Starting a new job is exciting — especially when payday rolls around. But for many first-time employees, that moment can be confusing. So why is my paycheck smaller than I was told I'd earn?

You’re not alone in wondering this. If you’re staring at your bank account or paycheck stub and scratching your head, this guide is for you. Let’s break down where your money is going and what those paycheck deductions mean.

1. Gross Pay vs. Net Pay: What’s the Difference?
Before diving into the deductions, it’s important to understand these two key terms:

  • Gross Pay: This is your total earnings before anything is taken out. It’s calculated based on your hourly wage or salary and hours worked.
  • Net Pay: This is your actual take-home pay, the amount that hits your bank account after deductions.

If your job offer said you’d make $20/hour and you worked 40 hours a week, that’s $800 gross pay. But if your paycheck shows something like $650, that’s your net pay and the difference comes from deductions.

2. Common Paycheck Deductions (and What They’re For)
Let’s look at where that missing money is going.

a. Federal Income Tax
This is a tax you pay to the U.S. government. The amount depends on how much you make and the details you provided on your W-4 form (like your filing status and number of dependents).

Tip: If you want to adjust how much is withheld, you can submit a new W-4 to your employer.

b. State Income Tax
Not all states have this, but if yours does (like California or New York), part of your paycheck will go toward it. Rates vary by state and your income level.

c. FICA Taxes (Social Security and Medicare)
These two taxes fund programs that provide benefits for retirees and disabled individuals, and healthcare for people 65 and older.

  • Social Security: 6.2% of your gross pay
  • Medicare: 1.45% of your gross pay

    Your employer also contributes an equal amount on your behalf.

d. Health Insurance Premiums
If your employer provides health insurance and you’ve signed up, your portion of the premium may be taken out of your paycheck either pre-tax or post-tax.

e. Retirement Contributions (e.g., 401(k))
Some companies offer retirement savings plans. If you choose to contribute a portion of your paycheck to a 401(k) or similar plan, that money gets deducted before taxes.

f. Other Deductions
Depending on your job and benefits, there may be other deductions:

  • Union dues
  • Life or disability insurance
  • Commuter benefits
  • Wage garnishments (if you owe child support or have unpaid debts)

3. Mistakes That Can Make Your Paycheck Look Smaller
While deductions are normal, errors can also happen. Keep an eye out for these issues:

a. Incorrect Tax Withholding
If you filled out your W-4 incorrectly, you may be withholding too much or too little. Either way, it can mess with your expected net pay.

b. Unpaid Time Off or Sick Days
If you missed work and don’t have paid time off (PTO), your earnings may be lower that pay period.

c. Overtime Misunderstandings
Some people expect time-and-a-half pay without knowing it only applies under certain conditions (like working more than 40 hours a week, depending on your state and employer).

4. How to Read a Pay Stub
Your pay stub is the key to understanding exactly where your money goes. It usually includes:

  • Pay Period: The date range for the paycheck
  • Gross Earnings: Your total earnings before deductions
  • Taxes Withheld: How much went to federal, state, and local taxes
  • Benefits Deductions: Health, dental, vision, etc.
  • Net Pay: The amount you receive

Take a few minutes to review each stub. It’s a habit that can save you from future surprises.

5. What You Can Do If Your Paycheck Still Doesn’t Look Right
If you’ve reviewed your pay stub and something still doesn’t add up:

  • Talk to HR or Payroll: They can help clarify deductions and check for errors.
  • Check Your W-4: You can update it anytime to change how much tax is withheld.
  • Use a Paycheck Calculator: Free online tools can estimate your net pay based on your inputs.
  • Track Your Hours: Especially if you’re paid hourly, make sure you’re being paid for all the time you worked.

6. Planning Ahead: Budgeting With Your Net Pay
Many beginners make the mistake of budgeting with their gross pay in mind. Always base your budget on net pay what you actually take home.

If you earn $800 gross per week but take home $650, base your rent, groceries, and other expenses on that $650, not the full $800.

7. Final Thoughts: Don’t Panic: Learn the System
Getting your first paycheck can be a reality check, but it doesn’t mean you’re being cheated or paid unfairly. Taxes and deductions are part of working life, and once you understand how they work, you’ll be in a better position to manage your money smartly.

The key takeaway? Your gross pay isn’t the whole story.

But with a little knowledge and regular paycheck check-ins, you can take control of your finances from day one.