Grant McCarthy Group
GMG focuses on helping clients with all business tax practices procedures, compliance, and multi-jurisdictional tax complexities. We assess situations to help our clients reduce their tax burdens and maximize their cash flow.

Providing technology enabled services to simplify tax complications and provide financial benefits.
GMG is committed to ensuring our clients only pay their fair share of tax. We leverage Vertex to deliver real time savings to clients and reduce the need for audits to determine areas of exposure or overpayment. Our services deliver quantifiable financial value.
Benefits of Our Partnership
Machine learning under the direction of experienced tax professionals.
Correction of ERP and tax determination engine rules reduces overpayments and underpayments.
Maintained by tax professionals utilizing technology to deliver streamlined results.
Resources for You
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InfographicExplore 5 reasons mid-market companies are upgrading to Vertex to scale smarter and simplify compliance.
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At-a-Glance: Why Switching Tax Engines Is Worth the Effort for Enterprises
Why switching tax engines to Vertex is worth it—see how we help enterprises scale and simplify tax. -
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Vertex & Oracle Customers Share Their Success Stories
Transform your business for improved accuracy and simplified operations.