for our clients. We are proud to have internally promoted 90% of our leadership team, and our Head of People puts it well: at Leyton, development, innovation, and teamwork are not just values — they are embedded in everything we do. Our proprietary digital platform, REV, powered by Leyton's internal tech lab, brings together artificial intelligence, robotic process automation, and advanced data management so our clients can discover their claim in minutes, not months.

We help businesses unlock millions in funding they have already earned but never claimed. Our consultants partner with finance and executive teams to identify overlooked tax credits, incentives, and funding opportunities — then build the technical and financial case to maximize every dollar. Our services span R&D Tax Credits (federal and state), Payroll R&D Tax Credits for startups, Energy Efficiency Incentives (§45L and §179D), State and Local Tax strategy, Grants and Government Funding, Cost Segregation, the Orphan Drug Tax Credit, VAT Compliance, Custom Duty Drawback, IEEPA Tariff Refunds, Employee Retention Credit Representation, Corporate Finance Advisory, and M&A Advisory Services. We serve more than 65 industries — from software and life sciences to manufacturing, construction, agriculture, food and beverage, hospitality, and energy technology — combining industry expertise with cutting-edge digital tools to deliver strategies tailored to each client's unique business environment.

Our purpose is straightforward and enduring: to empower businesses to grow by ensuring they access every financial incentive available to them. Too many companies invest in innovation, efficiency, and their people without ever reclaiming the credits and funding those efforts have earned. We exist to close that gap — turning complex tax policy into real, reinvestable capital that drives sustainable growth. Innovative companies looking for sustainable growth turn to Leyton to find financing leverage that favors long-lasting performance. With compliance always front of mind, we deliver optimal outcomes while giving our clients the peace of mind that they will always receive the maximum benefit, without taking risks.

Three principles define the Leyton Spirit and guide everything we do. Our people are our greatest asset — equipped with an agile and proactive mindset, they bring precise answers to organizational challenges while delivering long-lasting recommendations and financial leverage. We are driven by a spirit of innovation: our internal tech lab puts AI, robotic process automation, and data management in the hands of our consultants, enabling state-of-the-art service delivery for every client. And we are committed to sustainable development — going beyond consultancy and financial leverage to foster collaborative actions that build a responsible future. These are not aspirational statements. They are the operating principles that have shaped Leyton for 25 years and that we carry into every client engagement, every hire, and every community action.

Choosing Leyton means choosing the firm that sees more, claims more, and stands behind its work. Our combined teams of tax and technical specialists — including accountants, scientists, engineers, and doctors — are uniquely positioned to identify qualifying activities that generalist advisors routinely miss. We ensure you are claiming all relevant credits and receiving your maximum benefit, thanks to our exclusive dual expertise in tax and the sciences. Our proprietary digital platform, REV, accelerates the process so you can discover and submit your claim in minutes. In the unlikely event of an audit, our tax attorneys with 20+ years of experience provide the legal defense you need — and 16 hours of audit support are included as a complimentary part of our service. With 25 years of experience, $500 million in tax relief delivered, and a track record trusted by over 50,000 businesses, we do not just file a claim — we build the comprehensive technical report and supporting documentation that makes it defensible, durable, and maximally valuable.

Sustainability by Leyton is not a program we added — it is at the heart of our DNA. Through our group-wide CSR framework, we coordinate environmental, social, and societal actions by drawing on the expertise of our own employees in technical, energy, and economic transition. As a signatory of the UN Global Compact, we are committed to implementing its 10 universal principles and publishing an annual Communication on Progress across every office worldwide. Our approach is both global in ambition and local in action: teams of volunteer employees in each country implement concrete environmental and social initiatives adapted to their communities. We have adopted eco-friendly offices, embedded ESG clauses into all new supplier contracts, partnered with the Blue Marine Foundation to address overfishing, and hosted the Sustainable Startup Challenge to champion clean technology innovation. Our Leyton Sailing Team partnership with the France SailGP Team further extends this commitment, championing hydrogen propulsion research and technologies designed to help decarbonize maritime transport.

At Leyton, community impact is built into how we operate every day. Across our global offices, employee volunteers lead hands-on initiatives — from beach clean-up operations in Morocco to tree-planting drives in the UK. In recognition of healthcare workers during the COVID-19 pandemic, we donated 1% of all fees collected over three months to national health and research institutions in France, the UK, and Spain. We sponsor organizations and foundations whose social, environmental, and societal causes align with our own, and we co-created the 'We Sail for People and Planet' collective alongside our sailing partnerships to advance inclusion and climate action. Through the K-Challenge Academy, we support programs giving young sailors and women greater access to elite competition. Our community work is grounded in the same conviction that drives our client work: that performance only matters when it has purpose.

Inclusion is a lived commitment at Leyton, not a policy document. Our US and Spain offices launched the 'Leyton Women in STEM' campaign to celebrate and amplify the contributions of our female technical consultants — scientists, engineers, and specialists who bring advanced expertise and real industry knowledge to every client engagement. Our SailGP partnership furthers this commitment, supporting programs that open elite-level sailing competition to women and underrepresented young athletes. Internally, we have built a workplace where careers advance on merit: 90% of our leadership team has been promoted from within. Working at Leyton promises a diverse and inclusive environment where every individual has the opportunity to grow, succeed, and make a meaningful contribution to lasting impact.