Prothro, Wilhelmi and Company

Prothro, Wilhelmi and Company Prothro, Wilhelmi and Company, PLLC, is a Tyler-based CPA and business consulting firm serving individuals and businesses throughout East Texas since 1992.

Prothro, Wilhelmi and Company was founded in 1992 by Thomas G. Prothro, CPA. Since then, our firm has grown from a sole entrepreneur to an experienced, professional team. Our firm is committed to providing clients with quality services that continue to adapt to meet individual and business needs. We believe that by possessing ethical and “eternal values”, a business has “infinite potential” to succeed.

05/25/2026
We enjoyed attending the Tyler Area Chamber of Commerce State of the City event and celebrating the announcement of the ...
05/22/2026

We enjoyed attending the Tyler Area Chamber of Commerce State of the City event and celebrating the announcement of the Leadership Tyler Class 39 graduates! Congratulations to all of this year’s graduates and leaders making a difference in our community. 🎉

Summer is here, and so are our updated hours! If you have anything to drop off after office hours, please feel free to u...
05/18/2026

Summer is here, and so are our updated hours! If you have anything to drop off after office hours, please feel free to use our secure drop box by the front door.

Please help us welcome Rose Rook to the firm! Rose is a student at Texas A&M University and is currently pursuing a Bach...
05/12/2026

Please help us welcome Rose Rook to the firm!

Rose is a student at Texas A&M University and is currently pursuing a Bachelor of Business Administration in Accounting. She plans to continue her education through the Professional Program in Accounting (PPA) at Texas A&M, where she will earn her Master of Science in Accounting with a focus in taxation.
Her areas of practice during her internship will include audits of financial statements for not-for-profit organizations, and employee benefit plans. At Texas A&M, Rose is actively involved in her church and multiple student organizations. In her free time, she enjoys going on walks, participating in sports, and spending time with friends and family. Originally from Tyler, Rose values the opportunity to serve the community she calls home.

We were so happy to welcome the Lindale High School Accounting I class to our office for a field trip and give them a lo...
05/08/2026

We were so happy to welcome the Lindale High School Accounting I class to our office for a field trip and give them a look at a day in the life at an accounting firm!

We truly value our partnership with Lindale High School and love opportunities like this to connect with future professionals. We can’t wait to see what the future holds!

We had the honor of attending the UT Tyler Awards Ceremony yesterday, and it was an incredible event!We want to give a h...
05/01/2026

We had the honor of attending the UT Tyler Awards Ceremony yesterday, and it was an incredible event!

We want to give a huge congratulations to our amazing team member, Brian, on receiving a scholarship from the East Texas. This is such a well-deserved achievement, and we couldn’t be more proud to have you on our team.

Tax Deadline Day is here! 🎉We want to take a moment to give a HUGE thank you to our incredible team. The long hours, ded...
04/15/2026

Tax Deadline Day is here! 🎉

We want to take a moment to give a HUGE thank you to our incredible team. The long hours, dedication, and hard work you’ve poured into this season do not go unnoticed — we truly couldn’t do it without each and every one of you.

To our amazing clients, thank you for trusting us year after year. Your support means everything to us, and we’re so grateful to be part of your journey.

Now… the best way to celebrate making it through tax season? Treat yourself to some well-earned, delicious Don Juan’s! 🌮

Cheers to another successful season!

We had such a great time attending the 2026 LACC Banquet & Auction last night! It was an incredible event, and we’re so ...
04/14/2026

We had such a great time attending the 2026 LACC Banquet & Auction last night! It was an incredible event, and we’re so grateful to have been a part of it.

A very special thank you to Shelbie Glover, the Chamber staff, and board of directors for hosting such a wonderful evening. Your hard work truly showed, and we appreciate not only all that you do for our community, but also your friendship with us. It means more than you know!

Looking forward to many more events like this in the future.

Address

6855 Oak Hill Boulevard
Tyler, TX
75703

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 12pm

Telephone

(903) 534-8811

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