Dev's Gig Income, Self-Employment Tax and the Missing Withholding
Dev is 19, a full-time community college student who lives with his parents, who cover his housing and most food. He works 25 hours a week at a cafe and earned $17,400 in wages last year, with $610 of federal income tax withheld. He also runs deliveries through a gig app that treats him as an independent contractor: the app paid him $8,900 and his records show $2,100 of mileage and supplies, so his net self-employment income is $6,800. Nothing was withheld from the gig money and he made no estimated payments. He did not file a return the year before because his wages alone were below the standard deduction. His parents intend to claim him as a dependent. He has $1,900 in savings and wants to buy a $1,400 laptop in March. Assume the standard deduction for a single filer is $14,600 and that these two jobs are his only income.
1. Does Dev have a filing requirement, and roughly what will he owe or get back? Show the calculation.
Read the worked answer
He must file. Net self-employment income of $6,800 is well above the $400 threshold that triggers a filing requirement, regardless of the standard deduction. Last year's non-filing is not a precedent, because he had no self-employment income then.
The calculation (assumptions stated):
- Total gross income: $17,400 + $6,800 = $24,200.
- Self-employment tax: $6,800 × 92.35% = $6,280 net earnings; × 15.3% = ≈ $961. This is Social Security and Medicare - the employee half an employer normally pays, which the app does not.
- Half of SE tax is deductible above the line: $961 ÷ 2 ≈ $480. Adjusted gross income = $24,200 − $480 = $23,720.
- Taxable income: $23,720 − $14,600 = $9,120. He gets the full standard deduction despite being a dependent, because his earned income exceeds it.
- Income tax: at the 10% bracket, ≈ $912.
- Total liability: $912 + $961 = ≈ $1,873. Less $610 withheld → about $1,263 due.
The point he is missing: the gig money is taxed twice over - once as income and once as self-employment tax - and nothing was withheld from it. Earning 'only' $24,200 does not mean owing nothing; the SE tax is what bites.
2. How should Dev handle the bill and stop it from recurring next year?
Read the worked answer
This year: he can pay the ~$1,263 from the $1,900 in savings, but that leaves about $640 and the laptop is no longer affordable in March. File on time, and pay what he can with the return; an installment agreement is available if needed. Filing late is far more expensive than paying late.
Cash discipline going forward: move 25–30% of every gig deposit to a separate savings account the day it arrives. On $8,900 of receipts that is roughly $2,200–2,600 held back, which comfortably covers the SE tax plus his share of income tax. The correct frame is that he is a small business with a tax liability, not an employee receiving extra pay.
Avoiding the penalty next year - two legitimate routes:
- Quarterly estimated payments (typically April 15, June 15, September 15, January 15). He pays tax as he earns it.
- Extra withholding at the cafe job via a new W-4. Withholding is treated as paid evenly through the year, so this is simpler and often avoids penalties even if a balance is due in April.
The safe harbor: pay at least 90% of the current year's tax or 100% of last year's total tax (110% if prior-year AGI exceeded $150,000). Meeting either test avoids the underpayment penalty even if he still owes a lump sum in April. The penalty is interest-like, not a flat fine - but it is avoidable for free.
3. Dev's parents plan to claim him as a dependent. What does that change about his return, and what should he tell them?
Read the worked answer
His own filing obligation does not change. A dependent with self-employment income above $400 still files his own return and reports the same $24,200. Being claimed does not transfer his income to his parents' return.
What it does affect:
- Education credits. The American Opportunity Credit generally goes to whoever claims the student and paid the qualified expenses, so the parents should claim it if they paid tuition. It cannot be claimed twice.
- Dependency tests. As a full-time student under 24 living at home, he is likely a qualifying child, provided he did not provide more than half of his own support. His $24,200 of income is a real input to that test, so the family should check it rather than assume.
- His standard deduction is unaffected here because his earned income exceeds the $14,600 figure.
What he should tell them: his total wages, the 1099 net figure, and the fact that he will owe about $1,263. Coordination matters because two returns describing the same scholarship, tuition or support facts inconsistently is a standard audit trigger.
What he should not do: let a preparer 'solve' the bill by leaving the 1099 income off. The app files an information return, the matching program will find it, and a negligent or fraudulent omission costs far more than $1,263.