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Your Online Payroll Compliance & Research-Ready Library

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The Payroll Source®

The Payroll Source® is the payroll industry's most trusted text. It includes federal withholding tables, forms, and instructions; a glossary of common payroll terms and acronyms; review questions and exercises; and CPP exam preparation tips, review questions, and practice exams. Content is updated on a regular basis.

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Federal Payroll Tax Laws & Regulations

Federal Payroll Tax Laws & Regulations contains payroll-related sections of the Internal Revenue Code and Internal Revenue Service regulations. Content is updated on a regular basis.

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Federal Payroll Non-Tax Laws & Regulations

Federal Payroll Non-Tax Laws & Regulations contains payroll-related sections of federal non-tax laws and regulations from the U.S. Code and Code of Federal Regulations. Content is updated on a regular basis.

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APA's Guide to State Payroll Laws

APA's Guide to State Payroll Laws contains information on payroll-related laws and regulations in the states, the District of Columbia, and Puerto Rico. This information includes wage and hour issues, payment of wages, income tax withholding requirements, and more. Content is updated on a regular basis.

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PayState Update

PayState Update is a biweekly electronic newsletter covering state and local payroll compliance news and issues. An archive of 2018 issues is also available.

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Payroll Currently

Payroll Currently is a monthly electronic newsletter covering payroll compliance news and issues. Features include Inside Washington – the latest from the APA’s Government Relations office. An archive of 2018 issues is also available.

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APA's Guide to Local Payroll Taxes

APA's Guide to Local Payroll Taxes provides information on the different types of local payroll taxes that employers must withhold, deposit, and report.

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The Payroll Source Study Guide, 2019-2020

The Payroll Source Study Guide, 2019-2020, is the complete 2019 edition of The Payroll Source® for those studying for CPP or FPC exams administered from September 16, 2019, through September 15, 2020.

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APA's Guide to Federal and State Garnishment Laws contains the information needed to process various wage withholding orders, featuring easy-to-read state charts covering all aspects of child support withholding orders and creditor garnishments.

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APA's Guide to Federal and State Wage & Hour Laws provides information on federal and state laws governing minimum wages, overtime, exempt vs. nonexempt employees, child labor restrictions, and much more.