Optimal Assurance Services, formerly known as Optimal Tax Solutions, is a fully registered and licensed audit and consultancy firm in Tanzania. We operate under the legal mandate of the National Board of Accountants and Auditors (NBAA) with registration number PF 502 and are proudly recognized by the Tanzania Revenue Authority (TRA) as registered tax consultants.

Since our inception in 2021, we have been dedicated to delivering exceptional services and measurable value to businesses, public institutions, and not-for-profit organizations in Tanzania and beyond. Our highly skilled team, comprising Certified Public Accountants (CPAs), tax consultants, and experienced professionals, is committed to transforming challenges into opportunities.