The State Tax Experts

Mitigating Financial RiskEnhancing State and Local Tax Compliance • Expanding Technology

About Us

GSE –is a boutique tax consulting firm specializing in helping businesses navigate the complexities of state and local taxation. We partner with companies across industries to protect their bottom line, uncover savings, and ensure compliance in every jurisdiction they operate.

Whether you’re expanding into new markets, developing new products, restructuring or adjusting business operations, or simply want a second opinion on your current tax practices, we deliver smart, strategic tax solutions that align with your business goals and keep you ahead of the curve.

At GSE, we are committed to addressing what matters most to you:

  • Staying compliant with complex and constantly changing tax laws across the states and localities where you do business
  • Fully understanding and utilizing available tax credits, incentives, exemptions, and abatements, including property tax value reduction opportunities
  • Managing risk while identifying strategic state and local tax planning opportunities that drive financial results

Tax laws are constantly changing to keep pace with the digital economy, global expansion, and shifting consumer behavior. As a result, companies face growing complexity and that’s where we come in.

Our seasoned professionals collaborate directly with your team to assess your tax position, streamline compliance processes, and uncover missed or emerging opportunities. We blend into your operations as a true extension of your internal team, offering high-impact tax strategies without disrupting your business flow.

Let’s work together to reduce tax exposure, improve cash flow, and turn your SALT obligations into strategic advantages.

Ready to uncover tax savings and reduce risk?

Let’s talk. Contact GSE – The State Tax Experts to schedule your consultation.

We partner with finance and tax leaders across a wide range of industries to provide multi-state and local services, including:
  • Automotive – mitigating exposure across service networks, dealer locations, data centers, and parts distribution, in addition to covering the complexity of nexus, licensing, and emerging EV and subscription models.
    View Case Study

  • Manufacturing and Distribution – navigating exemption rules, production-related tax benefits, personal property and asset classifications, and local business taxes.
    View Case Study

  • Aerospace and Defense – managing highly regulated SALT rules around R&D, manufacturing, supply chain logistics, government contracting, intercompany transfers, multi-jurisdictional sales, and emerging technology.
    View Case Study

  • Retail and E-commerce – addressing marketplace facilitator laws, nexus and compliance issues, and audit defense strategies.

  • Hospitality, Food, and Beverage – lessening the layered and location-specific state and local tax issues (e.g. sales, hotel occupancy, excise, mixed beverage, personal property, business license and local taxes).
    View Case Study

  • Real Estate and Construction – leveraging exemption strategies, understanding contractor tax responsibilities, and reviewing subcontractor bid compliance.
    View Case Study

  • Financial and Professional Services – supporting back-office teams with business license, gross receipts, and indirect tax challenges.
    View Case Study

Regardless of your industry, GSE acts as an extension of your tax department providing deep expertise, accurate insights, and actionable recommendations that reduce tax risk and accelerate results.

Tax Consulting

Project Management

Management Consulting

Support Services

Clients We Work With

Our Solutions

Enhance Tax Compliance

Keep businesses compliant with state and local tax laws and regulations to control cost and represent their interests during tax audits to drive business value.

  • Provide tax compliance services, including fixed asset reviews
  • Provide audit readiness and defense
  • Manage tax compliance projects, including M&A due diligence and integration

Mitigate Financial Risk

Evaluate and identify strategic tax savings on projects to enhance bottom-line results and protect profit margins.

  • Recognize retroactive opportunities to generate refunds
  • Address tax policy, advocacy, valuations and appeals, and dispute resolution issues to ensure clients pay only their fair share of taxes
  • Ensure clients realize the full benefits of allowable tax exemptions, credits and incentives, and tax abatements
  • Conduct a property tax value review for overvaluation and appeal opportunities

Expand Technology

Provide project management services to strengthen financial systems.

  • Review existing tax decision software models for configuration accuracy and to ensure proper tax handling
  • Provide automation support when implementing customized tax decision software models

Team of Experts

We have partnered with business owners to provide exceptional services throughout all of North America.

Strategic Alliance Team

Gwendolyn Evans

GSE is The State Tax Experts in the areas of sales and use, business license, excise, and other indirect taxes. The firm delivers customizable multi-state and local tax solutions to its clients.

Randy Ellison

Cambridge Tax is your business personal property and real estate tax experts. The firm has developed a tax tool that allows for comprehensive insight to all rules, laws, and regulations for every state that imposes taxes on real and personal property.

Jason Brown, Partner

Advantous Law focuses exclusively on state and local tax legal matters. The firm provides legal opinions on complex tax matters and, when litigation is necessary, handles each stage of the litigation process, from administrative tribunals through the courts.

Kevin Keane

Directed Action supports C-level executives on their most critical projects. They partner with clients to enable, support, and achieve strategic transformation.

Diverse Organization of Firms

An affiliate organization of NABA, DOF members are minority owners of CPA and Professional Services firms. The member firms provide a variety of accounting, tax, finance and consulting services to corporations and small businesses, government, nonprofit organizations and individuals both nationally and globally.

Meet Your Business Connector

Gwendolyn (Gwen) Standberry Evans, Founder & CEO

With over 30 years of experience spanning state government, Fortune 500 corporations, and entrepreneurial leadership, Gwen is a force in the field of multistate and local taxation.

She has led tax strategy, compliance initiatives, and legislative policy execution, translating complex regulatory frameworks into practical business solutions. Her leadership has helped companies minimize tax exposure, manage audit risk, and unlock tax-saving opportunities across multiple jurisdictions.

As the visionary behind GSE – The State Tax Experts, she has built a firm that acts as a strategic extension of internal tax teams offering results-driven support to mid-size and large companies navigating growth, change, or compliance complexity.

Known for her ability to blend policy insight with operational execution, she brings a rare mix of public and private sector expertise to every engagement. She speaks the language of CFOs, understands the pressure of audit timelines, and thrives in environments where tax strategy must align with broader business goals.

  • Nationally Certified by the Women’s Business Enterprise National Council (WBENC), Women’s Business Council – Southwest, 2023 to current
  • Nationally Certified by the Dallas/Fort Worth Minority Supplier Development Council, 2021 to current
  • Small Business Enterprise Certification, 2021 to current
  • Texas Historically Underutilized Business (HUB) Certified, 2021 to current
  • Certified Member of the Institute for Professionals in Taxation
  • Diverse Organization of Firms Executive Board, 2020 to current
  • YMCA of Metropolitan Dallas Board of Directors, 2013 to 2019
  • Trumpets4Kids Foundation Board of Directors, 2011 to 2015
  • Institute for Professionals in Taxation Board of Governors, 2009 to 2012 and 2007 to 2008
  • Raytheon Finance Shared Services Diversity Council, 2007 to 2011
  • A & G Evans Management, Inc. Board of Directors, 2000 to 2010
  • Nubian Queens Investment Club Board of Directors and President, 1995 to 2005
  • Institute for Professionals in Taxation (IPT)
    • Chair of University Relations Committee, 2015 to 2024
    • Member of Annual Conference Property Tax Committee, 2021
    • Member of Outreach Committee, 2019 to 2021
    • Chair of Mentoring Committee, 2012 to 2014
    • Co-Chair of Advanced Sales and Use Tax Academy, 2012 to 2013
    • Member of Advanced Sales and Use Tax Academy, 2003 to 2011
  • Texas Taxpayers and Research Association (TTARA)
    • Member of Tax Policy Committee, 2011 to 2020
  • Louisiana Association of Tax Administrators (LATA)
    • Member of Industry Committee, 2013 to 2019
  • State of Texas
    • Member of Texas Aerospace and Aviation Advisory Committee, 2009-2013 (appointed by Governor Rick Perry)
    • Member of Texas Comptroller’s Tax Policy Committee, 2003 to 2006
  • Interstate Tax Corporation
    • Speaker at Annual Sales & Use Tax Planning Conference, 2015 to current. Topic: Ethics & Managing the Sales and Use Tax Function and Preparing for Audits and Litigation
    • Speaker at Advanced Sales and Use Tax Conference, 2018 to current.  Topic: Ethics and Procedural Issues
  • Institute for Professionals in Taxation (IPT)
    • Speaker at IPT Annual Conference, 2024. Topic: Professional Ethics
    • Instructor and Breakout Facilitator at Sales and Use Tax School II, 2018 to 2022. Topics: Advanced Construction Contracting and Tax Planning
    • Session Leader/Facilitator at Advanced Sales and Use Tax Academy, 2013, 2008, 2005, and 2003
    • Instructor and Breakout Facilitator at Sales and Use Tax School II, 2009 to 2013. Topic: Tax Planning
    • Instructor and Breakout Facilitator at Sales and Use Tax School I, 2005 to 2008.  Topic: Contracting
    • Speaker at Sales and Use Tax Symposium, 2004
  • Council on State Taxation (COST)
    • Speaker at Great Issues Conference, 2006. Topic: Tax Planning when Partnering with Corporate Government Affairs.

Ask the Expert: State & Local Tax
Have a quick SALT question or need expert insight?

Submit Your Question here

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Note: Legally incorporated as Standberry Enterprises, Inc.
Doing Business As (DBA): GSE – The State Tax Experts

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