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 PostSpain’s B2B e‑invoicing mandate is approaching. Understand scope, timelines, and what businesses need to know.
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Blog Post
France’s 2026 E-Invoicing Regulations Explained: Scope, Deadlines, and Penalties
France’s e‑invoicing mandate reshapes VAT compliance. Understand scope, timelines, and what businesses must do next. -
White Paper
Creating a Retail Experience that Optimizes Accuracy, Efficiency, and Consistency
Inconsistent tax across channels creates friction and risk. This white paper explains how real-time tax automation supports accurate pricing and unified retail experiences.