
Tax & Business Advisors
Who We Are
TABOAS TAX & BUSINESS ADVISORS, LLC is an advisory firm based in Puerto Rico that provides its clients with a wide range of services, including tax advisory, tax compliance, outsourcing, and consulting.
As a Tax & Business Advisory firm we pride ourselves in helping business to excel in today’s challenging fiscal and financial landscape, by providing efficient and effective solutions with the required competence and professionalism.

Our Goal
Our goal is to advice, guide and support our clients through the commercial landscape and comply with fiscal responsibilities of doing business in Puerto Rico. Providing our clients with the implementation of adequate corporate and tax structure, proper risk management strategies, ongoing monitoring, and tax compliance.

Our Services
Puerto Rico government has been proactive in establishing business and tax incentive programs to promote competitiveness and to position itself as a leading business destination. As a US Territory, Puerto Rico provides many business opportunities for different industries that seek an efficient strategy towards their growth goals.
Tax Advisory
Puerto Rico Tax Incentives (Act 60)
Tax Structuring
Transfer Pricing Analysis
Tax Compliance
Individuals Federal and State Tax Returns
Puerto Rico Business Income Tax Returns,
including Tax incentives (Act 60)Personal Property Tax Returns
Volume of Business Declarations
(Municipal Tax License)Annual Reports
Required Estimated Tax Payments

Our Team
Oscar J. Taboas Negroni
Founder & Managing Member
As an Attorney and CPA, Oscar Taboas has extensive experience including tax and corporate consulting, tax compliance, business consulting; tax incentives and decrees application (Act 60 ), mergers and acquisitions, accounting and financial reporting, and other legal services.
Throughout his career, Oscar has gained extensive experience providing services to different industries such as international banking, insurance, construction, manufacturing, trade, investments, accounting, and legal.
Our Team
Michael Zierenberg
Tax Advisory Partner
With a bachelor’s in Business and a Juris Doctorate, Michael Zierenberg has extensive experience in business development, consulting, finance, strategy, and risk management. With over a decade of experience, Michael focuses on Business Advisory and Puerto Rico Tax Incentives (Act60), developing tailored and unique solutions for clients seeking corporate counseling.
Throughout his career, Michael has worked in the public and private sector, serving a small number of law firms, multinational companies, judicial center judges, and government agencies. He is knowledgably of all facets of Puerto Rico Tax Incentives as he has worked in the legal department of the Department of Economic Development and Commerce in the Office of Incentives.