Form W-4 Essentials: Ensuring Accurate Employee Withholdings in 2026

Form W-4 Updates Patrick A Haggerty HRCPE

Form W-4 Essentials: Ensuring Accurate Employee Withholdings in 2026

Date: September 25, 2026 | Time: 01:00 PM (ET)
Duration: 90 Minutes | Speaker: Patrick A Haggerty, EA
Certification: SHRM & HRCI Credit – 1.5

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The Form W-4 (Employee Withholding Certificate) determines the federal income tax employers must withhold from employee paychecks. Major IRS updates changed how withholdings are calculated—transitioning away from withholding allowances toward complex calculations involving multiple jobs, dependents, non-wage income, and new deductions such as qualified tips and overtime introduced under the OBBBA.
Managing both legacy pre-2020 forms and modern 2020–2026 W-4 submissions can complicate payroll processing. Utilizing IRS Publication 15-T worksheets and the IRS Income Tax Withholding Assistant is essential for accurate compliance.
In this practical, live webinar led by tax expert Patrick A. Haggerty, EA, you will learn how to accurately calculate withholdings across all W-4 versions, resolve invalid submissions, handle special non-resident alien rules, and stay compliant with IRS tax laws.

Learning Objectives

  • Master the legal requirements and calculations for 2026 Form W-4 compliance.
  • Calculate federal income tax withholding for both current and pre-2020 W-4 forms.
  • Navigate IRS Publication 15-T tax tables and the Income Tax Withholding Assistant for Employers.
  • Identify invalid, incomplete, or questionable W-4 submissions and manage lock-in letters.
  • Apply new OBBBA tax deduction rules for qualified tips and overtime.
  • Comply with non-resident alien withholding rules, electronic W-4 standards, and record retention requirements.

Why You Should Attend

Because legacy employees can leave prior W-4 forms active indefinitely, payroll teams must maintain systems that support two entirely different tax calculation methods. Attending this session ensures your organization avoids costly IRS penalties, miscalculations, and reporting errors.

Key Topics Covered

  • W-4 Form Mechanics: Line-by-line review of the 2026 W-4 and legacy forms.
  • IRS Worksheets & Tools: Practical walkthroughs using Publication 15-T and IRS calculation tools.
  • Special Tax Scenarios: Managing non-resident aliens, lock-in letters, and state withholding.
  • Compliance & Audit Protection: Penalty structures, electronic signature rules, and record retention best practices.

Who Should Attend

  • Payroll Professionals & Service Providers
  • Tax Compliance Officers, Auditors & Public Accountants (CPA/EA)
  • HR Managers & Employee Benefits Administrators
  • Business Owners & Financial Directors

Speaker

Patrick A Haggerty, EA

Patrick Haggerty is a tax practitioner, author, and educator. His work experience includes non-profit organization management, banking, manufacturing accounting, and tax practice. He began teaching accounting at the college level in 1988.

He is licensed as an Enrolled Agent by the U. S. Treasury to represent taxpayers at all administrative levels of the IRS and is a Certified Management Accountant. He has written numerous articles and a monthly question and answer column for payroll publications. In addition, he regularly develops and presents webinars and presentations on a variety of topics including Payroll tax issues, FLSA compliance, and information return reporting.

certification

Hrcpe is recognized by SHRM to offer Professional Development Credits (PDCs) for the SHRM-CPSM or SHRM-SCPSM. This program is valid for 1.5 PDCs for the SHRM-CPSM or SHRM-SCPSM. For more information about certification or recertification, please portal.shrm.org.

This Program has been approved for 1.5 HR (General) recertification credit hours toward aPHR™, aPHRi™, PHR®, PHRca®, SPHR®, GPHR®, PHRi™, and SPHRi™ recertification through HR Certification Institute®. (HRCI®).

Hrcpe Courses and Webinars or any Education published “Articles & Materials” strictly follow the standards and guidelines of the Professional Credit / CEU Providers and Well well-researched before publishment.

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Form w4 FAQ

  1. What major changes affect the 2026 Form W-4?
    The 2026 Form W-4 includes updated withholding calculations, new OBBBA-related deduction adjustments for qualified tips and overtime, and updated withholding tables.
  2. How did OBBBA change withholding for tips and overtime?
    Employees may deduct qualifying tips and the premium portion of qualifying overtime when calculating federal income tax withholding. These deductions can be reflected on Step 4(b) of Form W-4.
  3. Do existing employees need a new 2026 Form W-4?
    No. Existing W-4s generally remain valid. A new form is needed when a new employee starts or an employee wants to change their withholding.
  4. How are pre-2020 and current W-4s handled?
    Payroll systems must support both methods: the allowance-based method for older W-4s and the updated calculation method for 2020–2026 W-4s.
  5. What is IRS Publication 15-T?
    Publication 15-T provides the IRS formulas, tables, and worksheets used to calculate federal income tax withholding.
  6. How are Non-Resident Aliens (NRAs) handled?
    NRAs must follow special W-4 withholding rules and use the applicable IRS withholding procedures and tables.
  7. What is an invalid W-4?
    A W-4 may be invalid if required information or signatures are missing or the form is improperly altered. Employers should follow IRS rules for withholding until a valid form is received.
  8. What is an IRS Lock-In Letter?
    A Lock-In Letter tells an employer how much federal income tax to withhold. Employers must follow the IRS instructions and cannot accept changes that reduce withholding below the required amount.
  9. What are the requirements for an electronic W-4?
    An electronic W-4 system must provide secure authentication, required W-4 information and statements, a valid electronic signature, records, and the ability to reproduce the form if requested by the IRS.
  10. Do OBBBA tip and overtime deductions reduce FICA taxes?
    No. These provisions affect federal income tax only. Social Security and Medicare taxes generally continue to apply to taxable wages, including qualifying tips and overtime.

 

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