New! Never miss critical tax updates with Webhooks by Symmetry

The payroll tax infrastructure for software & payroll platforms.

Symmetry Software offers a fully integrated suite of payroll tax APIs and software tools that help companies solve complex tax compliance issues and allow service providers to build applications across the entirety of the payroll process.

Powering Every Paycheck.

Talk data to me.

  • 64+ million
    employees’ paychecks calculated each year

  • 25 million
    withholding forms processed in 2022 alone

  • 3.32 milliseconds
    average tax engine speed per calculation

Powerful alone. Better together.

Success comes in all sizes. From high growth businesses to established enterprises, you’re in good company.

Read client stories

Speak to an expert to see how embedding the correct payroll technology to solve tax compliance issues across the payroll process can significantly impact your business.