Our services
Confidence, independently earned
01
Assurance & Audit
Our assurance practice delivers independent, rigorous examinations of financial statements that build stakeholder confidence and enhance the credibility of your financial reporting. We bring deep expertise in International Financial Reporting Standards (IFRS) and local regulatory frameworks.
- Financial statement audits under IFRS and local GAAP
- Internal audit and controls assessment
- Regulatory compliance reviews
- Risk assessment and management advisory
- SOX compliance and reporting
- Agreed-upon procedures and special reports
- Due diligence support for transactions
More about Assurance & Audit
Whether you are a growing enterprise or an established multinational, our audit teams combine global methodologies with local insight to deliver comprehensive, efficient engagements.
Across every jurisdiction
02
Tax Advisory
Navigating the complexities of international taxation requires both technical precision and strategic vision. Our tax professionals help you structure operations efficiently, ensure compliance across multiple jurisdictions, and capitalize on opportunities within the law.
- International tax planning and structuring
- Transfer pricing documentation and compliance
- Tax compliance and reporting (corporate, VAT, income)
- Cross-border transaction tax advisory
- Tax dispute resolution and authority representation
- Individual tax planning for executives and HNWI
- Colombian and French tax specialization
More about Tax Advisory
From Bogotá to Paris, we understand the regulatory landscapes that impact your business and provide clear, actionable guidance.
Decisions, made clearer
03
Consulting
In a rapidly evolving business environment, the right strategic guidance can be the difference between growth and stagnation. Our consulting practice partners with executives to solve their most pressing challenges — from operational optimization to digital transformation.
- Business strategy and market entry advisory
- Operational efficiency and process improvement
- Digital transformation roadmaps
- Financial modeling and forecasting
- Organizational restructuring
- Performance management and KPI development
- Risk management frameworks
More about Consulting
We bring a disciplined, data-driven approach to every engagement, always keeping our focus on outcomes that create measurable value.
Value that outlasts the closing
04
Strategy & Transactions
Whether you are acquiring a company, divesting an asset, or seeking strategic alternatives, every transaction represents a defining moment. We provide expert guidance to ensure these moments create lasting value.
- Mergers and acquisitions advisory
- Financial and commercial due diligence
- Business valuation and fairness opinions
- Deal structuring and negotiation support
- Post-merger integration planning
- Divestiture and carve-out advisory
- Strategic alternatives assessment
More about Strategy & Transactions
Our transaction advisory team brings deep sector expertise and financial acumen to every deal, supporting you from initial strategy through post-deal integration.
We run the back office
05
Outsourcing
We take on the complexity of your financial back-office so you can concentrate on what matters most — running your business. Our outsourcing practice delivers reliable, precise accounting and financial management tailored to your company's needs and regulatory environment.
- Full-cycle accounting and bookkeeping
- Payroll processing and administration
- Accounts payable and receivable management
- Monthly and annual financial reporting
- Tax filing and compliance management
- Treasury and cash flow management
- IFRS and local GAAP reporting
More about Outsourcing
From daily bookkeeping to monthly reporting, our dedicated teams operate as a seamless extension of your organisation, applying rigorous standards and local expertise.
What you leave behind
06
Entrepreneurship & Private Clients
Entrepreneurs and private individuals face unique financial challenges that demand a personal approach. We provide bespoke advisory services designed to help you launch ventures, structure wealth, and navigate the complexities of personal and business finance.
- Business formation and incorporation advisory
- Personal wealth structuring and planning
- Family office advisory services
- Succession and estate planning
- Investment structuring and analysis
- Cross-border personal tax planning
- Startup financial advisory and CFO services
More about Entrepreneurship & Private Clients
Our advisors combine technical expertise with a deep understanding of the entrepreneurial journey, offering guidance from initial incorporation through long-term wealth preservation.
Castillo & Co · since 1990
One thread, from the first question to what you leave behind.
Start the conversation
