New on FinoLib · Volume V: Personal Finance
New on FinoLib, my finance education website: I have published an article called Financial Literacy for Teens and Students: Money Basics, from Volume V: Personal Finance. It is part 1 of a 2-part guide. Here is what the article explains, written as a short expert briefing; the full piece, with every worked example, is one click away.
The idea in plain words
Before your first paycheck, a few rules are worth knowing. Some tax comes out of every check, even a small one, and that is normal. If you earn only a little, you may owe no income tax but still need to file a return to get the withheld money back. A debit card spends your own money, while a credit card borrows the bank’s. A credit file starts only when accounts are reported in your name. The costliest mistakes at this age are scams and fees, not picking the wrong investment.
Key points
■FICA takes 7.65% of wages at any age, except for work in a parent’s sole proprietorship or household work in someone’s home while under 18.
■A dependent’s 2026 standard deduction is earned income + $450 (at least $1,350, at most $16,100); investment income above $2,700 is taxed at the parents’ rate.
■Self-employed work such as dog-walking or tutoring owes 15.3% self-employment tax on 92.35% of profit once net earnings reach $400.
■A custodial Roth IRA takes up to the lesser of earned income or $7,500 (2026), and contributions can be withdrawn at any time without tax or penalty.
A closer look
Financial literacy means learning how a paycheck, a bank account and a credit file work before a mistake with them costs thousands rather than tens of dollars. This section is financial education for teens and students with little or no income yet: the machinery of 1.6, scaled down to a first job.
Why the first paycheck looks small. Hours × wage is gross pay. Before anything reaches your account, the employer withholds FICA — 6.2% for Social Security plus 1.45% for Medicare, 7.65% in total — on almost every dollar of wages, at any age. It may also withhold federal income tax, and state tax where your state has one. The first check can be smaller still if your employer pays in arrears and it covers only part of a pay period.
The W-4 in plain terms. Form W-4 tells your employer how much federal income tax to withhold; it does not change what you owe. Payroll software treats each check as if you earned that amount every pay period of the year. If you had no federal income tax liability last year and expect none this year, you can check “Exempt from withholding” on the 2026 form — valid for 2026 only (a new W-4 is due by February 16, 2027), and it never stops FICA.
A worked example
Worked Example — Compare the Scenarios: Three Ways to Earn the Same $4,800
The same 16-year-old dependent earns $4,800 over the summer in three different setups. Federal income tax owed is $0 in all three, because the dependent standard deduction of earned income + $450 covers it; what differs is Social Security and Medicare, and the paperwork. A. Payroll job (store, camp, restaurant) B. Self-employed (dog-walking, tutoring, lawn care) C. Working in a parent’s sole proprietorship Social Security and Medicare $4,800 × 7.65% = $367.20 $4,800 × 92.35% × 15.3% = $678.22 self-employment tax $0: a child under 18 working for a parent is exempt Kept, once any withholding is refunded $4,432.80 $4,121.78 $4,800.00 Must file a return?
Under the hood
Under the Hood: Why a Teen’s Wages Are Sheltered but Investment Income Is Not
The dependent standard deduction is built to protect work, not wealth. It is the greater of $1,350 or earned income + $450, capped at the regular $16,100 (2026), so each dollar a dependent earns by working raises the deduction by a dollar, and wages up to $16,100 are free of federal income tax. Interest, dividends and gains get only the $1,350 floor. The kiddie tax closes the remaining gap for families that might shift investments into a child’s name to use the child’s low bracket: in 2026 a child’s unearned income above $2,700 ($1,350 untaxed, the next $1,350 taxed at the child’s rate) is taxed at the parents’ rate.
Where Experts Disagree
The standard view: teaching money skills early improves later financial behavior, which is the case for high school personal finance courses and for sections like this one. Its assumptions: what is learned at 16 is still remembered, and acted on, at 25. The alternative: a 2014 meta-analysis by Daniel Fernandes, John Lynch and Richard Netemeyer (Management Science) found that interventions to improve financial literacy explained only 0.1% of the variance in the financial behaviors studied, and that even large programs…
What the full article covers
The full article includes worked examples, a look under the hood at the mechanics, a recap, a reveal-on-click quiz and the official sources behind every figure.
Volume V: Personal Finance
Read the full article on FinoLib
The complete article, Financial Literacy for Teens and Students: Money Basics, with every worked example, diagram, quiz and source, is free to read in Volume V, Personal Finance on finolib.com.
Explore the Finance Education Series: Vol. II — Capital Markets · Vol. I — Global Economy · Vol. III — Finance Encyclopedia · Vol. IV — Finance Careers · Vol. V — Personal Finance