For over 70 years, GSG has met the needs of our clients with innovative expertise in complex financial solutions such as forensic accounting and business valuations. We are a Maryland-based full-service certified public accounting firm offering a wide range of accounting and consulting services to clients of all sizes. Although we have grown through the years, we still employ the traditional business practices of a small company. We invest in every client, always deliver solid advice and solutions, and provide unparalleled client service. Simple rules with proven results.