Auditoría y Gestión S.A.S. (AYG) is a Colombian professional services firm with more than 30 years of experience supporting organizations in audit, assurance, statutory audit, accounting, tax, consulting, risk management, internal control and legal advisory services. AYG supports international investors and companies with integrated audit, tax, accounting, legal, payroll and regulatory services—from evaluating market entry and establishing a local presence to ongoing compliance, operations and growth. Based in Bogotá, AYG has built its reputation through long-term client relationships, technical excellence, professional independence, and a deep understanding of the Colombian business and regulatory environment. The Firm serves private companies, public and mixed-economy entities, non-profit organizations, and regulated institutions across multiple industries, with particularly strong expertise in the healthcare sector. AYG performs its professional activities under internationally recognized auditing, accounting, ethical, and quality management standards, supported by continuous professional development, technology, data analysis, and structured review and supervision processes. More than three decades of local experience, led by experienced professionals and now connected to a global network — positioning AYG to deliver greater value in Colombia and across international markets.
AYG provides comprehensive audit and assurance services designed to strengthen transparency, reliability and confidence in financial and non-financial information. Our services include financial statement audits, statutory audit (Revisoría Fiscal), external audits, special-purpose reviews and agreed-upon procedures. Our approach combines internationally recognized auditing standards, risk-based methodologies, sector expertise and technology-enabled audit tools, including audit management systems, data analytics, automated testing and information systems reviews. These capabilities allow our teams to analyze larger volumes of information, identify anomalies and trends, strengthen audit evidence and improve the efficiency and depth of our procedures. We focus not only on compliance, but also on identifying opportunities to strengthen internal controls, governance, financial reporting and information reliability.
AYG delivers multidisciplinary advisory services that help organizations improve performance, strengthen decision-making and navigate complex business, financial and regulatory environments. Our capabilities include financial advisory, corporate finance, accounting advisory, business transformation, management consulting, legal and regulatory support, process improvement and strategic decision support. By combining the expertise of accountants, economists, business administrators, lawyers, engineers and sector specialists, we provide integrated advice that connects financial analysis with operational, legal and strategic considerations. Our objective is to help clients transform information into better decisions and build stronger, more resilient and sustainable organizations.
AYG helps organizations identify, assess and manage financial, operational, regulatory, technological and strategic risks through an integrated and practical approach. Our services include enterprise risk management, internal control assessments, internal audit, compliance reviews, fraud and forensic engagements, governance reviews, and the design and evaluation of risk management frameworks. Our risk capabilities are strengthened by information systems and technology tools that support data analysis, automated control testing, process monitoring, identification of unusual transactions and assessment of IT-related risks and controls. We also evaluate the reliability of information systems and their impact on financial, operational and compliance processes. By combining technology, multidisciplinary expertise and sector knowledge, we help management and boards strengthen control environments, anticipate emerging risks and improve organizational resilience.
AYG provides comprehensive tax advisory and compliance services to Colombian and international organizations, combining technical expertise with a practical understanding of business operations and the Colombian regulatory environment. Our services include corporate tax compliance, tax planning and advisory, indirect taxes, tax reviews, tax audits and proceedings, transfer pricing coordination, and support on the tax implications of business transactions and investment structures. For multinational companies and foreign investors, we also provide integrated BPO services covering accounting, tax compliance, payroll coordination, financial reporting, regulatory filings and ongoing administrative support. This allows international groups to centralize key local processes with a trusted team that understands both Colombian requirements and the reporting needs of global organizations. Our multidisciplinary approach combines tax, accounting, legal and financial expertise to help clients maintain compliance, manage tax risk, improve reporting efficiency and operate confidently in Colombia. AYG acts not only as a tax advisor, but as a long-term local partner supporting the day-to-day financial and regulatory needs of multinational businesses.
AYG integrates technology into the delivery of its audit, risk and BPO services to enhance efficiency, control, traceability and decision-making. Our technology capabilities include audit management platforms, risk assessment tools, data analytics, automated testing, information systems reviews and digital monitoring solutions that support the identification of anomalies, evaluation of controls and analysis of large volumes of financial and operational information. In risk and internal audit engagements, our tools help strengthen risk mapping, control testing, issue tracking, follow-up processes and management reporting, providing organizations with greater visibility over their risk and control environments. Technology also plays a central role in our BPO services, supporting accounting, tax compliance, payroll coordination, financial reporting, reconciliations, regulatory filings and management information. Through digital workflows, structured controls and data-driven processes, we help multinational and local companies improve accuracy, consistency and operational efficiency. By combining technology with our audit, risk, accounting and advisory expertise, AYG delivers more integrated, reliable and scalable solutions for clients operating in increasingly complex environments.
Our team brings together certified public accountants, auditors, lawyers, economists, business administrators, engineers, healthcare professionals and management consultants who work collaboratively to deliver integrated solutions to complex business challenges. Many of our professionals hold master’s degrees and postgraduate qualifications in areas such as finance, auditing, taxation, management, risk, law, business administration and other specialized disciplines. This advanced academic background, combined with extensive professional experience, allows us to approach each engagement with technical depth and a broad business perspective. With more than three decades of experience as a firm, Auditoría y Gestión has developed strong expertise in audit and assurance, statutory audit, accounting, taxation, internal control, risk management, finance, legal advisory and business consulting. Our multidisciplinary structure combines financial, legal, regulatory, operational, technical and sector-specific knowledge, enabling us to provide advice that is both technically robust and practical. Our partners and directors remain actively involved throughout engagements, ensuring senior-level attention, consistency and quality across our work.
Marisol Florian Asprilla is the Legal Representative and General Manager of Auditoría y Gestión S.A.S., where she also leads the firm’s legal advisory practice. A lawyer with a Master’s Degree in Public Law for Administrative Management, she brings more than two decades of experience in public law, administrative contracting, infrastructure, regulatory matters and legal audit. She has been part of AYG since 2003 and supports public and private organizations through legal advisory, contractual risk assessment, regulatory compliance and multidisciplinary audit and consulting engagements. Her experience covers public procurement and government contracting across pre-contractual, contractual and post-contractual stages, including legal due diligence, contract amendments, administrative proceedings and contract liquidation. She has advised organizations and projects in infrastructure, agriculture, mining, healthcare and the social sector, combining legal analysis with executive leadership and a practical, risk-based approach to management decision-making, contract execution and regulatory compliance.
Yessica Lorena Florian Asprilla is Administrative & Finance Manager at Auditoría y Gestión S.A.S. and an Economist from Universidad de los Andes. Her professional background combines audit and assurance experience with financial, administrative and quantitative analysis. She has worked with AYG in audit roles since 2014 and has supported engagements involving healthcare, nonprofit and service-sector organizations, with exposure to financial, tax, risk, governance, internal control and management matters.
Her earlier experience includes quantitative analysis for the German Cooperation – GIZ and work linked to public-sector institutions and public policy. She brings economic reasoning, statistical analysis and public policy knowledge to multidisciplinary assignments, supporting financial reviews, risk-based analysis and management decision-making. Her current leadership role also contributes to the firm’s administrative and financial management, complementing AYG’s technical and professional service capabilities.
Julio Cesar Florian Asprilla is a Partner at Auditoría y Gestión S.A.S. and leads the firm’s Back Office and Outsourcing Services practice. A Business Administrator and Certified Public Accountant with a Master’s Degree in Financial Management and Auditing from Universitat Pompeu Fabra, he has developed his career at AYG since 2010. He leads accounting, financial reporting, tax compliance, finance operations and managed services for clients across multiple industries, with responsibility for service quality, process improvement, client relationships and multidisciplinary team supervision. He also serves as Senior Auditor, Lead Auditor and Engagement Partner on selected audit, assurance, risk, tax, internal control and advisory engagements. His expertise includes ISA, IFRS, financial reporting, taxation, enterprise risk management, corporate governance, internal control, outsourcing, process optimization and data-driven analysis.