ADP Study Guide 2026
Everything you need to pass the ADP exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 ADP Exam Format at a Glance
📚 ADP Topics to Study (22)
✍️ Sample ADP Questions & Answers
1. What is a W-2c and when must it be issued?
Form W-2c corrects previously filed W-2 information and must be issued whenever errors in wages, taxes, or other reportable items are discovered after the original W-2 was furnished.
2. What is the Electronic Federal Tax Payment System (EFTPS) and how does it relate to ADP?
EFTPS is the IRS's official electronic tax payment system, and ADP SmartCompliance uses it to make timely federal tax deposits on behalf of client employers.
3. What is an 'IP allowlist' in ADP access security and how does it protect the payroll system?
Configuring an IP allowlist in ADP limits system access to trusted network addresses, reducing the risk of unauthorized access from external or unrecognized locations.
4. What is a 'Creditor Garnishment' also commonly referred to as in payroll?
A creditor garnishment is also called an income execution, which is a court order directing an employer to withhold a portion of an employee's wages to pay a debt owed to a creditor.
5. In ADP, what is a 'missed punch exception' and how should it be resolved?
Missed punch exceptions in ADP alert managers that a time record is incomplete; the manager or payroll administrator must manually enter the correct punch time to complete the record.
6. What is a payroll internal audit and which ADP reports are most useful for conducting one?
A payroll internal audit uses ADP reports like the Audit Trail, Payroll Register, New Hire, and Terminated Employee reports to verify data integrity, authorization, and compliance.