Why Is My First Paycheck So Low? 9 Common Reasons (2026)

Salary • By Hassan Raza • Published October 21, 2026 • Updated October 21, 2026

Why is my first paycheck so low? It's a question almost everyone asks. You start a new job, you've worked out what your salary comes to, and then the first paycheck shows up noticeably smaller than you expected. It's one of the most common new-job surprises, and in most cases the explanation is ordinary.

Nine reasons explain the bulk of low first checks. Your pay stub tends to tell you which one you're dealing with, and the end of this article covers when to get payroll involved. I've tied the tax details to official IRS and Department of Labor sources so you can verify them.

Note: Tax and payroll figures are general estimates. Your employer's payroll system, your Form W-4, and your state's rules determine your actual pay. This isn't tax advice.

1. You Were Paid for a Partial Pay Period

If you started partway through a pay period, your first check usually covers only the days you actually worked. Example: you're paid biweekly, the period runs Monday to the Friday of the following week (10 working days), and you started on the second Monday. Your first check covers 5 days, so it's about half a normal check.

How to check: Find the "pay period" dates on your stub, along with the hours or days paid.

2. Your Employer Pays "in Arrears" (Pay Lag)

Plenty of employers pay for a pay period that closed days or even a week before payday, which gives them time to process hours. So your first payday may arrive later than you'd expect, and it may cover only part of the time you've worked so far. The rest shows up on the next check.

Is that allowed? Under the federal Fair Labor Standards Act (FLSA), the Department of Labor says wages are due on the regular payday for the pay period covered, but the FLSA itself doesn't set a pay schedule. Pay frequency rules come mainly from the states, and DOL's table of state payday requirements shows how they differ, from weekly to monthly. If your first check seems unusually late, check your state's rules.

3. Federal Income Tax Withholding From Your W-4

Your employer withholds federal income tax based on the Form W-4 you filled out and the IRS withholding tables in Publication 15-T. A few things commonly make withholding higher than expected:

• You checked the box in Step 2 for multiple jobs or a working spouse, which raises withholding.
• You entered extra withholding in Step 4(c).
• You didn't claim dependents in Step 3, if you have them.
• Your pay is annualized per check. Withholding treats each paycheck as if you earn that amount all year. That usually works out, but irregular first checks can look odd.

If you didn't submit a W-4 at all, IRS guidance tells employers to withhold as if you were single (or married filing separately) with no entries in Steps 2, 3 or 4, which may mean more withholding than you'd choose.

What to do: Use the IRS Tax Withholding Estimator and submit a new W-4 to payroll if needed. Remember that withholding is an estimate. You reconcile what you actually owe when you file your tax return.

4. Social Security and Medicare (FICA)

These come out of every paycheck and can't be adjusted on your W-4. According to IRS Publication 15 (2026):

• Social Security: 6.2% of wages, up to the 2026 wage base of $184,500
• Medicare: 1.45% of all wages
• Additional Medicare Tax: employers must withhold an additional 0.9% on wages over $200,000 in a calendar year

Together, that's 7.65% of most people's pay before any income tax. If you're used to seeing only income tax deducted (for example, if you were self-employed or a student), FICA alone can make a check look smaller.

5. Benefit Deductions Started (Sometimes With Catch-Up)

Once your coverage starts, health, dental and vision premiums come out of every check. Two things can make that first deduction look larger than it is later:

• Multiple premiums at once. Medical, dental, vision, life and disability coverage each may have its own line.
• Catch-up or retroactive deductions. If coverage started before your first payroll processed, some employers deduct two periods' premiums on the first check.

How to check: Hold the deductions section of your stub up against your benefits enrollment confirmation and see whether they match.

6. Your 401(k) Contributions Began

If you enrolled in your employer's 401(k), or were automatically enrolled, your contribution comes out of each paycheck. Traditional pre-tax contributions lower your taxable income, so the drop in take-home is smaller than the contribution itself, but it's still noticeable.

Example: On a $2,308 biweekly check ($60,000 a year), a 5% contribution is about $115 per check.

If you were auto-enrolled at a rate you didn't choose, you can usually change it. Before lowering it, check how much you need to contribute to get the full employer match. See our 401(k) match explained guide.

7. State and Local Income Taxes

If you moved from a state without an income tax (such as Texas or Florida) to one with an income tax, or to a city with its own local income tax, you'll see new withholding lines. Some states use the federal W-4, while others have their own withholding form, so check whether your employer gave you a state form to complete.

How to check: Scan your stub for a "state income tax" line, plus any city, county or school district tax lines.

8. Other Deductions You May Not Have Expected

Depending on your job and employer, a few other lines may turn up:

• State payroll programs, such as state disability insurance or paid family leave contributions in some states
• Union dues
• Commuter or parking deductions
• Voluntary benefits like supplemental life or accident insurance
• Uniform or equipment charges, where allowed by law

Your stub or your onboarding paperwork should explain each one.

9. A Payroll Error

Payroll gets things wrong sometimes, especially on first checks. Typical slips:

• The wrong pay rate or salary
• Missing hours or a missed shift
• Overtime not paid at the correct rate (for non-exempt employees)
• Deductions for benefits you declined
• The wrong state for tax withholding

Under the FLSA, covered non-exempt employees must be paid at least the federal minimum wage and overtime at one and a half times their regular rate for hours over 40 in a workweek. Many states set higher standards.

Bonus Reason: Your Sign-On Bonus Was Withheld Differently

If you got a sign-on bonus, it may have been paid separately or in the same check. The IRS treats bonuses as supplemental wages. If certain conditions are met, employers can withhold federal income tax at a flat 22%, and they must use 37% on supplemental wages over $1 million in a year, separate from your regular withholding, and Social Security and Medicare still apply. That can make a bonus check look smaller than you expected.

For the details, see how bonuses are taxed.

How to Read Your Pay Stub (Annotated Example)

Here's a simplified stub for a first biweekly check, belonging to someone on $60,000 a year who started mid-period. All figures are illustrative.

What to look for on it: - Gross pay tells you whether you were paid for the right time. If it's half of what you expect, look at the dates before anything else. - Pre-tax deductions (401(k), many health premiums) reduce the wages subject to federal income tax. According to IRS Publication 15-B, health premiums paid through a cafeteria plan are generally exempt from Social Security and Medicare too, but 401(k) deferrals aren't. That's why Social Security and Medicare above are calculated on a slightly different amount. - Year-to-date (YTD) columns on a real stub help you confirm totals over time.

When to Contact Payroll

Contact payroll or HR if:

• Your gross pay doesn't match your rate and the hours or days in the pay period
• You see deductions for benefits you didn't select
• Your tax withholding is for the wrong state
• You're missing hours, overtime or a promised payment
• Your check is later than your employer's stated payday

Keep your message short and specific:

"Hi [Name], I'm reviewing my first paycheck for the period [dates]. My gross pay shows [$X], but based on my [rate/salary] and [days/hours] worked, I expected about [$Y]. Could you help me understand the difference?"

If an underpayment isn't fixed, your state labor department or the DOL Wage and Hour Division can explain your options.

For other new-job paperwork and habits, see our first 90 days guide. For the bigger picture on take-home pay, see $60,000 a year after taxes.

Keep Going

Once your first check makes sense, our salary guides go further into pay, offers and benefits. And if this job turns out to be the wrong fit, restart the search using the steps in how to find a job in the U.S.

Frequently Asked Questions

Why is my first paycheck less than half of what I expected? The most common cause is a partial pay period combined with pay lag: you were paid for only some of the days you worked. Check the pay period dates on your stub.

Why was so much tax taken out of my first paycheck? Your W-4 settings, FICA (7.65% for most workers), state taxes, and how payroll annualizes each check all play a part. Use the IRS Tax Withholding Estimator to check whether your W-4 needs updating.

When will I get my first paycheck at a new job? It depends on your employer's pay schedule and your state's payday laws. Federal law doesn't set a specific pay frequency, and state rules vary, so ask HR when your first payday is.

Will my second paycheck be bigger? Often, yes. If your first check covered a partial period or included catch-up deductions, your second check usually reflects a full period.

Can I change my 401(k) contribution or W-4 after the first paycheck? Usually yes. You can typically submit a new W-4 at any time, and most plans let you change contribution rates periodically. Ask HR about timing.

Sources

1. Internal Revenue Service, Form W-4, Employee's Withholding Certificate: https://www.irs.gov/forms-pubs/about-form-w-4
2. Internal Revenue Service, Publication 15-T (2026), Federal Income Tax Withholding Methods: https://www.irs.gov/publications/p15t
3. Internal Revenue Service, Publication 15 (2026), Employer's Tax Guide: https://www.irs.gov/publications/p15
4. Internal Revenue Service, Topic No. 751, Social Security and Medicare withholding rates: https://www.irs.gov/taxtopics/tc751
5. Internal Revenue Service, Tax Withholding Estimator: https://www.irs.gov/individuals/tax-withholding-estimator
6. U.S. Department of Labor, Wage and Hour Division, "Digital Reference Guide to the Fair Labor Standards Act" (PDF): https://www.dol.gov/sites/dolgov/files/WHD/legacy/files/Digital_Reference_Guide_FLSA.pdf
7. U.S. Department of Labor, Wage and Hour Division, "State Payday Requirements": https://www.dol.gov/agencies/whd/state/payday
8. U.S. Department of Labor, Wage and Hour Division, Fair Labor Standards Act: https://www.dol.gov/agencies/whd/flsa
9. Internal Revenue Service, "Retirement topics – 401(k) and profit-sharing plan contribution limits": https://www.irs.gov/retirement-plans/plan-participant-employee/retirement-topics-401k-and-profit-sharing-plan-contribution-limits
10. Internal Revenue Service, Publication 15-B (2026), Employer's Tax Guide to Fringe Benefits: https://www.irs.gov/publications/p15b
11. Internal Revenue Service, Topic No. 753, Form W-4, Employee's Withholding Certificate: https://www.irs.gov/taxtopics/tc753