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
-
VideoAutomate and simplify e-invoicing and periodic VAT reporting in a single solution with Vertex solutions.
-
Blog Post
Big Retail Innovations, Major Tax Compliance Implications
Pete Olanday’s takeaways from NRF 2025. -
Blog Post
25 for ’25: NRF’s Retail-Industry Trends Forecast
Pete Olanday assesses the tax compliance repercussions of NRF’s 2025 retail predictions.