About Us

Southcrest Consulting, LLC is located in the heart of the Dallas-Fort Worth Metroplex. We have a strong reputation for passionate representation of our clients. We pride ourselves on service with integrity and the highest level of ethical standards. We are known for passionate representation and innovative solutions.

Southcrest Insurance Solutions, LLC serves the insurance needs of businesses, business owners, and their employees. We provide a full suite of carriers to support the insurance needs of any business.

Southcrest
Consulting, LLC

The Southcrest Consulting philosophy is to provide the highest level of client service to the country’s mid-market companies. We have a strong reputation for passionate representation of our clients. Southcrest professionals are experienced in working directly with state and local taxing authority auditors and vendors to solidify client savings.

Southcrest Insurance Solutions, LLC

Southcrest Insurance Solutions, LLC serves the insurance needs of businesses, business owners, and their employees. We have a full suite of carriers to support the insurance needs of any business. Our team does the research to get through the maze of insurance companies and provide the best rates and polices based on your specific needs.

Seth Bassingthwaite, CMI

CEO of Southcrest US, Inc.

Seth is the founder of Southcrest Consulting. He has represented many of the country’s largest taxpayers before state and local taxing authorities. Seth has personally represented taxpayers in almost every state. With over 20 years of experience, he has been able to obtain several key victories on technical issues during administrative hearings. Additionally, Seth has successfully negotiated large settlements on behalf of his clients.

Seth has created a culture at Southcrest Consulting with a focus on technical competence, innovative solutions, and passionate representation. Seth is a frequent speaker on sales tax matters and regularly provides sales tax training to the country’s top companies.

Drew Simek, CMI

President of Southcrest Consulting, LLC

Drew is based in the Chicago office and has over fifteen years of experience providing clients with state and local sales tax and use tax services. Drew is a multistate tax professional and has worked with clients in a variety of industries, including manufacturing, retail, healthcare, printing, transportation and financial services. Drew has advised clients on audit defense, managed audits, refund reviews, voluntary disclosures, nexus analyses, taxability research, due diligence and reserve analyses (FAS5). Drew is a member of the Institute for Professionals in Taxation, a Certified Member of the Institute (CMI) in sales tax and serves on the CMI sales tax committee. Drew is also a member of the Chicago Tax Club and the Taxpayers’ Federation of Illinois.

Marissa Diggs

Director of Business Development

Marissa has been a member of the Southcrest Consulting Team since 2015. In 2019, Marissa was promoted to Business Development Director. She has a proven track record of being able to establish and maintain long-lasting connections with prospects to obtain future business. She has also been able to strengthen key relationships with decision-makers, allowing Southcrest to return millions of dollars to taxpayers across the country.

Get in Touch With Us!

We look forward to meeting with you at your office or our Southlake location.