Abdo Announces Phil Wuollet as New Tax Leader

Scottsdale, AZ – October 20, 2026 – Abdo LLP, a leading full-service accounting and advisory firm, is pleased to announce the appointment of Phillip (Phil) Wuollet, CPA, MTax, as its new Tax Leader.

Wuollet joined Abdo as a partner in 2022 to help establish and grow the firm’s Scottsdale office. Since opening its doors with a two-person team, the office has expanded significantly and now serves clients throughout Arizona across the real estate, construction, manufacturing, nonprofit, and government sectors.

With more than 20 years of experience in tax and business advisory services, Wuollet brings deep expertise in real estate, income tax advisory, strategic planning, and entity structuring. In his new role, he will lead Abdo’s tax practice while continuing to support the firm’s growth and client service efforts.

“I’m excited to continue the firm’s strong tradition of tax leadership,” Wuollet said. “I look forward to working with our team to help clients prepare for what’s ahead and continue providing the service they expect from Abdo.”

Since 2025, Abdo Partner Christine (Chris) Powers has served as both Abdo’s Client Operations Leader and Tax Leader. With Wuollet assuming responsibility for the firm’s tax practice, Powers will now focus fully on leading firm operations and supporting Abdo’s continued growth.

“As I transition from leading our tax practice into my role in operations, I’m excited to pass the tax leadership role to Phil,” Powers said. “I look forward to supporting him as he leads our talented team and continues delivering exceptional value to our clients.”

“Chris has done a phenomenal job leading our tax practice while also serving as Client Operations Leader,” said Abdo Managing Partner Steve McDonald. “Her leadership has helped build a strong tax team and positioned us well for the future. I’m confident Phil will do a terrific job building on that momentum into the years ahead. He’s played an important role in growing our Arizona presence and building strong relationships with clients throughout the region.”

Arizona remains an important market for Abdo as the state’s continued growth creates new opportunities for businesses and communities. Through its Scottsdale office, Abdo provides accounting, tax, advisory, outsourced finance, and industry-specific consulting services to organizations throughout the region.

Wuollet holds a Bachelor of Science in Accountancy and a Master of Taxation from Arizona State University. He is a member of both the Arizona Society of Certified Public Accountants and the American Institute of Certified Public Accountants. He and his wife, Tiina, live in Phoenix and have 8 children and 3 grandchildren.

To learn more about Abdo’s Scottsdale office and its growth in the Arizona market, read Phil’s most recent article here.