Pay stub errors happen more often than you think. Here are the 8 most common mistakes and exactly how to correct each one.
By ExpertPaystubs Editorial Team. Published 2026-03-10
A study by the American Payroll Association found that payroll errors affect 1-8% of all payroll runs. That translates to millions of workers receiving incorrect pay stubs every year. Some errors are minor inconveniences; others can trigger IRS audits or lawsuits.
Here are the 8 most common pay stub errors and how to fix each one.
1. Incorrect Tax Withholding
The Problem: Federal or state income tax calculated wrong — usually from an outdated W-4 or incorrect filing status.
Signs to Watch For:
- Significantly more or less tax withheld than colleagues with similar pay
- Getting a $3,000+ refund (too much withheld) or owing $1,000+ (too little)
How to Fix It:
- Submit an updated Form W-4 to your employer
- Use the IRS Tax Withholding Estimator at irs.gov/W4App
- If you're generating your own stubs, use a tool with current 2026 tax tables
2. Wrong Pay Rate
The Problem: Hourly rate or salary doesn't match your employment agreement.
Common Causes:
- Raise not applied in the system
- Data entry error during onboarding
- Incorrect conversion between annual salary and per-period amount
How to Fix It:
- Compare your stub to your offer letter or latest raise notification
- Report the discrepancy to HR/payroll immediately
- Request retroactive correction for all affected pay periods
3. Missing or Incorrect Overtime
The Problem: Overtime hours not calculated, wrong rate applied, or OT not paid at all.
Legal Requirements:
- FLSA requires 1.5× for hours over 40/week (non-exempt employees)
- California requires daily OT after 8 hours and double-time after 12
- Some states have additional rules
How to Fix It:
- Keep your own records of hours worked
- Compare your time records against the stub
- File a complaint with the Department of Labor if employer refuses to correct
4. Pre-Tax Deduction Errors
The Problem: 401(k) contribution percentage wrong, health insurance premium incorrect, or HSA deduction not applied.
Impact: Incorrect pre-tax deductions affect both your current take-home pay AND your taxable income calculation.
How to Fix It:
- Review your benefits enrollment confirmation
- Compare deductions against your most recent benefits statement
- Contact HR/benefits department for corrections
- If generating your own stubs, double-check deduction amounts against your actual benefit costs
5. Social Security Wage Base Errors
The Problem: Social Security tax (6.2%) continues being withheld after you've exceeded the annual wage base ($184,500 for 2026).
Who This Affects: High earners, especially those with multiple jobs or mid-year job changes.
How to Fix It:
- Monitor your YTD Social Security wages each pay period
- Alert payroll when you're approaching the cap
- If you have multiple employers, claim excess on your tax return (Form 1040, Schedule 3)
6. Incorrect Employee Information
The Problem: Wrong name spelling, old address, incorrect SSN digits.
Why It Matters:
- SSN errors can cause W-2 processing failures
- Address errors affect state tax withholding if you've moved across state lines
- Name discrepancies can cause issues with background checks and loan applications
How to Fix It:
- Review personal info section on every stub
- Submit corrections to HR immediately
- Verify SSN matches your Social Security card exactly
7. Missing Hours or PTO
The Problem: Hours worked not fully accounted for, or PTO/vacation balances incorrect.
Common Causes:
- Timesheet submission errors
- System glitches during pay period cutoff
- Manager approval delays
How to Fix It:
- Keep independent records of your hours (even a simple phone note)
- Submit corrections before the payroll cutoff deadline
- Track your PTO independently and compare quarterly
8. Year-to-Date (YTD) Discrepancies
The Problem: YTD totals don't add up when you sum individual pay periods.
Why It Matters: YTD errors compound over time and can cause your W-2 to be incorrect, potentially triggering IRS notices.
How to Fix It:
- Spot-check YTD totals every quarter
- Add up your individual period amounts and compare
- Report discrepancies immediately — they're harder to fix after year-end
Prevention Is Better Than Correction
The best way to avoid pay stub errors:
- Use automated tools — Manual calculations invite human error
- Review every stub within 48 hours of receiving it
- Keep independent records of hours, rates, and deductions
- Update your W-4 after any life change
- Generate professional stubs using current tax tables
Generate Error-Free Pay Stubs
ExpertPaystubs eliminates calculation errors with our automated 2026 tax engine. All federal, state, and FICA calculations are handled automatically.