Tax Advisory services
Lower your tax burden and streamline tax management with strategic, end-to-end support
Tax compliance has never been more complex—or more critical. With constantly evolving local regulations, international frameworks like BEPS or DAC6, and increased scrutiny from tax authorities, both national and international companies face significant challenges in managing their obligations.
At GCO, we offer specialized Tax Advisory designed to simplify tax management, reduce fiscal risk, and unlock savings opportunities.
- Stay aligned with evolving tax laws in Spain and internationally—avoiding costly surprises.
- Smart tax planning designed around your company’s structure and goals.
- Identify savings opportunities with proactive, expert analysis.
- Simplify tax management with an all-in-one expert team.
Tax Advisory services
Corporate tax compliance & filings
Managing your tax obligations in Spain or abroad can be time-consuming—and risky if handled poorly. GCO handles your corporate tax filings, declarations, and reporting so you remain fully compliant while freeing your team to focus on strategy, not admin.
- Designed for businesses that need reliable compliance without hiring in-house tax teams.
- Trusted by international companies with operations in Spain.
Tax Advisory services
Tax planning that protects your profits
We tailor tax strategies to your specific business structure and goals—helping you reduce liabilities and increase efficiency. Whether you’re scaling in Spain or managing complex group structures, our forward-thinking approach turns tax planning into a strategic asset.
- Ideal for growing businesses seeking long-term savings.
- Essential for multinationals optimizing group-wide structures.
Tax Advisory services
Tax inspections: Be prepared, not surprised
When tax authorities come knocking, you need a partner who knows how to respond. GCO represents your business during tax inspections with deep technical knowledge, clear communication, and strategic defense—so you can face the process with confidence.
- Essential for businesses selected for audit or facing tax queries.
- Trusted by foreign subsidiaries needing representation in Spain.
Tax Advisory services
International taxation: Navigate complexity with confidence
Whether you operate across borders or receive foreign income, international taxation requires precision. GCO advises on transfer pricing, double tax treaties, permanent establishments, and international compliance frameworks—helping you avoid risks and unlock strategic advantages.
- Perfect for companies with cross-border operations or holding structures.
- Valuable for businesses entering the Spanish market.
Tax Advisory services
Inheritance & succession planning: Preserve value, protect your legacy
Transferring business ownership or family wealth is complex—and heavily taxed if not planned correctly. GCO creates succession and inheritance strategies that reduce fiscal impact and ensure a smooth transition, whether for corporate structures or private estates.
- Ideal for business owners preparing generational transitions.
- Key for international families with assets in Spain.
Tax Advisory services
¿Why choose GCO as your tax advisor?
One-stop firm for tax, legal, labour, and financial advisory.
Certified experts in law, economics, and international tax regulations.
Members of IUSFUL European Legal Network. Access seamless cross-border support and legal coordination throughout Europe.
Proven track record with businesses from SMEs to multinational groups
Multilingual team: Forget language barriers and misunderstandings.
Process and Methodology
A Clear Path to Excellence for your Company
Our customer-centric process is tailored to your specific needs. From initial analysis to strategy implementation, we are with you every step of the way.
- Initial Situation Analysis
- Development of Customized Strategies
- Solutions Implementation
- Continuous Monitoring and Adjustment
Frequently Asked Questions
Answering your questions about our tax advisory service
Do I need tax advisory if I already have an internal finance department?
Absolutely. Our external perspective helps you spot overlooked tax optimization opportunities and navigate complex compliance challenges.
How does international tax structuring work with GCO?
We assess your global operations, apply relevant treaties, and ensure alignment with Spanish and EU tax regulations, minimizing double taxation risks.
Can GCO help with tax inspections or audits?
Yes. We act on your behalf before the tax authorities, preparing documentation, defending your case, and ensuring a strategic response.
What industries do you specialize in?
We work with a wide range—from tech and real estate to industrial and financial services—always adapting our tax strategies to your specific sector.
What are the benefits of GCO being a member of the Spanish Association of Tax Advisors (AEDAF)?
Being members of the Board of Directors of the Catalonia Delegation of the Spanish Association, we have access to resources and updated knowledge about tax laws and regulations in Spain. Furthermore, it allows us to stay abreast of the latest trends and best practices in tax advisory, thus ensuring a high-quality and precise service for our clients.
Our tax team
Meet Our Tax Experts
Experience and knowledge at your service for optimal tax management.
Managing Partner
Tax Department Senior Manager
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