Why Is My Teen's First Paycheck So Small?
Short answer
Two separate things are usually happening. The first is timing: most jobs pay in arrears, so a first check often covers only part of a pay period, and the hours they remember working are not all on it. The second is payroll taxes, and the big one is FICA, 7.65 percent of gross pay for Social Security and Medicare. On an ordinary job with an outside employer it comes out of the first dollar however young the worker is and however little they earn, and it does not come back later. Federal income tax withholding, which is the other deduction on most stubs, is a different thing and can come back when a return is filed.
Start with the stub, not the number
The reaction to a first paycheck is usually arithmetic-shaped. They worked out hours times rate weeks ago, told everyone the number, and the deposit is meaningfully less. Before any explaining, open the actual pay stub. Most of the frustration comes from looking only at the amount that landed in the account, which is the last line of a document that explains itself.
Every stub is laid out slightly differently, but the order is almost always the same: the period it covers, then gross, then deductions one at a time, then net. There is usually a second column of year-to-date totals next to each line, which is worth pointing out because it is the running total that will matter in January.
Line one: the pay period, and why the maths already looks wrong
Before any tax, check the dates at the top. A stub covers a specific pay period, and payday is after that period closes, not on the day it closes. Payroll has to be run.
That means a first check frequently covers less work than the teenager remembers doing. If they started midway through a two-week period, the first check may hold only a few shifts, with the rest arriving on the next one. Some employers also pay a week in arrears, so a period that ends on a Sunday pays out the following Friday or later. A teenager who started at the beginning of a period and is paid every two weeks with a week of lag has genuinely worked close to three weeks before the first money arrives.
None of that is money missing. It is money not yet due. It is also the single easiest part to fix before it happens: ask the manager two questions on day one, which day the pay period ends and which day it pays, and write both on the calendar.
Line two: gross pay
Hours times rate, plus any overtime or tips. This is the number they have been quoting. It is also the last line on the stub that matches the mental version.
Check it. Compare the hours on the stub against what they actually worked, because this is the only line where a genuine error tends to appear, and a teenager who is not in the habit of tracking shifts has no way to notice. If the hours look off, or if the schedule itself does not look right for their age, the federal limits on a fourteen or fifteen year old’s hours are set out in how many hours can a 14 or 15 year old work, and state rules can be stricter.
Line three: federal income tax withheld
This is a prepayment against whatever they might owe for the year. How much comes out depends entirely on what was put on the W-4 during onboarding, which is why a form nobody read carefully turns into a question about a paycheck six weeks later.
The important property of this line: it can come back. If their income for the year is low enough that they owe no federal income tax, filing a return reclaims it. Many teenagers are in exactly that position. If it is coming out and it probably should not be, the fix is a new W-4, covered in how to fill out a W-4 for a teenager.
Line four and five: Social Security and Medicare, and this is the one
Usually printed as two lines, sometimes labeled OASDI and Medicare, sometimes bundled as FICA. Social Security is 6.2 percent of gross and Medicare is 1.45 percent, which is 7.65 percent together. It is the employee half of the 15.3 percent that self-employed people pay on their own earnings, because they owe both halves. The employer pays the other half separately, out of its own pocket, which is worth mentioning because it is genuinely interesting to a sixteen year old.
Three facts about this line, and they are the heart of the whole page:
- Being fifteen does not exempt them. On an ordinary job with an unrelated employer, age makes no difference to this line. The narrow exceptions that do exist are covered below.
- There is no small-earnings exemption. It comes out of the first dollar of W-2 wages, not out of the amount above some threshold.
- It does not refund. Filing a tax return does not bring it back. It is not a prepayment of anything. This is the difference between this line and the federal income tax line above it, and it is the distinction almost every explanation online skips.
There are narrow exceptions, and they are worth knowing only because one of them is common in family businesses. The IRS’s page on family employees says that “payments for the services of a child under the age 18 are not subject to social security and Medicare taxes” where the business is a parent’s sole proprietorship, or a partnership in which each partner is a parent of the child. It says the opposite where the business is a corporation or a partnership with a non-parent partner. A student employed by the school they attend can also sit outside FICA. Neither of those describes a shift at a supermarket, so for a normal outside job the three points above are the ones that apply.
Roughly speaking, a teenager should expect somewhere near eight cents of every dollar to be gone before any income tax is considered. The first paycheck estimator does the split for a given rate and schedule, and showing it to them before the first shift converts the whole thing from a grievance into a fact about how jobs work.
Line six: state, and sometimes local, income tax
This one varies enormously. Some states have no income tax on wages at all, some withhold from the first dollar, and some cities add their own on top. There is no honest national number to give you here. The line on your teenager’s stub, if there is one, is the answer for your state, and your state revenue department’s website is the place to check how it works.
Line seven onwards: everything else
Below the taxes, stubs sometimes carry other deductions: a uniform charge, a meal plan, a retirement contribution, a garnishment. These are not universal and they depend on the employer and on what was agreed at hire. If something is being deducted that nobody recognizes, that is a question for the manager or payroll contact, not a thing to accept quietly.
Net pay
The number in the bank. If the stub adds up, this is not a mistake, it is just the first time anybody explained the difference between what a job pays and what a job pays you.
What this looks like
Ryan is sixteen, hired at fifteen dollars an hour for around ten hours a week, paid every two weeks. He has told his friends he is making three hundred dollars a check.
His gross for a full period is indeed three hundred dollars. Social Security takes 6.2 percent, about eighteen dollars and sixty cents. Medicare takes 1.45 percent, about four dollars and thirty-five cents. That is roughly twenty-three dollars gone at 7.65 percent, before anything else. Depending on his W-4, some federal income tax comes out on top, and if his state withholds, that too.
His actual first check is smaller again, because he started nine days into the pay period and his employer pays a week behind. It covers four shifts, not ten. He is convinced he has been underpaid.
He has not been. By the third check the timing is normal and the only permanent gap is the payroll tax. The twenty-three dollars is not coming back. The income tax withholding might, when he files, and whether he needs to file at all is covered in does my teenager have to file taxes.
The conversation worth having once
Do it before the first check, not after. Fifteen minutes, at the table, with a piece of paper: gross, minus FICA, minus withholding, equals the number that arrives, and the date it actually arrives.
Then plan against the real figure rather than the imagined one. A teenager who has committed to a phone bill based on hours times rate is short every month for a reason they never see. The teen budget worksheet starts from take-home pay on purpose.
This is general information, not tax advice. Payroll rules and state withholding change, so check the linked primary sources or ask a professional if a specific amount matters.
Common questions
Is there an age where Social Security and Medicare stop being withheld?
Not on a normal job with an outside employer. A fifteen year old working eight hours a week has FICA withheld at the same 7.65 percent as an adult on a full-time salary, and this surprises nearly every first-time worker. There are narrow exceptions, and the main one is a child under 18 working in a parent’s own unincorporated business, where the IRS says payments for the child’s services are not subject to Social Security and Medicare taxes. A student employed by the school they attend can also fall outside it. If neither describes your teenager’s job, expect the deduction.
Can they get the FICA money back by filing a tax return?
No. Federal income tax that was withheld can come back as a refund if they end up owing none. Social Security and Medicare are a separate system and a return does not reclaim them.
Why is the first check for fewer hours than they worked?
Because pay periods close before payday. Many employers run a lag of a few days to a week between the end of a pay period and the check that covers it, and a worker who started mid-period gets a partial first check. Ask the manager which day the pay period ends and which day it pays. It settles into a rhythm after the second check.
Should we look at the stub or the app?
Look at the stub itself, not just the deposit total in the banking app. The stub is where the split between gross, each deduction and net actually appears, and it is the only place an error is visible.
What if the hours on the stub are wrong?
Raise it with the manager quickly and in writing, with the dates and times, and keep the teenager’s own record of shifts. Payroll corrections are normal, but they are far easier inside the same pay period than three months later.
Sources
- IRS Topic no. 554, Self-employment tax (the 15.3 percent combined rate; the employee half is 7.65 percent)
- IRS, Check if you need to file a tax return
- IRS Form W-4 (2026), Employee's Withholding Certificate
- US Department of Labor, WHD Fact Sheet #43, child labor in non-agricultural occupations
- IRS, Family employees (the under-18 exception for a parent's unincorporated business)