Your First Paycheck: Why It Is Smaller Than You Expected
Your first paycheck is smaller than your hourly rate suggests because federal income tax, Social Security (6.20%), and Medicare (1.45%) are withheld before you receive your pay. A worker earning $15 per hour for 80 hours ($1,200 gross) might take home around $1,048.05 after taxes - and that is before any state income tax or voluntary deductions like health insurance.
Social Security and Medicare (FICA)
FICA stands for the Federal Insurance Contributions Act. Every employee in the United States pays FICA taxes on their wages. For 2026, the rates are:
- Social Security: 6.20% of gross wages, up to a wage base of $184,500 per year. If your total earnings are below that threshold - which is almost every first-job worker - you pay 6.20% on every dollar you earn.
- Medicare: 1.45% of gross wages, with no annual cap. Every dollar of wages is subject to Medicare tax.
Combined, FICA costs you 7.65% of every paycheck. Your employer also pays a matching 7.65% on top of your wages - but that employer portion does not come from your paycheck.
You cannot reduce FICA withholding through your W-4. These are statutory rates that apply to every employee regardless of filing status or withholding elections.
Federal income tax withholding
Unlike FICA, federal income tax withholding depends on your W-4 settings and your income level. Your employer uses IRS withholding tables (Publication 15-T) to estimate how much income tax to hold back from each paycheck.
The key concept: your employer withholds as if you will earn the same amount every pay period all year. They annualize your paycheck, subtract the standard deduction for your filing status ($16,100 for single in 2026), apply the tax brackets to the result, then divide by the number of pay periods in a year.
At entry-level wages, the standard deduction often covers a large portion of annual income, meaning federal income tax withholding can be quite small.
Worked example: $15/hour biweekly
Here is a concrete breakdown for a worker earning $15 per hour, paid biweekly, with 80 hours in the pay period ($1,200 gross pay). Assumptions: single filing status, W-4 with only Steps 1 and 5 completed, no pre-tax deductions.
| Item | Calculation | Amount |
|---|---|---|
| Gross pay | $15.00 x 80 hours | $1,200.00 |
| Social Security withheld | $1,200 x 6.20% | -$74.40 |
| Medicare withheld | $1,200 x 1.45% | -$17.40 |
| Federal income tax withheld | Annualized $31,200 - $16,100 std ded = $15,100 taxable; tax $1,564 / 26 pay periods | -$60.15 |
| Net (take-home) pay | Before state tax, if any | $1048.05 |
The income tax estimate above uses annualized withholding per IRS Pub 15-T table method. Actual withholding may vary slightly by employer payroll system. State income tax, if applicable, would reduce take-home pay further.
Pre-tax deductions
If your employer offers benefits, some deductions come out before taxes are calculated. These pre-tax deductions reduce your taxable income:
- 401(k) or 403(b) contributions: Traditional (not Roth) contributions reduce federal income tax withholding. They do not reduce FICA taxes.
- Health insurance premiums: Employer-sponsored health insurance premiums paid through a Section 125 cafeteria plan reduce both federal income tax and FICA withholding.
- Health Savings Account (HSA) contributions: Reduce federal income tax and FICA when made through payroll.
- Flexible Spending Account (FSA): Similar pre-tax treatment to HSA contributions for medical or dependent care expenses.
If you enroll in any of these benefits, your take-home pay will differ from the example above - but your actual tax liability also goes down, so the reduction is smaller than the deduction amount suggests.
State income tax
Most states also levy income tax, which your employer withholds from the same paycheck. Nine states have no state income tax (Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming), so workers there only deal with federal taxes. In states with income tax, the withholding varies by state rate and your state equivalent of the W-4.
Reading your pay stub
Your pay stub should itemize every deduction. Look for these line items:
- Gross Pay: Your total earnings before deductions.
- Fed Income Tax (or FWT / Federal W/H): Federal income tax withheld.
- OASDI (or Soc Sec / SS Tax): Social Security withholding at 6.20%.
- Medicare (or Med Tax): Medicare withholding at 1.45%.
- State Income Tax (label varies by state): State withholding if applicable.
- Net Pay: What is deposited to your account after all deductions.
If any line item looks wrong - for example, if Social Security is not showing or the percentage looks off - verify with your payroll department immediately. Errors in withholding can cause problems when you file your tax return.