One Group Advisory Firm Co.

One Group Advisory Firm Co., doing business as OgafPhilippines, is a duly registered professional partnership in the Republic of the Philippines and the lawful successor of One Group Accounting Firm, established in 2007 by Ma. Arlene E. De Leon. Built on more than 19 years of professional practice, OgafPhilippines has grown from a core accounting and tax compliance firm into a full-service advisory firm in the Philippines, serving small to medium-sized enterprises (SMEs), startups, and growing organizations across Manila and nationwide.

As the firm’s scope expanded and client needs became more complex, the organization was restructured and formally registered as One Group Advisory Firm Co., reinforcing stronger governance, scalability, and long-term institutional integrity. The name OgafPhilippines represents both continuity and evolution, honoring our legacy while embracing modern, digital-forward, and globally aligned advisory practices. Our commitment remains the same: to provide reliable, ethical, and forward-thinking professional services for businesses in the Philippines.

Our mission is to empower startups and SMEs in the Philippines with reliable, high-impact financial and strategic solutions. We deliver.

OgafPhilippines envisions a future where financial advisory goes beyond compliance, where our work helps build stronger companies, more confident leaders, and smarter strategies that stand the test of time. We are committed to shaping resilient, well-governed, and forward-thinking enterprises through deep collaboration, innovation, and long-term partnership.