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About Us

Built on expertise. Driven by people.

Tax Pro Alliance is a professional tax preparation, education, and professional development organization serving Southern California.

Diane Portugal, Founder & CEO of Tax Pro Alliance
Founder & CEO

Diane Portugal

Diane Portugal brings over 15 years of experience in tax preparation to Tax Pro Alliance. Throughout her career, she has helped individuals, families, and business owners navigate their tax responsibilities with clarity and confidence.

An entrepreneur at heart, Diane founded Tax Pro Alliance with a dual purpose: to provide clients dependable, caring tax service, and to create a place where aspiring and experienced tax professionals can learn, lead, and grow.

Her leadership is rooted in integrity, accountability, and a belief that we all go further when we share what we know.

Our Mission

To deliver trustworthy tax preparation with care and clarity, and to develop knowledgeable, confident tax professionals through education, mentorship, and teamwork.

We Create Leaders.

We Work Together to Win.

We Don't Compete. We Grow Together.

Our Core Values
01

Integrity

02

Accountability

03

Knowledge Sharing

04

Initiative

05

Respect

06

Professional Growth