Symmetry Payroll Forms (SPF) API is designed to build out and help onboard employees for employment. They can accurately complete their federal, state, and local withholding forms with field- and form-level data validation.
With over 125 compliant online withholding forms, SPF includes every form involving employee withholding issued by federal, state, and local governments. This includes resident, nonresident, military spouse, and more. Forms submitted through SPF are 100% electronic as well as regulatory compliant and auditable for all tax jurisdictions. SPF also covers the U.S. and Canada through a unified schema and consistent endpoints.