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; IRS employer tax guides (Publications 15, 15-A, and 15-B); 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 2017 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 2017 issues is also available.

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The Payroll Source Study Guide, 2018-2019

The Payroll Source Study Guide, 2018-2019, is the complete 2018 edition of The Payroll Source® for those studying for CPP or FPC exams administered from September 16, 2018, through September 15, 2019.