Christina Phillips digs into Payroll with Payroll and Tips (Run Screaming Away, NOW!). Frankly Christina, it’s not fair to compare payroll to Sales and Use Tax. Sales and Use tax (as codified in the U.S.) is way more screwed up than payroll.
Dynamics GP Land: Payroll and Tips
Payroll & HRTips & Hidden Features
Archived post from 2011. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.