• Is Your Payroll System Calculating Pay Correctly? How to Validate Gross-to-Net Payroll
  • Is Your Payroll System Calculating Pay Correctly? How to Validate Gross-to-Net Payroll

    • Speaker : Dayna Reum
    • Session Code : DRSEP1526
    • Date : 15th September 2026
    • Time : 1:00 PM Eastern Time / 10:00 AM Pacific Time
    • Duration : 75 Mins

Overview

 

Payroll systems can process thousands of calculations quickly and consistently—but consistency does not necessarily mean the calculation is correct. A system configured with the wrong overtime rule, deduction treatment, tax setting, garnishment limit, or earning code can produce an incorrect paycheck that looks completely normal. And once that error is built into the system, it can be repeated across employees and pay periods before anyone realizes something is wrong.

 

Recent wage-and-hour enforcement illustrates the risk. Employers continue to face significant back-pay exposure over issues such as regular-rate and overtime calculations—areas where one incorrect payroll treatment can affect hundreds or even thousands of paychecks. At the same time, payroll teams are dealing with updated withholding requirements, Form W-4 changes, changing tax limits, different treatment of pre-tax and after-tax deductions, garnishment orders, tax levies, child support limits, and continuing developments involving student-loan collections.

 

This creates an important question for every payroll professional: If the system produces a number, can you independently determine whether that number is right?

 

Payroll technology performs the calculation it has been configured to perform. Payroll professionals still need to understand what should happen behind that calculation. When a new earning code, benefit deduction, tax change, garnishment order, or system enhancement is introduced, someone needs to be able to calculate the expected result, compare it with the system output, recognize a discrepancy, and determine where the problem occurred.

 

This session will take participants through the calculations and federal rules behind the gross-to-net paycheck. Attendees will examine overtime and the regular rate of pay, minimum wage and tipped employees, pre-tax and after-tax deductions, Section 125 deductions, garnishments and child support limits, tax levies, student-loan considerations, Form W-4, federal income tax withholding, and FICA calculations.

 

Participants will leave with more than an understanding of payroll math. Drawing on Dayna’s more than 17 years of hands-on payroll experience, current payroll operations leadership, and extensive experience teaching payroll professionals, they will have the foundation needed to test payroll-system functionality, investigate questionable results, validate system calculations, and know when a paycheck deserves a closer look rather than simply accepting the number the system produces.

 

Areas covered in the session:

 

  • Overtime rules for calculation
  • Regular rate of pay
  • Minimum wage
  • Tipped Employees
  • Benefits Deductions
  • Before tax and after tax deductions
  • Cafeteria 125 Deductions
  • Garnishment Deductions
  • Child support limits and beyond
  • Federal and State Tax Levies
  • Student loan updates
  • Creditor Garnishments
  • Employer Deductions
  • Taxes
  • Form W-4
  • Federal Tax Calculations
  • FICA Tax calculation

 

To support implementation of the concepts discussed during the webinar, attendees will receive the following handouts:

 

  • Payroll Calculation Validation Playbook: From Gross Pay to Net Pay
  • Payroll System Testing & Error Investigation Casebook

 

Why Should You Attend?

 

Payroll systems can automate complex calculations, but they cannot replace the payroll professional’s ability to recognize when something is wrong. This session will help you understand the calculations behind the system so you can verify results instead of relying solely on automated output.

 

You will gain practical insight into overtime, regular rate of pay, deductions, garnishments, tax levies, Form W-4, federal withholding, FICA, and other elements that affect gross-to-net pay—giving you a stronger foundation for testing system changes and investigating questionable pay results.

 

With Dayna’s hands-on payroll operations experience guiding the session, you will learn how these rules and calculations apply in real payroll situations and leave better prepared to identify errors before they affect employees, create compliance issues, or multiply across multiple pay periods.

 

Who Will Benefit?

 

This webinar is designed for payroll professionals responsible for processing, reviewing, testing, or validating employee pay and payroll-system calculations. It will also benefit professionals who oversee payroll compliance, payroll technology, taxation, and gross-to-net accuracy, including those include:

 

  • Payroll Directors
  • Payroll Managers
  • Payroll Operations Managers
  • Payroll Supervisors
  • Payroll Team Leaders
  • Payroll Administrators
  • Payroll Analysts
  • Payroll Specialists
  • Payroll Coordinators
  • Payroll Systems Managers
  • Payroll Systems Analysts
  • Payroll Systems Administrators
  • Payroll Compliance Managers
  • Payroll Compliance Specialists
  • Payroll Tax Managers
  • Payroll Tax Specialists
  • HRIS Managers with Payroll Responsibility
  • HRIS/Payroll Systems Analysts
  • HR Managers with Payroll Oversight
  • Finance or Accounting Managers Responsible for Payroll


Dayna is currently the Director of Payroll Operations at a major medical center in Chicago.  Dayna has been heavily involved in the payroll field over 17 years.  Starting as a payroll clerk at a small Tucson company, Dayna moved on to be a Payroll Team Leader at Honeywell Inc. During Dayna’s time at Honeywell she obtained her FPC (Fundamental Payroll Certification) through the American Payroll Association.  She also received several merit awards for Customer Service and Acquisitions and Divestitures.

 

Dayna is no stranger to teaching she has taught at the Metro Phoenix American Payroll Association meetings and at the Arizona State Payroll Conference.  Topics including Payroll Basics, Global/Cultural Awareness, Immigration Basics for the Payroll Professional, Multi-State and Local Taxation and Quality Control for Payroll, International and Canadian payroll.

 

Dayna has her CPP (Certified Payroll Professional) through the APA.  She also serves on the National American Payroll Association on the National Strategic Leadership Task Force, Government Affairs Task Force (PA Local tax subcommittee).  Dayna has received a Citation of Merit for her service along with being a Gold Pin member of the APA.

 

Besides her payroll accomplishments Dayna is certified in HR hiring and firing practices and is a Six-Sigma Greenbelt.

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Tags: Payroll, Payroll Compliance, Payroll System Accuracy, Payroll Calculations, Gross-to-Net Payroll, Payroll System Testing, Payroll Validation, Payroll Errors, Overtime, Regular Rate of Pay, Payroll Deductions, Garnishments, Child Support, Tax Levies, Form W-4, Federal Withholding, FICA, Payroll Tax, Payroll Training, Payroll Operations, dayna reum, september 2026,