About PBTSI

Delivering Quality Accounting Services for More Than Two Decades

PBTSI is an accounting firm in Las Vegas, Nevada, that offers advisory and consulting services for a vast pool of clients. If you’re looking for experienced and reliable certified public accountants to help you with your needs, you’ve come to the right place!

Outside-the-Box Approach to How We Work

Our company was founded on the idea that there is a better way to help clients with their accounting and tax challenges.

Upfront Client Interview and Engagement

We believe that selecting an accounting professional is a personal choice. The accountant you will choose, to properly do their job, will have a window into your finances.

That’s why every client engagement starts with either an initial assessment of your business or individual financial situation to structure the right relationship in the future and ensure that we are the right fit for your needs.

Ongoing Assistance

Our client engagements are structured as ongoing or annual programs, not one-off transactions. This is because year-long contributions to our clients’ businesses can help them avoid the end-of-year panic most people associate with accounting.

Regular Contact

To ensure that we’re always up-to-speed on your situation, we require regular review meetings.

Our Mission, Vision, and Value Statement

Mission Statement

It is our mission to provide our clients with affordable, quality, and timely accounting services, while always focusing on exceptional customer service. Service is the heart of our business.

Vision Statement

We aim to embody the spirit of excellence in all that we do. To uphold a solid reputation of meeting or exceeding our clients needs and expectations; this is how we measure our success.

Value Statement

We operate on integrity, commitment, continuous learning, innovation, and teamwork.


  • Integrity. Integrity is the first and most important of our values because it means we are faithful to them. We say what we do, and we do what we say.

  • Commitment. We are committed to the success of our clients, and through our clients is the success of PBTSI.

  • Continuous Learning. The world is changing fast, and we must continuously learn and improve rapidly ‘to have the highest impact on our customers’ success.

  • Innovation. Innovation is one of our core values because constant improvement in our practices is critical to the successful completion of our mission.

  • Teamwork. By working as a team and balancing the knowledge and skills of all the team members, performance and results are more significant than what can be accomplished by one individual.

Meet Our Team

Stephanie White, Founder / Accounting Director

PBTSI’s fearless leader, Stephanie White, has worked in public accounting since 1997. Stephanie loves helping clients achieve business success by establishing and helping to manage practical and sound accounting processes through CFO/Controller services. She also manages our business consulting and tax departments.Regular meeting with clients is the cornerstone of Stephanie’s success in client retention. Her vast experience in all things accounting and dedication to client service has proven to be invaluable to our clients. Stephanie enjoys traveling, travel photography, working out and focusing on maintaining a balanced life.

For any questions or concerns, Stephanie can be reached at stephanie@pbtsi.com.

Willie White, Co-Founder / Accounting Manager

Our co-captain, Willie White, is dedicated to managing our bookkeeping department as well as our firm accounting. Willie has worked side by side with Stephanie since 2005 and is responsible for the day-to-day operations of PBTSI. Willie has been trained to meet the high standards of the accounting industry through many accounting courses and more importantly, experience.In his spare time, Willie loves to be with his wife, golf, golf and golf some more.

For questions regarding the status of your business bookkeeping project or if you have an PBTSI accounting issue, Willie can be easily reached at willie@pbtsi.com.

Chelsea Martins, Practice Manager

With her dynamic administrative and leadership background, Chelsea Martins is always there to provide administrative and technological support to our clients and team. She also assists with business compliance projects such as business formations and registered agent work. Outside of work, Chelsea enjoys spending time with her family, camping and traveling.

For any urgent matters or questions relating to scheduling, accessing the client portal or password updates, please contact Chelsea at chelsea@pbtsi.com or (725) 258-2848.

Sonja Williamson, Accounting Manager

The PBTSI go to for large client CFO/Controller work is Sonja Williamson. Sonja has 15+ years of experience in public accounting and has been acting controller for several companies. Sonja’s skills in financial reporting, bookkeeping, payroll processing, accounts receivable and accounts payable and her expert level knowledge in various accounting software’s such QuickBooks (Online and Desktop), Sage and MS Office aid in her knowledge in accounting and the financial reporting process.  She also possesses excellent analytical and communication skills, allowing us to resolve complex accounting problems and come up with systems for our clients to aid in their growth.In Sonja’s spare time, she loves to spend time with her family, listen to audio books, and when she has time to do so, binge watch TV.

Sonja is available at sonja@pbtsi.com for designated client’s CFO/Controller needs.

Raymond McMillion, HR and Payroll Specialist

Raymond is passionate about applying his acquired skills and knowledge to help your business achieve its goals!  Raymond has a diverse background in HR including consulting, financial services, and food and beverage services. He sets your company up for success by overseeing all HR operations.  Outside of work, Raymond is an avid traveler, with a keen interested in exploring different cultures around the world. Raymond has a passion for music and enjoys playing the piano. He is also fluent in Spanish.

For all HR and Payroll communication, please contact Raymond at raymond@pbtsi.com

Darshan Shah, Accounting Clerk

Darshan Shah is the cornerstone of our back office. Darshan starts work on all client tax returns; from business to individual. He also assists Willie in starting most monthly and quarterly bookkeeping projects. Darshan has 8+ years of experience working in public accounting, which came after the completion of his bachelor’s degree in accounting. His experience includes preparation of tax filings such as corporate, partnership and individual income tax returns of the public as well as the private entities dissolution and liquidations. He’s also experienced in accounting and has worked in a wide range of software’s from QuickBooks to Xero. Apart from the profession when Darshan gets the chance, he loves to travel, play cricket and listen to and sing music.

Although Darshan is very proactive in client communication, he can be reached at accountingclerk@pbtsi.com for questions relating to tax return and general bookkeeping status/needs.

Krishna Soni, Accounting Assistant

With 7+ years’ experience in public accounting Krishna Soni is an excellent addition to our PBTSI team as our accounting assistant. Her responsibilities include but not limited to starting monthly and quarterly bookkeeping projects. Krishna’s experience in bookkeeping, payroll accounts receivable and accounts payable and banking, manager review in bookkeeping is what make her a valuable staff member. Not only does she have experience on the bookkeeping side of accounting Krishna has years of knowledge on filing 1099 forms. Krishna has worked in accounting software such as Xero, QuickBooks Desktop and QuickBooks Online. She has obtained knowledge to work with software like Drop Box, Dext, Bill.com, Gusto, ADP, Paychex and Sure. When she is not working Krishna enjoys listening to melody music, reading novels and enjoys visiting new places.

For simple questions regarding bookkeeping, Krishna can be reached at accountingassistant@pbtsi.com.

Let’s Talk

Interested in learning more about our company or the services we offer? Drop us a line today. Reach Out To Us