Comment by zsgoldberg

if you use Zenefits for HR/Benefits, they will know everything they need to determine your deductions and taxes. This makes it simple or them to run everything for you in 'self-driving' mode. All the changes you make in Zenefits are reflected in your payroll automatically

The custom experience where you can go in and configure things specifically for payroll without making those changes in Zenefits, that's the one they're charging for