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About Us

The Associates of Carroll & Johnston, CPAs, LLC are committed to your success. As we strive to learn your business, we work with you to create the best opportunity for you to be successful. It is our goal to improve your tax and capital position as well as your business structure, benefit packages, acquisition potential and much much more. Put our professional, dedicated and qualified staff to work for you.

Our Team

John S. Carroll, CPA

John S. Carroll holds a Bachelor of Science Degree in Accounting from Louisiana College and a Masters of Business Administration from the University of Chicago.

John's work experience began with small CPA firm during his undergraduate college years. John has nine years of international accounting experience with the firms of Deloitte and Touche, and BDO Seidman. In February of 1997, after purchasing a CPA firm, he moved back to his home state of Louisiana to operate his own firm, John S. Carroll, CPA, LLC. In January 2018, he added a partner to the practice, thus changing the company name to Carroll & Johnston, CPAs, LLC. John specializes in Oil and Gas/Consulting & Logging industries, but is capable of working with any accounting needs.

John is a member of the American Institute of Certified Public Accountants and the Louisiana Society of Certified Public Accountants. John also serves on the Board of Trustees for the Louisiana Baptist Foundation, and is a Bank Director at Caldwell Bank & Trust and Progressive National Bank. John is a member of First Baptist Church where he serves as Church Treasurer, Men’s Ministry Director, Deacon and Sunday School teacher.

John and his wife, Sonja, live in Columbia, Louisiana. They have three grown children, a foster daughter and six grandchildren.

Bradley L. Johnston, CPA

Bradley L. Johnston holds a Bachelor of Business Administration in Accounting from the University of Louisiana at Monroe.

Brad began his accounting career in 1990 when he joined his father’s accounting firm Johnston & Company, CPAs, LLP. In January 2018 he joined Carroll & Johnston, CPAs, LLC. He has extensive experience in tax planning and preparation for individuals and businesses through multiple industries, ranging from small businesses to multi-million dollar corporations. He has many years of experience in the Auditing field as well.

Brad is a member of the American Institute of Certified Public Accountants and the Louisiana Society of Certified Public Accountants. Brad is a past President of the Northeast Chapter of Louisiana Society of Certified Public Accountants, and has served on many committees for the society. He has served on the board of several non-profit organizations through the years, and is currently a member of the West Monroe Civitan Club. Brad is a member of Family Church in West Monroe, Louisiana.

Brad and his wife, Sharon, live in West Monroe, Louisiana. They have four daughters and one grandson.

Tammy Duke

Tammy Duke began her career in accounting in 1998. She is our senior staff accountant and manages our accounting department and staff. Tammy also prepares corporate tax returns, bridging accounting and tax return software together. Because of Tammy’s level of experience and her work in both the accounting and tax departments of this firm, she is the primary contact person for the client’s more complex accounting issues. She enjoys meeting the needs of our clients.

Tammy and her husband, James, live in Columbia, Louisiana. They have one daughter, Samantha. They are members of First Baptist Church of Columbia.

Judy Dudley

Judy Dudley began her accounting career in 1990 as receptionist and secretary working for a CPA firm and has worked for our firm since its inception in February of 1997. She has worked in many positions in our firm, including receptionist, secretary, and general office manager. Judy is currently a Registered Tax Preparer. Judy meets with clients who have questions about their personal tax returns, and she manages our seasonal tax preparation staff.

Judy is married to Jacky Dudley, and they have two daughters and three grandchildren. She and Jacky are members of First Baptist Church of Columbia. Judy loves working with all her co-workers because she considers them family.

Amanda Allbritton

Amanda Allbritton began working for our firm in April of 2001. Amanda, as the accounting department supervisor, assigns clients to our accounting staff and oversees timely processing and completion of all bookkeeping and payroll work.

Amanda and her husband, Craig, have two daughters, Madalyn and Camryn, and they live in Columbia, Louisiana. They are members of Grayson Baptist Church, and they participate in many activities in their church and community.

Jamie Martin

Jamie Martin began working in the accounting department of our firm in May of 2008. Jamie enjoys providing personal service to her assigned clients and looks forward to helping them with any of their bookkeeping and payroll needs.

Jamie and her two daughters, BreAnna and Macy, live in Columbia. They are active members of Outreach Baptist Church, where Jamie serves as music director. They are also involved in many activities in the community.

Jaime LaVigne

Jaime LaVigne began with our firm as receptionist in 2007. In 2012, she moved to the position of Office Administrator, where she handles office billing and accounts receivable, as well as other administrative tasks, including scheduling of appointments.

Jaime and her husband, Sonny, live here in Columbia. They have one son, Gabe. Jaime and her family enjoy attending church together, going on mission trips, exploring God’s beautiful creation, and participating in various sports activities.

Elecia Wyles

Elecia Wyles began working in our accounting department in April of 2017. Elecia enjoys helping all of her assigned clients with any of their bookkeeping and payroll needs. She also enjoys the friendships she has made with her co-workers.

Elecia is married to Jeffrey Wyles. They have two grown children and one granddaughter. She and Jeffrey are members of First Baptist Church of Columbia where they love serving the Lord.

Shelia Crain

In 2003, Shelia began working with our firm as a Tax Preparer, working during tax season each year. In 2015, she moved to full-time employment, and is now our Receptionist. She also helps with office administrative tasks when needed. Shelia still works with our tax return team by gathering and directing information needed to prepare Tax Returns. She also loves helping out the girls in accounting whenever she has time.

Shelia and her husband, Freeman, have been married 47 years, and are both native to Columbia. They have two children, three grandchildren, and two great-grandchildren, and are active members of Outreach Baptist Church. They love their church family and the fellowship they have with them. They enjoy attending church services together, keeping alive her Mother’s family tradition of cooking Sunday lunch for family and friends, and traveling to Branson every chance they get. They also enjoy their grandson’s baseball games. God has been so good!

Jamie Carroll


Jamie Carroll is originally from Dallas, Texas. She holds a Bachelor Degree in Sport Management and minor in Business Administration from Texas A&M University, and a Post Baccalaureate Certificate in Accounting from University of Louisiana at Monroe. She plans to sit for the CPA exam as well.

Outside of work Jamie enjoys spending time with her husband, Josh, and their daughters, Kyndi and Bexley. They are members of First Baptist Church Columbia and currently reside in Columbia, LA.

Casey Carroll

Casey Carroll, graduated in May of 2010 from Louisiana College with a Bachelor of Science degree in Business Administration. She began working for our firm in August, 2010, as a staff accountant. She worked full time with our firm, but transitioned to part time in 2013 to spend more time at home with her children. She still enjoys working with our clients and staff to provide quality service.

Casey is married to Jason Carroll, and they have four children, Bentley, Bristol, Emma Rae, and Ellis. They are members of North Monroe Baptist Church in Monroe, Louisiana, and they live in West Monroe, Louisiana.

Sonja Carroll

Sonja Carroll is the wife of John Carroll. Sonja handles office advertising, writes and edits publicity materials and makes decisions for community sponsorships and donations from the company. She also oversees the interpersonal relationships of the office staff, plans events for the office family, and helps out with administrative tasks during tax season.

John and Sonja have three grown children, a foster daughter, two daughters-in-law and six grandchildren. She and John are members of First Baptist Church of Columbia. Sonja is the women’s minister there, and enjoys teaching Sunday school and discipleship classes and singing in the choir and praise team. John and Sonja enjoy spending time with their office family and are very thankful to have such a wonderful team working together.