Welcome to HDM Tax Group HDM Tax Group, based in Hackensack, NJ, provides a full range of accounting, bookkeeping, consulting, outsourcing, payroll and business services, either in your facility or at our location. We can provide qualified accounting professionals who can ensure that your financial records are maintained correctly and accurately. Our bookkeepers can also assist in setting up and training your staff on the financial systems that you might be using or installing, such as QuickBooks or other legacy systems. We work with you to ensure that your personal or business processes are conducted in a manner that guarantees ongoing integrity in your financial transactions.