Established 1998 • Cole Bay, Sint Maarten
Sentinel Accountants & Consultants is a boutique accounting, tax, payroll, and business advisory firm serving Sint Maarten and the wider Caribbean since 1998.
Years of experience
Serving Sint Maarten since 1998
Dedicated professionals
Boutique firm, personal service
Service lines
Accounting • Tax • Payroll • Consulting
About Sentinel
“To be the most trusted accountant and business advisor on Sint Maarten.”
Sentinel Consultancy N.V., doing business as Sentinel Accountants & Consultants, is a boutique accounting, tax, payroll, and business consulting firm founded by Marlon Gary Matser in July 1998. For more than 27 years, Sentinel has provided professional services to businesses and entrepreneurs across Sint Maarten and the wider Caribbean region.
What began as a small practice has evolved into a respected advisory firm with a team of 19 dedicated professionals committed to helping clients navigate increasingly complex financial, regulatory, and business environments.
Our clientele spans a broad range of industries, including hospitality, aviation, education, retail, restaurants, construction, professional services, and family-owned enterprises. This diversity of experience enables us to provide practical, industry-specific insights while maintaining the personalized attention that defines a boutique advisory firm.
At Sentinel, we recognize that every client is unique. Our solutions are therefore tailored to the specific needs, objectives, and stage of development of each organization. Whether serving a start-up entrepreneur, a growing family business, a nonprofit organization, or a large corporate enterprise, our approach remains the same: deliver timely, accurate, and strategic advice that supports sound decision-making and sustainable growth.
To be the most trusted accountant and business advisor on Sint Maarten — earning trust through competence, integrity, responsiveness, and an unwavering commitment to our clients’ success.
What we do
Accounting, Tax, Payroll & Strategic Advisory for Sint Maarten and the Caribbean.
Through a combination of technical expertise, professional integrity, and a deep understanding of the local business environment, Sentinel continues to build long-term relationships with clients who value trusted advice and dependable service.
Accurate, timely financial statements and management reports that give you a clear picture of your business performance.
Key solutions
Strategic tax guidance and full compliance support aligned with Sint Maarten’s regulatory environment.
Key solutions
End-to-end payroll processing and human resource support so you can focus entirely on running your business.
Key solutions
Strategic financial insight for investments, expansions, governance, and high-level decision-making.
Key solutions
Comprehensive compliance support to keep your business fully aligned with local corporate and regulatory requirements.
Key solutions
Systems, processes, and financial controls that improve efficiency, reduce risk, and support sustainable growth.
Key solutions
Get in touch
Whether you need ongoing accounting support, a one-off tax consultation, payroll administration, or strategic business advice — fill in the form and we will be in touch within one business day.
Address
133 Union Road, Suite F
Cole Bay, Sint Maarten
Telephone
+1 (721) 544-2834
Mobile
+1 (721) 520-1083
Fax
+1 (721) 544-2843
info@sentinelsxm.com
Hours
Monday – Friday, 8:00 am – 5:00 pm