A first paycheck is one of the most powerful teaching moments in a young person’s financial life. Suddenly the abstract concepts — taxes, withholding, FICA, gross vs net pay — become concrete numbers on a pay stub. Done right, the first job introduces direct deposit, automatic savings, the W-4 form, and the discipline of living on what arrives in the account rather than what was earned. Done casually, the teen learns nothing about how taxes work and starts adult life still confused about every pay stub they’ll ever see.
Before the First Day
Several setup items happen before the teen earns a dollar:
- Social Security number — every employer needs it. If the teen doesn’t know their own SSN, this is the time to share it. Memorize or keep it secure
- Work permit — required in many states for workers under 16, sometimes under 18. Usually obtained from the school district. Check state-specific rules at the U.S. Department of Labor’s youth-employment site
- I-9 form — verifies eligibility to work in the U.S. Filled out at hiring. Requires identity documents (passport, OR driver’s license + Social Security card)
- W-4 form — tells the employer how much federal income tax to withhold. For most teens, claiming “exempt” is wrong unless they made nothing last year and will make under the standard deduction this year. See below
- Bank account for direct deposit — most employers require it. See Teen Banking for setup. Some employers still offer paper checks but direct deposit is faster and cheaper
Reading the First Paycheck
A typical teen pay stub shows several deductions between the gross pay (what they earned) and net pay (what arrives in the bank). Walk through one together:
- Gross pay — hours worked × hourly rate. The headline number
- Federal income tax — based on the W-4. For teens earning under the standard deduction (~$14,600 for 2024 single filers; updates annually), this is often $0 or very small — and any amount withheld gets refunded at tax time
- Social Security tax (FICA) — 6.2% of gross. Funds Social Security. Not refundable
- Medicare tax (FICA) — 1.45% of gross. Funds Medicare. Not refundable
- State income tax — varies by state. Some states (TX, FL, WA, NV, SD, WY, TN, NH, AK) have no state income tax for wages
- Local taxes — some cities and counties also withhold
- Net pay — what lands in the bank account. Usually 75–85% of gross for a teen
The 15–25% gap between gross and net is the lesson. Most adults think they make their gross salary; they actually live on net. Teens who understand this from job one have a more realistic model of every job offer they’ll ever consider.
The W-4 in 60 Seconds
The W-4 tells the employer how much federal income tax to withhold from each paycheck. For most teens with a single job:
- Step 1 — basic info (name, SSN, address). Check “Single”
- Steps 2–4 — for additional income, deductions, or specific withholding adjustments. Most teens leave these blank
- Step 5 — signature
Some teens want to claim “exempt” (write “Exempt” below step 4c). This is allowed only if you owed $0 last year AND expect to owe $0 this year. For teens earning less than the standard deduction, this is technically valid but can backfire if income rises mid-year. Safer choice: leave it blank, get a refund at tax time.
FICA Doesn’t Care How Little You Earn
Federal income tax has a standard deduction — the first ~$14,600 of wages owes $0 in federal income tax for a single filer (figure updates each year). FICA (Social Security + Medicare = 7.65%) has no such threshold. Every dollar of wages from dollar one gets 7.65% taken for FICA. A teen who earns $3,000 over the summer pays $0 federal income tax but $229.50 in FICA.
This is normal. FICA funds future Social Security benefits and current Medicare. The teen is starting to build a Social Security earnings record — eventually those wages count toward their own future benefit.
Setting Up Direct Deposit and Auto-Savings
- Single account direct deposit — the entire paycheck goes to checking. Simple but lets the teen spend it all
- Split direct deposit (recommended) — many employers let you split pay between two accounts. Send a fixed dollar amount or percentage to savings, the rest to checking. The savings hit is automatic and invisible
- Same-day transfer rule — if split deposit isn’t available, manually transfer a fixed amount to savings the day pay lands. Don’t wait until the end of the week. The behavioral research is clear: out of sight, out of spend
- Roth IRA auto-contribution — teens with earned income can fund a Roth IRA. Even $25/paycheck adds up. See Roth IRA for Minors
How Much Should a Teen Save?
Teens have an enormous advantage that adults don’t: they have no rent, no car payment, no insurance, no real obligations. Almost every dollar they earn could be saved. The realistic targets:
- Bare minimum: 25% — saving a quarter of every paycheck still leaves three quarters to spend. Hard to argue with
- Strong target: 50% — for a teen with no major expenses, saving half is realistic and builds an excellent habit
- Going for it: 75%+ — teens funding a Roth IRA AND a separate “first car / college spending money” goal can hit 75% on a summer-job paycheck
The exact percentage matters less than the principle: spend what comes after savings, not the other way around. This is the rule that 90% of adults never learn.
Tax Filing for Teens
A teen who earns under the standard deduction (~$14,600 for 2024, updated yearly) generally owes no federal income tax. Still:
- File a return if any federal income tax was withheld — to get the refund. Free options include IRS Free File, IRS Direct File (in eligible states), or a free e-filer like Cash App Taxes
- Self-employment income (babysitting, lawn mowing) is different — under $400 in net self-employment income generally doesn’t require filing; $400+ does, even if no FICA was withheld
- Keep the W-2 — arrives in January following the year worked. Needed for filing. Most are now electronic
- Parents can claim the teen as a dependent on the family return; the teen still files separately for their own income. Tax software walks both through correctly
Common Mistakes
- Blowing through the first paycheck — the dopamine of money landing in your own account is real. Set up split deposit or a same-day transfer before the first paycheck arrives
- Spending based on gross pay — budgeting on the headline hourly rate rather than what actually lands in checking
- Skipping the W-4 carefully — getting withholding wrong means owing money at tax time or losing the use of money via over-withholding all year
- Never filing a return when tax was withheld — leaves a refund on the table
- Skipping the Roth IRA — the teen years are the highest-leverage time to contribute to a Roth. $1,000 contributed at age 16 at 7% real return becomes ~$23,000 at age 65, tax-free
The Bottom Line
A first job is a money-education event as much as a paycheck event. Walk through the W-4 together. Read the first pay stub line by line. Set up split direct deposit so savings happens before spending. Fund a Roth IRA if at all possible — the compounding math is enormous. File a tax return at year-end to recover any withheld federal tax. A teen who treats the first job this way enters adult financial life already understanding gross vs net, FICA, the standard deduction, direct deposit, and pay-yourself-first — concepts most adults never master.