2.1 Official Compliance Sources and Research Method

Why source hierarchy matters

Compliance and research is a 17% FPC domain in the PayrollOrg outline effective through September 4, 2026, and it also supports wage-hour, tax, reporting, audit, and accounting questions in other domains. Payroll work changes when a law, agency instruction, filing due date, withholding method, or state rule changes. The exam therefore tests whether you can recognize the best source and the correct payroll action, not whether you can repeat a loose rule of thumb.

Use a source hierarchy. Start with the exam blueprint for scope, but do not treat a commercial summary as the law. For federal payroll tax administration, use IRS publications, forms, instructions, notices, and the Internal Revenue Code when needed. For wage-hour questions, use the Fair Labor Standards Act, Department of Labor Wage and Hour Division fact sheets, regulations, and official state labor-agency sources. For state and local payroll, use state revenue agencies, state labor departments, city ordinances, unemployment agencies, and official paid-leave program sites.

Payroll research workflow

This workflow prevents the classic compliance trap: finding a true statement that applies to the wrong date, wrong jurisdiction, or wrong worker group. A federal rule may set a floor, while a state or city rule may require more pay, faster final wages, a different pay statement, or an additional payroll tax.

Official sources FPC candidates should know

PayrollOrg preparation guidance identifies DOL Wage and Hour Division fact sheets for overtime, hours worked, recordkeeping, and white-collar exemptions as FPC study materials. It also points candidates to IRS Publication 15, Publication 15-T, Publication 15-A, Publication 15-B, and Publication 525. That source list is a clue: the FPC expects payroll professionals to know which official document answers which payroll question.

Use IRS Publication 15 for employer federal payroll tax duties such as employment tax records, electronic deposits, deposit schedules, Form 941 relationships, lock-in letters, and core withholding obligations. Use DOL Fact Sheet #23 for the federal overtime rule, workweek concept, weighted-average regular rate, and common traps such as unauthorized overtime. Use DOL Fact Sheet #21 for FLSA recordkeeping data and retention periods. Use DOL Fact Sheet #17A when a question asks whether salary plus a job title creates an overtime exemption. It does not; the salary basis, salary level, and duties tests must be met.

Payroll example: researching a deposit penalty notice

A payroll specialist receives an IRS notice saying a federal tax deposit was late. The weak answer is, “Payroll deposited every payday, so it should be fine.” The stronger FPC answer is to pull the pay date, Form 941 liability, lookback-period deposit schedule, EFT confirmation, and IRS notice period. Publication 15 says the monthly or semiweekly schedule is based on liability during the lookback period, not on payroll preference or pay frequency. If payroll used the wrong schedule, the correction is a calendar/control failure, not just a funding issue.

Retention and calendar controls

Research does not end when the rule is found. Payroll must convert the rule into a calendar item, a retention requirement, or a system control. IRS Publication 15 says employers should keep employment tax records for at least four years after the tax due date or the date the tax is paid, whichever is later.

DOL Fact Sheet #21 gives a different FLSA lens: basic payroll records are generally retained at least three years, while wage-computation support such as time cards and wage-rate tables is kept at least two years. The practical payroll answer is to keep the longer applicable period when records serve multiple purposes, and to make the retention schedule specific enough for tax, wage-hour, benefits, garnishment, and state-law evidence.

A useful compliance calendar separates four dates: the employee pay date, the tax deposit date, the return or report filing date, and the record-retention disposal date. Those dates can be different even when they arise from the same payroll run.

Compliance traps

• Search-result trap: a current-looking article may summarize old law or omit the state exception.
• Date trap: a rate, wage base, or effective date may change by calendar year, exam window, state, or local ordinance.
• Filing-versus-deposit trap: sending cash and filing a return are separate duties with separate proof.
• Policy-versus-law trap: a company handbook can be more generous than law, but it cannot reduce statutory pay or tax duties.
• System-default trap: a vendor default is not evidence that the correct jurisdiction or employee status was applied.

For exam scenarios, answer like a payroll professional: identify the authoritative source, apply the rule to the facts, and name the documentation that would let an auditor reproduce the decision.