Have you ever compared your final pay stub of the year with your Form W-2 and noticed that the amounts are different?
Perhaps your last pay stub shows $60,000 in year-to-date earnings, while Box 1 of your W-2 reports only $54,000.
Does that mean your employer made a mistake?
Not necessarily.
Understanding pay stub vs. W-2 differences is important because these documents report earnings differently.
A pay stub provides information about wages, taxes, deductions, and take-home pay for a particular pay period. Form W-2 summarizes annual wages and certain taxes for federal and state tax-reporting purposes.
Although the two documents are connected, their figures do not always match exactly.
This guide explains why your W-2 may show less income than your pay stub, how retirement contributions and health insurance affect taxable wages, which W-2 boxes matter, and how employees and employers can compare payroll records accurately in 2026.
What Is a Pay Stub?
A pay stub, also called a paycheck stub or earnings statement, is a document that provides details about an employee’s compensation for a specific pay period.
It generally explains how earnings were calculated and which taxes or deductions were taken from the payment.
Pay stubs commonly contain:
- Employee and employer information
- Pay period beginning and ending dates
- Payment date
- Hours worked
- Hourly rate or salary
- Regular earnings
- Overtime earnings
- Bonuses and commissions
- Gross pay
- Federal income tax withholding
- State and local taxes, where applicable
- Social Security and Medicare taxes
- Retirement contributions
- Insurance deductions
- Net pay
- Year-to-date earnings and deductions
A pay stub helps employees understand how their compensation was calculated.
Employers also use payroll records to track compensation, tax withholding, and other deductions.
What Does YTD Mean on a Pay Stub?
YTD means Year-to-Date.
It refers to the cumulative amount recorded from the beginning of the year through the pay period shown.
For example, a December pay stub might display:
| Payroll Item | Year-to-Date Amount |
|---|---|
| Gross earnings | $60,000 |
| Federal income tax withheld | $5,000 |
| Social Security tax withheld | $3,720 |
| Medicare tax withheld | $870 |
| Retirement contributions | $3,600 |
| Net pay | Varies with other deductions |
These figures help employees see the running totals for their compensation.
However, year-to-date gross earnings are not necessarily the same as federal taxable wages.
This is one of the main reasons pay stubs and W-2 forms can display different amounts.
What Is Form W-2?
Form W-2, Wage and Tax Statement, is an annual tax document employers provide to employees and file with the Social Security Administration.
It reports wages, certain taxable compensation, and tax withholding for the calendar year.
Employers use Form W-2 to report information such as:
- Federal taxable wages
- Federal income tax withheld
- Social Security wages
- Social Security tax withheld
- Medicare wages
- Medicare tax withheld
- Certain retirement contributions and benefits
- State and local wages and withholding
Employees generally use their W-2 information to prepare their annual federal and applicable state income tax returns.
Unlike a pay stub, which generally focuses on an individual payment and cumulative payroll activity, Form W-2 follows specific tax-reporting rules.
That difference is important.
Pay Stub vs. W-2: What Is the Main Difference?
The primary difference is the purpose of each document.
| Feature | Pay Stub | Form W-2 |
|---|---|---|
| Purpose | Explains payroll earnings and deductions | Reports annual wages and taxes |
| Frequency | Usually provided each pay period | Annually |
| Gross pay | Commonly displayed | Not necessarily displayed as a single gross-pay total |
| Net pay | Commonly displayed | Not reported |
| Federal taxable wages | May be displayed separately | Reported in Box 1 |
| Federal income tax withheld | Current period and often YTD | Annual total in Box 2 |
| Social Security wages | May be shown | Reported in Box 3 |
| Medicare wages | May be shown | Reported in Box 5 |
| Retirement contributions | May appear as deductions | Certain contributions reported in Box 12 |
| Primary use | Payroll records and earnings information | Annual tax reporting |
Both documents serve legitimate payroll and tax-reporting purposes, but they are not interchangeable.
Why Does My W-2 Show Less Income Than My Pay Stub?
Several common payroll situations can explain why the amounts differ.
1. Pre-Tax Retirement Contributions
One of the most common reasons is employee participation in a traditional 401(k) retirement plan.
Employees can choose to contribute part of their compensation to a traditional 401(k).
Generally, eligible pre-tax elective contributions reduce wages subject to federal income tax.
However, those same contributions are ordinarily still included in wages subject to Social Security and Medicare taxes.
For example:
An employee earns $60,000 during the year.
The employee contributes $3,600 to a traditional pre-tax 401(k).
Assuming no other adjustments:
Gross earnings: $60,000
Pre-tax 401(k) contributions: $3,600
Form W-2 Box 1: $56,400
The employee’s pay stub may correctly show $60,000 in annual gross earnings, while Box 1 reports $56,400.
This does not automatically indicate an error.
The difference is caused by the tax treatment of the retirement contributions.
The IRS explains that traditional pre-tax employee elective retirement contributions are generally excluded from Box 1 but included in Social Security and Medicare wages.
See the IRS retirement-plan contribution guidance.
2. Pre-Tax Health Insurance Premiums
Certain employee health insurance contributions may also reduce taxable wages.
For example, qualifying employee health insurance premiums paid through a Section 125 cafeteria plan may be excluded from federal taxable wages.
Depending on the arrangement, qualifying contributions may also be excluded from Social Security and Medicare wages.
Consider an employee whose annual gross pay is $50,000.
The employee has $2,400 in qualifying pre-tax health insurance contributions.
Assuming no other adjustments, the federal taxable wages may be:
$50,000 − $2,400 = $47,600
In this example, the pay stub may show $50,000 in gross earnings while Box 1 reports $47,600.
However, not every insurance deduction receives the same tax treatment.
The exact result depends on the benefit and payroll arrangement.
For additional information, see IRS Publication 15-B, Employer’s Tax Guide to Fringe Benefits.
3. Other Pre-Tax Benefits
Some other employee benefits may affect the calculation of taxable wages.
Depending on eligibility and the plan’s structure, these may include:
- Health flexible spending arrangements
- Certain dependent care benefits
- Qualifying health savings account contributions through cafeteria plans
- Certain transportation benefits
- Other eligible employer benefit arrangements
These deductions are not necessarily treated identically for federal income tax, Social Security, Medicare, and state tax purposes.
Consequently, a payroll deduction that reduces one taxable wage figure might not reduce another.
4. Taxable Benefits Not Included in Regular Cash Pay
Sometimes, the opposite situation occurs.
An employee’s W-2 may include compensation that does not appear in the same way as ordinary cash wages on a pay stub.
Certain employer-provided benefits are taxable.
Examples may include:
- Taxable personal use of an employer-provided vehicle
- Certain group-term life insurance benefits
- Taxable fringe benefits
- Certain employer-paid personal expenses
If a benefit must be included in taxable compensation, the employer generally reports its taxable value on Form W-2.
This can cause Box 1 to be higher than expected when compared with regular cash earnings.
5. Year-End Bonuses and Additional Compensation
Annual compensation may include payments outside an employee’s normal salary.
For example:
An employee receives:
- Regular wages
- An annual performance bonus
- Commissions
- Taxable supplemental compensation
These amounts may be included in Form W-2 even if the employee is only comparing the form with a particular pay stub that does not reflect the complete annual payment history.
It is important to compare the entire calendar year’s payroll records rather than only one isolated pay period.
Gross Pay vs. Taxable Wages: Why the Difference Matters
Gross pay generally refers to compensation earned before applicable payroll deductions.
Federal taxable wages represent compensation included in the federal income tax wage calculation under applicable tax rules.
The figures can differ because certain contributions and benefits receive preferential tax treatment.
For example:
| Item | Amount |
|---|---|
| Annual gross earnings | $60,000 |
| Traditional pre-tax 401(k) | −$3,600 |
| Qualifying pre-tax health benefits | −$2,400 |
| Taxable fringe benefit | +$600 |
| Federal taxable wages (Box 1) | $54,600 |
This simplified example illustrates how an employee can have $60,000 in annual gross pay but $54,600 in federal taxable wages.
It assumes that the retirement contribution is a qualifying traditional pre-tax contribution, the health benefit is excluded from federal income tax wages, and the fringe benefit is taxable.
Other payroll arrangements may produce different results.
Why W-2 Box 1, Box 3, and Box 5 May Be Different
A common source of confusion is that Form W-2 contains several different wage figures.
These boxes measure different taxable wage categories.
W-2 Box 1: Wages, Tips, and Other Compensation
Box 1 generally reports wages subject to federal income tax.
It includes certain wages, tips, bonuses, and taxable benefits.
However, qualifying traditional pre-tax retirement contributions and other allowable exclusions may reduce the amount.
W-2 Box 3: Social Security Wages
Box 3 reports wages subject to Social Security tax.
Unlike Box 1, it generally includes employee traditional pre-tax 401(k) contributions.
Box 3 is also subject to the annual Social Security wage base limit.
For 2026, the Social Security taxable wage base is $184,500.
This means Box 3 generally cannot exceed the applicable wage base for one employer’s reporting, apart from special reporting considerations.
W-2 Box 5: Medicare Wages and Tips
Box 5 reports wages subject to Medicare tax.
Like Social Security wages, Medicare wages generally include traditional pre-tax 401(k) contributions.
However, unlike Social Security tax, Medicare tax does not have the same annual taxable wage ceiling.
Example: Comparing W-2 Wage Boxes
Using the earlier illustrative figures:
| Item | Amount |
|---|---|
| Gross pay | $60,000 |
| Traditional pre-tax 401(k) | $3,600 |
| Qualifying pre-tax health contributions | $2,400 |
| Taxable fringe benefits | $600 |
| Box 1 — Federal taxable wages | $54,600 |
| Box 3 — Social Security wages | $58,200 |
| Box 5 — Medicare wages | $58,200 |
In this example, the traditional 401(k) contribution reduces Box 1 but not Boxes 3 and 5.
The qualifying health contribution reduces the relevant taxable wage amounts, while the taxable fringe benefit increases them.
All three W-2 boxes can therefore be accurate even though they do not match.
Does Federal Income Tax Withholding Reduce W-2 Box 1?
No.
This is another common misunderstanding.
Federal income tax withholding reduces the amount of money an employee takes home, but it does not normally reduce the wages reported in Box 1.
For example:
An employee has federal taxable wages of $45,000 and federal income tax withholding of $4,500.
The W-2 generally reports:
Box 1: $45,000
Box 2: $4,500
Box 1 should not simply be reduced to $40,500 because federal income tax was withheld.
The withheld amount is separately reported in Box 2.
Similar principles apply to other payroll tax withholding amounts.
Does Net Pay Appear on a W-2?
No.
Form W-2 does not have a dedicated box for annual take-home pay.
Net pay is the amount remaining after applicable payroll taxes and deductions.
For example:
Gross pay: $3,000
Total applicable taxes and deductions: $850
Net pay: $2,150
An employee’s pay stub may show all three amounts.
Form W-2 instead reports annual amounts according to federal and state tax-reporting requirements.
Employees should not compare annual W-2 Box 1 directly against annual take-home pay and expect them to match.
Why Your Final December Pay Stub May Not Match Your W-2
Even when an employee has no pre-tax deductions, differences can occur because of payment timing.
Form W-2 generally reports wages paid during the calendar year.
This is not always the same as wages earned during the year.
Example: December Work Paid in January
Suppose an employee works from December 13 through December 26, 2026.
The employer pays the employee on January 1, 2027.
According to the IRS’s general calendar-year reporting rule, those wages belong on the 2027 Form W-2, not the 2026 form.
Therefore, a payroll report organised around work periods may not match a W-2 organised around payment dates.
Before assuming there is an error, verify the pay dates and the tax year.
How to Compare Your Pay Stub and W-2 Correctly
If your payroll totals and W-2 do not match, follow this process.
Step 1: Find Your Final Pay Stub for the Tax Year
Locate the pay stub associated with the final payment made during the relevant calendar year.
Check the year-to-date totals for gross wages and taxes withheld.
If you changed jobs, be sure you are looking at the correct employer’s records.
Step 2: Review Your Pre-Tax Deductions
Identify eligible deductions that may affect taxable wages.
These can include traditional retirement contributions and qualifying health benefits.
Do not assume that every deduction reduces taxable wages.
Step 3: Compare W-2 Box 1 With Taxable Wages
If your pay stub separately displays year-to-date federal taxable wages, compare that figure with W-2 Box 1.
This comparison is often more useful than comparing Box 1 with gross earnings.
Step 4: Check Social Security and Medicare Wages
Review Boxes 3 and 5.
Remember that the rules for these wages may differ from those for federal income tax wages.
Step 5: Compare Tax Withholding
Check the year-to-date federal income tax withholding recorded in payroll.
Compare it with W-2 Box 2.
Also examine Social Security tax withholding in Box 4 and Medicare tax withholding in Box 6.
The reported amounts should be consistent with the employer’s applicable payroll tax records.
Step 6: Review Bonuses, Fringe Benefits, and Adjustments
Determine whether any taxable compensation or year-end adjustments were added after an earlier pay stub was issued.
Step 7: Contact Payroll if the Difference Remains Unexplained
If you cannot reconcile the figures, contact your employer or payroll administrator.
Ask for an explanation showing how the W-2 wage figures were calculated.
A difference does not automatically mean the W-2 is wrong, but unexplained discrepancies should be investigated.
What if Your W-2 Is Actually Incorrect?
If payroll records confirm that a W-2 was reported incorrectly, the employer may need to issue Form W-2c, Corrected Wage and Tax Statement.
Form W-2c is generally used to correct certain information already reported to the Social Security Administration.
The correct procedure depends on the type of mistake and whether the original form was already filed.
Examples of errors that may require correction include:
- Incorrect employee identification information
- Incorrect wages
- Incorrect Social Security wages
- Incorrect Medicare wages
- Certain incorrectly reported withholding amounts
Employees should contact their employer rather than changing the W-2 figures themselves.
For more information, consult the IRS General Instructions for Forms W-2 and W-3.
Can Employers Use Pay Stubs to Prepare W-2 Forms?
Yes. Accurate payroll records, including pay stubs, can provide useful information when preparing annual wage statements.
Employers should reconcile the entire year’s records rather than relying only on one employee’s last pay stub.
Information that may be needed includes:
- Total wages paid during the calendar year
- Federal taxable wages
- Federal income tax withheld
- Social Security wages
- Social Security tax withheld
- Medicare wages
- Medicare tax withheld
- Qualified retirement contributions
- Taxable benefits
- Applicable state and local wages and withholding
Reliable recordkeeping makes it easier to identify inconsistencies before year-end tax forms are prepared.
Creating Pay Stubs With PHC Workhub
PHC Workhub offers an online Paystub Generator for preparing payroll documents.
Users can enter relevant employer and employee information, pay periods, earnings, taxes, and deductions.
The document can then be reviewed before obtaining the available PDF output.
Create a Pay Stub: https://www.phcworkhub.com/paystub-generator-landing-page
The information entered should reflect genuine payroll or income records.
Creating W-2 Forms With PHC Workhub
PHC Workhub also offers an online W-2 Generator.
It allows employers and other authorised users to enter employee wage and tax information and prepare a W-2 document.
The service is particularly relevant to small businesses and employers preparing wage statements for a limited number of employees.
Create a W-2 Form: https://www.phcworkhub.com/w2-generator-landing-page
Preparing a PDF document does not, by itself, constitute filing Form W-2 with the Social Security Administration.
Employers remain responsible for accuracy, applicable filing requirements, and furnishing required copies to employees.
Common Mistakes When Comparing Pay Stubs and W-2 Forms
Mistake 1: Assuming Gross Pay Must Equal Box 1
Gross wages and federal taxable wages can differ because of pre-tax benefits and other adjustments.
Mistake 2: Comparing Box 1 With Net Pay
Net pay reflects deductions and withholding, whereas Box 1 reports federal taxable wages.
Mistake 3: Ignoring Retirement Contributions
Traditional pre-tax retirement contributions often explain why Box 1 is lower than annual gross pay.
Mistake 4: Forgetting Health Insurance Deductions
Qualifying pre-tax benefit arrangements can affect the taxable wage figures.
Mistake 5: Ignoring Taxable Benefits
Certain noncash or employer-provided benefits must be included in W-2 taxable compensation.
Mistake 6: Using the Wrong Calendar Year’s Pay Records
W-2 reporting generally follows payment dates, not simply the dates an employee performed work.
Mistake 7: Assuming Every Difference Is an Employer Error
Different figures can be correct when calculated under different tax rules.
Mistake 8: Creating Replacement Documents With Estimated or Incorrect Figures
Payroll and tax documents should reflect accurate and supportable information.
Employers should not change wages or withholding simply to make two documents appear identical.
Frequently Asked Questions About Pay Stub vs. W-2
Why does my W-2 show less income than my last pay stub?
Common reasons include traditional pre-tax retirement contributions, qualifying health insurance deductions, and other benefits that reduce federal taxable wages.
Should my W-2 match my last pay stub?
Not necessarily. W-2 Box 1 may differ from gross earnings because the documents use different reporting measures.
Does a 401(k) reduce W-2 wages?
Qualifying traditional pre-tax 401(k) contributions generally reduce federal taxable wages in Box 1. They generally do not reduce Social Security or Medicare wages.
Why is W-2 Box 1 different from Box 3?
Box 1 reports federal taxable wages, while Box 3 reports Social Security wages. Certain retirement contributions are excluded from Box 1 but included in Box 3.
Why is W-2 Box 5 higher than Box 1?
Medicare wages may include compensation excluded from federal income tax wages, such as traditional pre-tax 401(k) contributions.
Does my W-2 show net income?
No. A W-2 reports wages and taxes according to applicable tax rules, not an employee’s total take-home pay.
Do I use gross pay or net pay when preparing a W-2?
Employers must use the correct taxable wage amounts for each W-2 box. Neither gross pay nor net pay should automatically be copied into every wage field.
Can my employer correct a W-2?
Yes. If a W-2 contains an error, the employer may need to issue Form W-2c following the applicable IRS correction procedure.
Is a pay stub the same as a W-2?
No. A pay stub provides payroll information for a pay period, while a W-2 summarises reportable annual employee wages and taxes.
Can I generate pay stubs and W-2 forms online?
Yes. PHC Workhub provides online tools to prepare pay stub and W-2 documents using accurate employment and payroll information.
Can an independent contractor receive a W-2?
Independent contractors generally receive applicable Forms 1099 rather than W-2 forms for genuine nonemployee compensation. Actual worker classification depends on the employment relationship, not simply the document requested.
Final Thoughts: Understanding Your Pay Stub and W-2
Comparing payroll documents is an important part of maintaining accurate employment and tax records.
However, differences between a pay stub and Form W-2 do not necessarily indicate incorrect reporting.
Gross pay, taxable wages, Social Security wages, Medicare wages, and net pay represent different payroll and tax calculations.
Retirement contributions, qualifying employee benefits, taxable fringe benefits, and payment timing can all explain why the figures do not match.
For employees, understanding pay stub vs. W-2 differences makes it easier to review annual compensation and identify genuine reporting problems.
For employers, keeping reliable payroll records and reconciling wages before preparing annual tax forms can help reduce errors and correction requests.
Whether you are reviewing your earnings or preparing accurate payroll documents for employees, PHC Workhub offers tools to simplify document preparation.
Prepare your Pay Stubs and W-2 forms with PHCWorkhub.
Visit https://www.phcworkhub.com to explore the available payroll and tax document generators.
Disclaimer: This article provides general information about U.S. payroll and federal tax reporting. Tax treatment may vary based on individual circumstances, benefit arrangements, and applicable federal or state rules.
