Why is my first paycheck so much smaller than I expected?

The night you opened your first pay stub

You worked every shift they gave you. You did the math on the bus: your hours times your rate. You even knew what you were going to buy.

Then the deposit landed. It was smaller. Not a little smaller.

You checked the hours. They looked right. So now you are wondering if someone made a mistake, or if this is just how it works and everyone knows but you.

Mostly, it is just how it works. Nobody explains it, so it feels like a mistake.

Why "that's just taxes" is not an answer

Every adult you ask says the same thing. It's taxes. Get used to it.

That is true, and it is also not much help. It doesn't tell you which taxes, how much each one takes, or which part you might get back. It skips the one form that changes the number, the W-4 you signed on your first day.

So you end up with a gap you can't explain. And a gap you can't explain is also how you miss a real mistake, like hours that never got paid.

The lines on the stub, one by one

Here is what usually comes out, under the 2026 rules the book uses.

Social Security, 6.2 percent. It counts toward your own future benefits.

Medicare, 1.45 percent. Together with Social Security that is 7.65 percent, often labeled FICA. Say you earn $300 before taxes. FICA alone is about $23.

Federal income tax. How much depends on your W-4. This is the line you can change.

State tax, in many places. Your state sets that one.

The IRS employer tax guide, Publication 15, lists the current rates. Read your stub against your own record of hours each payday. It takes about ten minutes and catches missing hours or overtime while they are easy to fix.

The money you might get back

This is the shift that changes the feeling. Some of that income tax may not be yours to pay.

Many part-time workers earn too little to owe federal income tax, but their employer held some back anyway. For the 2026 tax year, the standard deduction for a single person is $16,100. If a parent can claim you, yours is the larger of $1,350 or your earned income plus $450, up to $16,100.

The IRS says to file a return if you can get money back. That is true even when you are not required to file. File online for free, choose direct deposit, and the IRS says the refund usually comes in about three weeks. The IRS Tax Withholding Estimator can also help you fix your W-4, so less is held back from now on.

Two quick checks before you assume it is only taxes

First, ask if you are a W-2 employee or a 1099 contractor. A contractor gets no tax taken out, but owes self-employment tax of 15.3 percent on net earnings of $400 or more. A form calling you a contractor doesn't by itself make you one, the Department of Labor says.

Second, check your rate. If you are under 20, federal law lets an employer pay $4.25 an hour, but only for your first 90 days in a row on the job. After that it is the full minimum wage. The federal minimum has been $7.25 since July 24, 2009, and many states set it higher.

How the book walks through your pay

This is the problem The 18 Manual was written for. Iris Athens wrote it so a first paycheck stops being a mystery.

Your Paycheck and Taxes has thirteen moves: the W-4, reading your stub line by line, when you have to file, filing anyway to get money back, filing for free, W-2 versus 1099, side gigs, the tips and overtime deductions for 2025 to 2028, the EITC age rule, and an online Social Security account to check your earnings record.

Work and Your Rights covers minimum wage, the youth wage, overtime after 40 hours in one week, and how to file a wage complaint for free.

The book explains the rules. It does not do your taxes. For help with your own return, IRS Free File and free VITA sites are listed at irs.gov. If a message claiming to be the IRS asks for your details, our page on money lost to a scam has what to do. The real IRS mails a letter first.