Your Teen's First Paycheck Contains Four Decisions. Most Families Get Two Of Them Wrong.

A teenager gets hired for a fall job. On day one a manager hands over a stack of forms, points at the places to sign, and the teenager signs. Nobody explains anything, because explaining is not the manager's job.

Inside that stack are decisions that determine whether your teenager overpays taxes for a year, whether they get that money back, and whether they start a retirement account worth more than almost anything else they do with the money.

Four decisions. Two are administrative and hard to get badly wrong. Two compound for fifty years. Most families handle the administrative ones and miss the compounding ones entirely.

Form I-9 verifies identity and authorization to work. It is the least interesting form in the stack and the one most likely to cause a problem on day one, because it requires specific documents.

A teenager needs either one document from List A, which for most is a passport, or one from List B plus one from List C. In practice that usually means a driver's license or state ID plus a Social Security card.

The failure mode is predictable. The Social Security card is in a filing cabinet somewhere and nobody has seen it in a decade. Replacement takes time. If your teenager is job hunting this fall, find that card now rather than the morning of orientation.

Some states also require a work permit or employment certificate for minors, with rules that vary by state and by age. Check your state's labor department before the first shift.

Form W-4 tells the employer how much federal income tax to withhold. This is where money gets left on the table.

For 2026, the standard deduction for a single filer is $16,100. A teenager whose income comes entirely from wages and totals less than that amount will owe no federal income tax on it. Most teenagers with part-time jobs are nowhere near $16,100.

The W-4 has a provision for exactly this situation. If a person had no federal income tax liability last year and expects none this year, they can claim exempt from withholding, which means no federal income tax comes out of the paycheck at all.

Two cautions before you do this. Exempt status applies only to federal income tax. Social Security and Medicare are still withheld, so the paycheck will not be the full gross amount regardless. And an exempt claim has to be renewed each year, so it is not set and forget.

If your teenager does not claim exempt and tax gets withheld anyway, the money is not lost. It is a free loan to the government that gets repaid when they file. Which is decision three.

Here is where the second common mistake happens.

A teenager earning under the filing threshold is not required to file a federal return. Families hear "not required" and stop. But if federal income tax was withheld and the teenager owes nothing, filing is the only way to get that money back.

The amounts are not trivial. A teenager earning $6,000 over a fall and winter with standard withholding might have several hundred dollars sitting with the IRS. Nobody sends it back automatically.

The mechanics are worth understanding. A dependent's standard deduction in 2026 is generally their earned income plus $450, subject to a $1,350 floor and capped at the $16,100 single-filer amount. A teenager who earned $6,000 has a standard deduction of $6,450 against that income, which is more than they earned, which is why they owe nothing.

There is a second reason to file. It establishes a record of earned income, and earned income is what unlocks decision four.

This is the decision worth the most and the one families skip most often.

A teenager with earned income can contribute to a Roth IRA, usually a custodial Roth IRA opened by a parent. For 2026 the contribution ceiling is the lesser of $7,500 or the amount of eligible compensation the person actually earned. A teenager who earned $4,000 can contribute up to $4,000.

Why this matters more for a sixteen-year-old than anyone else: time. Money contributed at sixteen has roughly fifty years to compound. Contributions go in after tax, which is nearly costless for a teenager who owes no tax anyway, and qualified growth comes out tax free.

One example. A single $3,000 contribution at sixteen, at a 7% average annual return, is worth roughly $88,000 at sixty-six. The same $3,000 contributed at thirty-six is worth roughly $22,700. The twenty-year delay costs about $65,000.

There is also a flexibility feature that eases parental nerves. Contributions, as distinct from earnings, can be withdrawn at any time without tax or penalty. The money is not locked away the way a 401(k) is, which matters for a teenager who may need it for a car or tuition.

The usual objection is that a teenager will not put a real job's earnings into an account they cannot touch for fifty years. Which brings up the arrangement that solves this.

Most teenagers will not voluntarily hand over a third of their earnings to a retirement account. Almost all of them will do it if somebody matches.

The structure is simple. For every dollar the teenager puts into the Roth, a parent or grandparent puts in a dollar, up to whatever the family can afford and up to the teenager's actual earned income. The teenager keeps the rest of their paycheck to spend, which is the part that makes the deal acceptable.

Two things happen at once. The teenager learns what an employer match is, which they will meet again at their first salaried job and which a startling number of adults leave unclaimed. And the account gets funded at an age where compounding does most of the work.

Families setting this up often write the match down, with a stated rate and cap, because it makes the arithmetic explicit and a teenager who negotiates the terms is more invested in the outcome. The Foundra kids resources include a one-page version, though a note on the fridge accomplishes the same thing.

One boundary: total contributions can never exceed what the teenager actually earned. If they earned $2,000, contributions are capped at $2,000 regardless of who funded them.

Before day one. Locate the Social Security card and photo ID. Check your state's rules on work permits for the teenager's age.

With the W-4 in hand. Estimate total earnings for the calendar year. If it is comfortably under $16,100 and comes only from wages, discuss claiming exempt. If it might approach that number, or there is other income, let the withholding run and file for the refund.

First paycheck. Sit down and read the stub together, line by line. Gross pay, federal withholding if any, Social Security, Medicare, state tax, net. Nearly every teenager is surprised by the gap between gross and net, and that surprise is the most effective financial lesson in this entire sequence.

Within two weeks. Open the custodial Roth if there is earned income, and agree on the match rate. Doing this early, while the job is novel, works better than raising it in April.

In January. File the return, even if no filing is required, to recover any withholding.

Treating a first job as only spending money. The default outcome is that the entire paycheck is consumed and nothing is learned about what earned income makes possible. The Roth conversation has to happen early or it does not happen.

Skipping the return because filing is not required. This leaves real money with the IRS. Filing a simple return for a teenager takes under an hour and is free through several IRS-supported options.

Claiming exempt without checking. If a teenager works more hours than expected, or holds two jobs, or has investment income, an exempt claim can leave them owing at filing time. Estimate first.

Opening a custodial brokerage instead of a Roth by default. Both have uses, but the Roth's tax treatment is far better for a teenager with earned income, and the earned income requirement is the only thing standing between most adults and the same opportunity.

Doing all of it for them. The point is not to optimize a few hundred dollars. It is that a teenager watches the process once and can repeat it for life. Let them fill in the forms.

Does my teenager have to pay Social Security and Medicare? Yes, in nearly all cases. Those are withheld regardless of income level and regardless of exempt status on the W-4. A narrow exception exists for children under eighteen employed by a parent's unincorporated business.

What counts as earned income for a Roth contribution? Wages reported on a W-2, and self-employment income such as babysitting, lawn care or tutoring, provided it is documented. Allowance, gifts and investment income do not count.

Can a grandparent fund the Roth instead of the teenager? Yes. The money can come from anyone. The constraint is that total contributions cannot exceed the teenager's own earned income for the year.

What happens to a custodial Roth when they turn eighteen? Control transfers to them at the age of majority in your state. This is worth saying out loud in advance, since it is the practical reason to spend the teenage years explaining what the account is for.

Will a Roth IRA hurt financial aid eligibility? Retirement accounts are generally not counted as assets in the federal aid formula, though withdrawals can count as income in the reporting year. A custodial brokerage account, by contrast, is assessed as a student asset at a high rate.

What if my teenager is self-employed? Self-employment income still counts for Roth purposes, but it triggers self-employment tax once net earnings pass $400, and there is no employer withholding. Keep records from the first dollar.

1. 401(k) Limit Increases To $24,500 For 2026, IRA Limit Increases To $7,500, Internal Revenue Service
2. Summer Jobs And Taxes: Helping Teens Navigate IRS Rules, University of Illinois Tax School
3. A Parent's Guide To Their Teen's First Job: Taxes, Savings And Forms, Westminster Wealth Management
4. Roth IRA Contribution And Income Limits For 2026, Fidelity
5. How To Fill Out A W-4 For A Teenager, 2026 Step-By-Step Guide