Our vision is to serve our partners with unrivaled performance, inspiring those we serve to be of service to others to create a positive impact.

Meet Southland Data Processing.

Since 1986, we’ve been helping businesses like yours streamline accounting and payroll, manage human resources, control costs, and stay current with technology, laws and regulations.

Our customers choose us because we put people first.
We don’t believe in voicemail during business hours. That means any time you call between 8:00am – 5:00pm Monday through Friday, you will talk to a real live person, who will help you immediately.
We focus on long-term relationships.
Our goal is to help your business increase profitability and succeed. Together, we’ll work to engage, identify, and execute solutions to achieve your business objectives.
We're here to be the experts you hired us to be.
By maintaining internal policies and procedures, training, and continually investing in our team’s education to provide you with the expertise you need, we do the work so you don’t have to.
We believe in accountability.
This is accomplished by the direct accessibility of our dedicated client advocates, an annual independent SOC 1/SASE 18 Type II audit, and empowering you with the tools to have visibility to tax payments made on your behalf.

"This service is too good to be true.
I have used it for 4 years without a hitch.

Jack L

Fontana Foundation of Hope
"SDP representatives are always prompt, professional, and willing to help."

Denise L

Jeved Management, Inc.
"Every time I call you guys are the best
in helping me get what I need!

Donna N

Best Overnite Express
"Always prompt and professional and at the same time
feel like a close friend.

Helen L

Petrillos Restaurant Inc.
Learn more about how we help our clients in our SDP Client Spotlights

Our History.

Most of us grew up hearing stories of fairy tales that end with happily ever after. Similar to fairy tales, our story starts a long time ago when SDP was just a dream that was built from the hearts of a wonderful couple, Peter and Elizabeth Carroll.

The Carrolls’ entrepreneurial spirit fueled the fire to build an organization that grew based on trust and relationships. Since then, SDP has grown mostly by word of mouth and the “tell a friend” motto, now serving clients in all 50 states and processing over $1.37 Billion in annual transactions.

Following the servant leadership model of our founders and Board of Directors, we strive to build on the relationships we have built over the years and create new ones. The solutions we provide become the thread that connects our team to the people and organizations we partner with.

SDP is about more than just delivering the solutions with technology or the paycheck. We hope you will experience the heart of SDP, which is our people. Like most fairy tales, we want our relationship to be “…and they lived happily ever after.”

Fast Facts.

• Southland Data Processing was established in 1986

• We process over $1.37 Billion dollars in transactions each year

• SDP handles tax filings in all 50 states from our California office

• We don’t have voice mail during business hours

• SDP is SOC 1 / SSAE 18 Type II Certified

• We donate to charities through our SDP Give Back™ Program

Memberships and Partnerships.