meet GCO
We reduce risk. We strengthen your decisions. We protect your business.
Tax, labour, financial, corporate and international advisory services for companies that need clarity, rigour and a trusted partner by their side.
Expert advisory as a strategic and operational advantage
Businesses today operate in environments defined by regulatory change, organisational complexity and accelerating decision cycles. In this context, working with a specialist adviser is no longer limited to ensuring compliance — it is about securing clear judgement, structured processes and visibility over the implications of every decision.
Effective advisory support enables organisations to anticipate risks, prevent inefficiencies and maintain alignment across all key areas. For companies with complex structures or cross-border operations, this combination of clarity and consistency becomes a proven operational advantage that strengthens resilience and execution capability.
What working with GCO feels like for your business
When an adviser brings technical depth and a broad perspective, everything becomes easier: decisions are clearer, processes run more smoothly and the future feels more predictable. This is what our clients experience:
- Sound technical judgement that reduces real risk
Every business decision has consequences. Our expertise helps you assess options calmly, understand the implications and avoid issues before they surface. - Confidence when navigating complex environments
Whether you’re expanding, restructuring or operating internationally, you gain access to integrated analysis and guidance that helps you move forward with certainty. - Consistency across every key area of your business
Tax, labour, financial and corporate matters work best when they’re aligned. We help keep everything coherent so your organisation can act with confidence and shared direction.
A vision that grows. Values that stay.
A legacy that began in 1978
GCO was founded by Joan Casas Obón with a clear purpose: to offer expert advice delivered with proximity, trust and genuine understanding of how businesses operate. His values — honesty, quality, commitment and care — became the backbone of our firm and continue to guide our work today.
Moving forward with experience and a modern mindset
Today, GCO is led by a dynamic and specialised team that carries this legacy forward. We combine decades of experience with modern methodologies, advanced technology and refined processes that allow us to work with accuracy, efficiency and agility.
This balance of heritage and innovation is what enables us to offer rigorous advice, tailored solutions and strategic guidance that evolves with your business and with the market.
Meet the team behind the decisions
Our team brings together economists, lawyers and specialists with deep expertise across tax, labour, financial and corporate domains.
We support national and international organisations in addressing complex regulatory, operational and structural challenges.
Co-Founder
Co-Founder
Managing Partner
Partner. Tax department
Tax Department
Tax Department
Financial Department
Financial Department
Labor Department
Labor Department
Labor Department
Labor Department
Administration. Office manager
Administration
How we work: structured, rigorous and continuous support
Our methodology is designed to provide clarity, control and consistency throughout the advisory process.
1. Initial analysis and consultation
In-depth understanding of your structure, priorities and risk areas.
2. Strategy design
Development of a tailored approach aligned with your objectives and regulatory requirements.
3. Implementation and compliance
Execution and management of tax filings, payroll, reporting and corporate structures with accuracy and operational discipline.
4. Ongoing support and optimisation
Continuous monitoring and adaptation to regulatory changes, strategic shifts and organisational evolution.
A dedicated adviser coordinates the entire process, ensuring coherence, efficiency and a single point of contact for your organisation.
Find out how our consulting services can help you
Optimize your Business Strategy
