Understanding Your First US Paycheck on OPT

Pay Stub Explained: Every Box and Line Item Decoded (2026) | ADP Salary Calculator
Payroll Guide · Updated August 2026

Pay Stub ExplainedEvery Box and Line Item Decoded

Your pay stub is one of the most important documents you receive every pay period — and one of the least explained. Here’s a complete, section-by-section walkthrough.

📅 August 2026 ⏱ 11 min read 🌐 adpsalarycalculator.com

⚡ Quick Answers

Four main sections
Header, gross pay, deductions, net pay
Gross pay minus what equals net pay?
Taxes + all deductions
Do employer contributions reduce your pay?
No — informational only
What resets every January 1?
All YTD (Year-to-Date) figures

A pay stub packs a lot of information into a small space — hours, rates, taxes, benefits, and running totals, often across a dozen or more line items. It’s also one of the few documents that shows exactly how your gross earnings become your actual take-home pay, which makes it worth understanding thoroughly rather than just glancing at the deposit amount.

This guide walks through every section of a typical pay stub, box by box, using a real worked example. For deeper dives into specific pieces, see our guides on FICA tax, payroll deductions, and YTD totals.

1 The Big Picture

The Four Sections of a Pay Stub

However your specific pay stub is laid out, nearly every one breaks down into the same four functional sections:

SectionWhat It Shows
1. HeaderWho this stub belongs to, which employer, and which pay period it covers
2. Gross PayEverything you earned this period, before anything is subtracted
3. DeductionsEverything subtracted — taxes and voluntary/mandatory benefit deductions
4. Net PayWhat’s actually deposited into your account

Many stubs add a fifth, optional section for employer contributions — amounts your employer pays on your behalf that don’t come out of your check at all.

3 Gross Pay

Box 2: Gross Pay (Earnings)

This section lists everything you earned during the pay period, before any deductions. Common line items include:

LineWhat It Means
Regular Hours / Regular PayHours worked at your standard rate, up to 40 per week (for hourly employees) or your standard salary installment
Overtime (OT)Hours beyond 40/week paid at 1.5× your regular rate — see our overtime pay stub guide for a full breakdown
BonusOne-time or periodic bonus payments, which can also affect your overtime rate if paid alongside overtime hours
CommissionSales-based or performance-based pay, common in sales roles
Holiday PayPay for a recognized holiday, whether or not you worked that day
PTO / Vacation / SickPaid time off used during this period, drawn from your accrued balance
Shift DifferentialExtra pay for working less desirable shifts (nights, weekends, holidays)
Gross Pay (Total)The sum of every earnings line above — your total pay before any deductions

Not every employee will see every line — a salaried employee with no overtime eligibility, for example, will typically show just a single “Salary” or “Regular” line.

4 Deductions

Box 3: Deductions

This section lists everything subtracted from your gross pay, generally split into two groups:

Mandatory Tax Deductions

  • Federal Income Tax (FIT/FED) — based on your W-4 and income
  • Social Security (SS) — 6.2% of wages up to the annual cap
  • Medicare (MED) — 1.45% of all wages, no cap
  • State Income Tax (SIT) — applies in most states
  • Local/City Tax — applies in some cities and counties

Voluntary and Benefit Deductions

  • Health, dental, vision insurance premiums
  • 401(k) or other retirement plan contributions
  • HSA or FSA contributions
  • Life or disability insurance premiums
  • Garnishments (child support, wage garnishment orders) — mandatory once ordered, but not tax-related

For a full explanation of each individual deduction type, see our payroll deductions guide.

5 Employer Contributions

Box 4: Employer Contributions

Some pay stubs include a separate section showing what your employer contributes on your behalf — for transparency, even though none of it is subtracted from your pay:

  • Employer 401(k) match
  • Employer share of health insurance premiums
  • Employer FICA match (the employer’s matching 7.65% of Social Security and Medicare)
  • Employer-paid life or disability insurance
⚠️ Don’t confuse this with your own pay: Employer contribution lines are informational only. They don’t add to your net pay and shouldn’t be counted as part of your take-home income — they’re a separate benefit your employer is providing on top of your wages.
6 Net Pay

Box 5: Net Pay

The Formula

Net Pay = Gross Pay − All Tax Withholding − All Deductions

This is the number that actually lands in your bank account (or on your paycheck, if paid by check). It’s usually shown prominently, often in bold or a different color, at the bottom of the stub. Some stubs also show a “Net Pay Distribution” section if your pay is split across more than one account.

7 YTD Column

The YTD Column, Explained

Most pay stubs show two numbers for every line item: “This Period” and “YTD” (Year-to-Date). YTD is simply the running cumulative total for that specific line from January 1 through the current pay period.

  • Gross Pay YTD shows your total earnings for the year so far
  • FIT YTD and FICA YTD show cumulative tax withholding
  • 401(k) YTD helps you track progress toward the annual contribution limit
  • Net Pay YTD shows your cumulative take-home pay for the year

All YTD figures reset to zero at the start of each new calendar year. See our dedicated YTD guide for how to use these figures to catch errors or plan ahead.

8 Full Example

Full Sample Pay Stub, Fully Labeled

Scenario: A non-exempt employee earning $26/hour, biweekly pay period, worked 84 hours (80 regular + 4 overtime) with standard benefit deductions.

💰 Sample Biweekly Pay Stub
Gross Pay
Regular (80 hrs × $26.00)$2,080.00
Overtime (4 hrs × $39.00)$156.00
Gross Pay$2,236.00
Deductions — Taxes
Federal Income Tax−$246.00
Social Security (6.2%)−$138.63
Medicare (1.45%)−$32.42
State Income Tax (est.)−$89.44
Deductions — Benefits
Health Insurance Premium−$95.00
401(k) (5%)−$104.00
Net Pay$1,530.51
Employer Contributions (Informational)
Employer 401(k) Match (3%)$62.40
Employer FICA Match$171.05
Employer Health Premium Share$285.00

Notice the employer contributions at the bottom don’t affect the $1,530.51 net pay figure at all — they’re shown for transparency about the total value of the compensation package, not as money added to this paycheck.

9 Red Flags

Red Flags to Watch For

RED FLAGHours don’t match your timesheet
WHAT TO DO

Compare your recorded hours against your own timesheet or time-tracking records for that exact pay period, including any overtime.

RED FLAGA deduction you don’t recognize or didn’t authorize
WHAT TO DO

Check it against your benefits enrollment confirmation. If it’s still unfamiliar, ask HR or payroll for the documentation behind it before assuming it’s an error.

RED FLAGYour take-home percentage looks unusually low or high
WHAT TO DO

A sudden, large shift in your net-to-gross ratio can indicate a W-4 change, a new deduction, or a payroll error. Compare against your prior pay stub to isolate exactly which line changed.

RED FLAGYTD figures don’t grow consistently
WHAT TO DO

YTD totals should increase by roughly “This Period” amount each time. A YTD figure that jumps unexpectedly or doesn’t increase at all is worth flagging to payroll.

RED FLAGPay rate doesn’t match your offer letter or last raise
WHAT TO DO

Rate changes should be reflected starting the pay period they take effect. If a recent raise or rate change isn’t showing up, check with HR on the effective date they have on file.

10 W-2 Connection

How Your Pay Stub Connects to Your W-2

Your final pay stub of the calendar year is essentially a preview of your W-2:

  • Box 1 (Wages) on your W-2 should generally match your final YTD gross pay, minus certain pre-tax deductions like traditional 401(k) contributions and pre-tax health premiums
  • Box 2 (Federal Income Tax Withheld) should match your final YTD FIT figure
  • Boxes 3 and 5 (Social Security and Medicare Wages) should match your final YTD FICA wage bases, which can differ slightly from Box 1 depending on which deductions are FICA-exempt
  • Retirement contributions, HSA contributions, and other pre-tax benefit totals should tie back to their respective YTD lines
💡 Good practice: When your W-2 arrives, compare it against your last pay stub of the year. If the numbers don’t reconcile, it’s worth raising with payroll before you file your tax return, not after.
11 Fixing Errors

Getting an Error Fixed

  1. Document the specific discrepancy — save or screenshot the pay stub and note exactly which line looks wrong
  2. Compare it against your own records: timesheet, offer letter, benefits enrollment confirmation, or your last correct pay stub
  3. Contact your payroll or HR department promptly rather than waiting — many states set specific deadlines for correcting wage errors
  4. Put the request in writing (email is fine) so there’s a clear record of when you raised it
  5. Follow up if you don’t hear back within a reasonable timeframe, and escalate to a manager or HR leadership if needed

Genuine payroll errors are common and usually correctable — most employers would rather fix a mistake quickly than have it repeat across future pay periods.

Pay Stub Explained — FAQs

What are the main sections of a pay stub?
A pay stub is generally organized into four sections: header information (employee and employer details, pay period, pay date), gross pay (earnings before deductions), deductions (taxes and benefits withheld), and net pay (the final take-home amount). Many stubs also show employer contributions and YTD (year-to-date) totals alongside each line.
What is the difference between gross pay and net pay?
Gross pay is your total earnings before anything is withheld — regular wages, overtime, bonuses, and other earnings combined. Net pay is what’s left after taxes and deductions are subtracted, and it’s the amount actually deposited into your bank account.
What red flags should I look for on my pay stub?
Common red flags include hours that don’t match your timesheet, a missing or incorrect pay rate, deductions you don’t recognize or didn’t authorize, a gross-to-net gap that seems too large or too small, and YTD figures that don’t grow consistently from one pay period to the next.
What should I do if I find an error on my pay stub?
Document the specific discrepancy, compare it against your timesheet or offer letter, and contact your payroll or HR department promptly rather than waiting — most states require wage errors to be corrected within a specific timeframe, and catching it early makes the correction simpler.
Do employer contributions appear on my pay stub?
Many pay stubs display employer contributions, such as the employer’s 401(k) match or its share of health insurance premiums, as an informational line even though these amounts are not deducted from your pay and don’t affect your net pay.
Why does my pay stub show two amounts for every line — “This Period” and “YTD”?
“This Period” shows the amount for that single paycheck, while “YTD” (Year-to-Date) shows the cumulative total for that same line item from January 1 through the current pay period. Both numbers are useful — one for verifying this specific check, the other for tracking annual totals.
Should Box 1 on my W-2 match my gross pay for the year?
Not exactly. Box 1 reflects taxable wages, which is your total gross pay minus certain pre-tax deductions like traditional 401(k) contributions and pre-tax health insurance premiums. It’s normal for Box 1 to be somewhat lower than your total YTD gross pay figure.

Check Your Own Numbers

Use our free ADP Salary Calculator to estimate gross pay, taxes, and net pay for your own situation and compare it against your actual pay stub.

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© 2026 adpsalarycalculator.com — For informational purposes only. Pay stub layouts and line-item names vary by employer and payroll provider. Consult your HR or payroll department for questions specific to your own pay stub.

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