The first time people see a paycheck, they're often surprised: the amount that lands in their account is noticeably smaller than their salary. The gap between what you earn and what you take home comes down to the difference between gross pay and net pay.
Gross Pay vs. Net Pay
Gross pay is your total earnings before anything is taken out — your salary or your hourly rate times hours worked. Net pay (your “take-home pay”) is what's left after deductions. Net pay is the number that actually matters for budgeting, because it's the money you can spend.
What Gets Deducted
Several things come out of gross pay. Income taxes — federal, and often state — are withheld based on your earnings. FICA taxes fund Social Security and Medicare (about 7.65% of pay). On top of taxes, you may have deductions for health insurance, retirement contributions (like a 401(k)), and other benefits.
Because of all this, your take-home pay is often meaningfully less than your gross — which is exactly why budgeting should be based on net pay.
Withholding and the W-4
When you start a job, you fill out a W-4 form, which tells your employer how much tax to withhold from each paycheck. Withhold too little and you may owe money at tax time; withhold too much and you get a refund — which really just means you loaned the government your money interest-free for the year. The goal is to get it roughly right.
How to Read a Pay Stub
Your pay stub itemizes everything: gross pay, each tax and deduction, and the resulting net pay, usually for both the current pay period and the year to date. Reading it is a good habit — it lets you confirm you're being paid correctly and understand where your money is going before it ever reaches you.
It also connects to a bigger idea: taxes fund public services, and how much you owe depends on your income through a system of tax brackets.
Key Takeaways
- Gross pay is earnings before deductions; net pay is your take-home.
- Deductions include income tax, FICA (Social Security + Medicare), and benefits.
- Your W-4 controls how much tax is withheld each paycheck.
- Budget with net pay, not gross — it's what you actually receive.
Check Your Understanding: Gross vs. Net Pay
Five practice questions on Gross vs. Net Pay. Tap an answer to see whether you're right and why each choice is right or wrong.
1. Sofia's first pay stub lists five deductions: federal income tax, state income tax, Medicare tax, health insurance, and a 401(k) contribution. Which of these is part of FICA?
Answer: B. FICA taxes fund Social Security and Medicare, together about 7.65% of pay. Medicare is one of FICA's two parts.
Why the other choices are wrong:
- A. Federal income tax is withheld separately, based on your earnings and your W-4. FICA is a different tax that funds Social Security and Medicare.
- C. Health insurance is a benefit deduction that pays for your own coverage, not a tax. Medicare, a government health program for older Americans, is the part funded by FICA.
- D. A 401(k) is your own retirement savings account. It's a benefit deduction, not the Social Security tax that FICA collects.
2. Carmen earns $16 an hour and worked 25 hours this week. From her pay, $28 is withheld for federal income tax, $12 for state income tax, and 7.65% of her gross pay for FICA. What is her net pay for the week?
Answer: A. Gross pay is $16 × 25 = $400. FICA is $400 × 0.0765 = $30.60. Net pay = $400 − $28 − $12 − $30.60 = $329.40.
Why the other choices are wrong:
- B. This subtracts $7.65 instead of 7.65% of her pay. FICA is a percentage: $400 × 0.0765 = $30.60.
- C. $360 subtracts only the income taxes ($28 + $12) and leaves out the $30.60 for FICA.
- D. $369.40 subtracts only FICA ($30.60) and leaves out the $40 in federal and state income tax.
3. Nico's pay stub shows:
Gross pay: $2,500 this period, $7,500 year to date
Total deductions: $500 this period, $1,500 year to date
Net pay: $2,000 this period, $6,000 year to date
What percent of his gross pay does Nico take home?
Answer: D. Take-home share = net pay ÷ gross pay = $2,000 ÷ $2,500 = 80%. The year-to-date column gives the same result ($6,000 ÷ $7,500).
Why the other choices are wrong:
- A. 20% is the share of gross pay that goes to deductions ($500 ÷ $2,500), not the share he takes home.
- B. This divides deductions by net pay ($500 ÷ $2,000). The question asks what share of gross pay he takes home, so divide net pay by gross pay.
- C. This finds deductions as a percent of net pay ($500 ÷ $2,000 = 25%) and subtracts that from 100%. A percent of gross pay must use gross pay as the base.
4. Kendra got a $1,200 federal tax refund this spring and calls it “free money from the government.” What does her refund actually mean?
Answer: D. A refund means her paychecks had more tax withheld than she actually owed. She could adjust her W-4 to keep more of that money in each paycheck.
Why the other choices are wrong:
- A. This reverses how withholding works. When too little is withheld, you owe money at tax time instead of getting a refund.
- B. A refund isn't a reward for filing early. It simply returns tax that was withheld beyond what she owed.
- C. A refund generally doesn't include interest for the year. Over-withholding works like lending the government your money interest-free.
5. Tyler's new job pays $3,000 a month in gross pay. He signs up for rent, a car payment, and other bills that total $2,600 a month, expecting to have $400 left over. What is the main problem with his plan?
Answer: B. Income taxes, FICA, and benefit deductions come out of his $3,000 before he sees it, so his net pay will be noticeably smaller. A budget should be built on net pay.
Why the other choices are wrong:
- A. Benefits like health insurance and 401(k) contributions are usually deducted from pay, so they lower his take-home pay rather than add to it.
- C. Counting uncertain extra pay makes a budget riskier, not safer. The real issue is that he planned with gross pay instead of net pay.
- D. Taxes are withheld from each paycheck, not collected all at once. That withholding is exactly why his take-home pay will be less than $3,000.
Keep Studying
Related: How to Make a Budget, How Credit Scores Work.
These guides are educational and written for the AP Business with Personal Finance course. They provide general information, not personalized financial advice.