Ad revenue from your channel, sponsorship payments, affiliate commissions, paid appearances: if you are building an audience and brands are paying for access to it, the IRS has a category for you, and it is not "athlete's spouse." It is self-employed business owner, with everything that status carries.
Content income files on Schedule SE, not on his return
Self-employment status attaches to the person who earns the money. Your content business is yours alone, even though you file a joint return, even if his fame grew the audience, and even if his money funded the equipment. You report revenue and expenses on your own Schedule C, and the net profit flows to Schedule SE, where self-employment tax is calculated at 15.3% on your earnings, covering your own Social Security and Medicare record. That last part is worth pausing on: paying self-employment tax builds your personal Social Security earnings history and can open the door to your own retirement plan contributions, a SEP IRA or solo 401(k) funded from your business profit. In a household where one career is short and physically risky, income and retirement savings in your own name are not just tax mechanics, they are planning.
The $400 threshold for a growing page
Self-employment tax starts once your net earnings for the year pass $400. That is net, revenue minus expenses, so a first year of modest sponsorships and heavy spending on gear may owe nothing. But the threshold is low, and one paid partnership usually clears it. Below $400 you may still owe income tax on the profit even without self-employment tax, and above it you file Schedule SE with the joint return. A genuine hobby, an account run with no profit motive, no brand deals, no monetization, is different: hobby income is reported without self-employment tax, but hobby expenses are not deductible, so the hobby label is rarely the good deal it sounds like once real money arrives. Consistent sponsorships, invoices, and a business bank account make profit motive, and business treatment, easy to establish.
Joint return, separate business math
On a joint Form 1040, your Schedule C profit stacks on top of his salary, which typically means it is taxed at the household's top marginal rate plus your 15.3%. Two consequences follow. First, deductions are worth a lot: camera and lighting equipment, editing software, a qualifying home office, styling and travel with a documented business purpose. Second, prepayment matters: with nothing withheld from your income, the household avoids underpayment penalties by increasing his paycheck withholding or by making quarterly estimated payments with Form 1040-ES once your business will add $1,000 or more to the year's tax. Run it like the business it is, in your own name, and both the tax bill and the paper trail behave.