Symmetry Tax Engine vs. ADP TotalSource

The leading gross-to-net calculation software for payroll. The Symmetry Tax Engine® (STE) is a powerful gross-to-net calculation engine to build or enhance a payroll platform, embed payroll into an existing application, and increase compliance and accuracy. The Symmetry Tax Engine® accounts for federal, state, and local payroll taxes — both withholding and latent employer taxes — for over 7,400 taxing jurisdictions and U.S. territories. Employer taxes and multi-state processing are accounted for as well. STE covers all 50 states, U.S. territories including Puerto Rico, and Canada.

ADP TotalSource is a Certified Professional Employer Organization (CPEO) that helps businesses manage HR, payroll, benefits, compliance and talent management through a single solution. As an IRS-certified CPEO and ESAC-accredited PEO, ADP TotalSource combines technology with hands-on HR expertise to help organizations navigate the complexities of managing employees. Businesses can streamline processes across the employee lifecycle, from hiring and onboarding to payroll, benefits administration, performance management and workforce planning.