Colonial Consulting Group
Machine Learning Data Processing
Providing Unsurpassed SAiLT Compliance
The Pieces Fit, if you know Where and Why
the future of state and local tax processing is now
About Us
At the core of Colonial’s Operation is LeXiAi, our proprietary tax compliance engine built with decades of expert logic and fourth-generation machine learning.
$15B+
Processed tax decisions since 2021
Since 1996
State & Local Tax Consulting
250m+
Processed SALT refunds since 2012
150
years of combined team experience across 46 jurisdictions
Our Services
Strategic Tax Services
Backend by Technology
Our services are designed to deliver compliance and measurable savings powered by proprietary tools and decades of experience.
Tax Consulting
Customized sales and use tax solutions led by seasoned tax attorneys and professionals. We specialize in multi-state compliance, audit risk reduction, and resolving complex statutory challenges.
Litigation Support & Audit Defense
Our experts are available to handle / review SALT audits as well as provide SALT related litigation services and or litigation support
Tax Actual Verification
Our experts use the Lexington platform to verify monthly use tax accruals especially for Direct Pay Permit holders ensuring accuracy while freeing your internal team.
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Medical Asset Disposition
Providing IT and Durable Medical Equipment end-of-life disposition. Securely and efficiently processing your medical equipment erasure, value assessment and final disposal methodology.
Tax Advisory Services
Providing CFO-level guidance on tax structure and risk management, and insurance insights. Our frameworks are built to enhance profitability and reduce financial exposure all while requiring minimal time from your internal teams.
Tax Consulting
Customized sales and use tax solutions led by seasoned tax attorneys and professionals. We specialize in multi-state compliance, audit risk reduction, and resolving complex statutory challenges.
Tax Actual Verification
Our experts use the Lexington platform to verify monthly use tax accruals especially for Direct Pay Permit holders ensuring accuracy while freeing your internal team.
Litigation Support & Audit Defense
Our experts are available to handle / review SALT audits as well as provide SALT related litigation services and or litigation support
Tax Advisory Services
Providing CFO-level guidance on tax structure and risk management, and insurance insights. Our frameworks are built to enhance profitability and reduce financial exposure all while requiring minimal time from your internal teams.
Medical Asset Disposition
Providing IT and Durable Medical Equipment end-of-life disposition. Securely and efficiently processing your medical equipment erasure, value assessment and final disposal methodology.
Our Process
Our Proven Process
Step-by-Step Structure:
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Data Intake
You provide us your AP Data & access to invoice images
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Historical Matching
LexiAi Analysis millions of tax transactions for historical accuracy
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Multi-Ai Refinement
Data runs through a series of specialized Ai models to detect patterns, flag errors, and sort classifications
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Human Review
Once 95%+ of items are accurately categorized, our tax professionals review the edge cases.
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Continuous Learning
The system remembers corrections — so it improves with every engagement.
“Proven techniques from data science & machine learning”
Our team
Meet the Team Making
Things Happen Every Day
Britt C Dobbins
Principal - President / CEO
Janna L Lindberg
Principal - Vice President
Steven B Mathis
Principal - CFO
Chuck W Howard
Principal - CIO
Jeff T Stauder
Principal - Vice President
Raymond P Carpenter
JD - Of Counsel
Rick Mathis
Director LeXiAI
Pam Taylor
Manager LeXiAi Processing
Suwit Phornroekngam
Director Systems
Boonchoo Chatsrinopkun
Director Ai
rAi
Take a Deep Dive
and find the Devil is in the Details
with an rAi Interview
Arkansas
Georgia
Indiana
Iowa
Kansas
Kentucky
Michigan
Minnesota
Nebraska
Nevada
New Jersey
North Carolina
North Dakota
Ohio
Oklahoma
Rhode Island
South Dakota
Utah
Vermont
Washington
West Virginia
Wisconsin
Wyoming