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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Blog PostDiscover seven e-commerce steps where tax errors happen—and how a tax engine protects your business throughout.
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Blog Post
Pushing the Boundaries of Tax Technology – Together at Vertex Exchange
Vertex CEO David DeStefano explores the forces shaping innovation at Vertex Exchange. -
Blog Post
Honoring Innovation: Vertex Partner Awards 2025 Winners
Meet the 2025 Vertex Partner Award winners driving innovation in global tax technology.