Since 1971, A D Computer has provided comprehensive payroll and payroll tax filing services to businesses of all types and sizes throughout the United States. We are uniquely structured to provide advanced payroll processing solutions supported by responsive, personalized customer service. As testimony to the effectiveness of our staff's award winning service and customer support ethic, A D Computer has earned national recognition in the following categories: ACCURACY RELIABILITY PROMPT RESPONSE REASONABLE FEES Well-served customers are well-satisfied customers. This is supported by the fact that A D Computer's customer retention ranks among the very highest in the industry. We earn the trust of thousands of companies, payday after payday. A D continues to grow without compromising the founding value that drives it's growth: We invite you to explore the reasons why A D Computer is distinctly different from other payroll providers and why so many companies choose A D Computer as their payroll and tax filing provider.