DuCharme, McMillen & Associates

DMA solves corporate tax challenges for companies throughout the US and Canada by minimizing their taxes, enhancing the efficiency of their tax administration through industry-leading technology solutions, and managing their tax compliance obligations.

Vertex Partner Alliances Ecosystem Hero

Working with DuCharme, McMillen & Associates


Whether you have a specific internal implementation issue to resolve or need comprehensive turnkey services, DMA's technical and tax teams are prepared to tackle your project on time and on budget. DMA has extensive experience with Vertex implementation and Vertex integration projects including:

  • Vertex Sales Tax L Series, Q Series, and O Series services
  • Vertex Communication Tax Q Series
  • Integration Services: E-Commerce, SAP, Oracle, Lawson, JD Edwards, and other systems

System Optimization

Over time, demands on a business change and the current installation of your transactional tax software may no longer be aligned with the needs of the business. DMA regularly assists clients with the identification of performance gaps leading to the formulation and execution of a plan to not only bridge these gaps but also create a dynamic environment that can readily adapt to future changes.

Optimize your Vertex systems with:

  • On-site tax system assessments, business readiness reviews, and Vertex product training
  • Custom Tax Integration API Development
  • E-Commerce Development and Integration Services
  • Tax/Legacy Data Conversion Services

Productivity Tools

DMA has developed a collection of aftermarket utility software applications specifically designed to complement your Vertex system. These utilities are used to extend the reach of your system into additional areas of compliance, internal reporting, audit defense, file and data management, as well as the automation of your system implementation.

Tax Services

Clients can select from a variety of U.S. sales and use tax and Canadian commodity services, including:

  • Overpayment reviews and refund filing | Audit services, including managed audits and audit assessment reduction | Compliance services, including return preparation, return filing, and tax bill payment | Managed compliance agreement services | Development of direct pay percentages | Compliance software consulting | Strategic consulting, including research and planning | Training | Underpayment reviews