Do I owe taxes on my side hustle if I have a full-time job?
Yes — side hustle income is taxable from dollar one, even with a W-2 job. But how it works surprises people in both directions.
The bad surprise: your side income stacks on top of your salary, so it's taxed at your HIGHEST bracket, plus 15.3% self-employment tax once your net side profit passes $400. A $10,000 side hustle can easily mean $3,000+ in extra tax that nothing withheld for.
The good surprise: your side hustle unlocks deductions your W-2 never could. The portion of your phone, home internet, and workspace used for the hustle. Miles driven for it. Equipment, software, supplies, courses. Your day job can't deduct anything; your side business can.
The myth to ignore: "under $600 doesn't count." The $600 line is just when platforms must SEND you a 1099. Your obligation to report starts at the first dollar either way.
Practical move: either bump your W-2 withholding to cover the side income, or set aside 25-30% of side profit as it comes in. The people who get wrecked in April are the ones who did neither.
Toozi is an app where you can run all your side hustles from one text thread — bookkeeping, taxes, and IRS filing included. Free to start.
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