You have to file your own tax return whether or not you are a dependent. You cannot report your self-employment income on your parent's tax return. Since you already have more than $400 of self-employment income you will have to file a tax return for 2025, no matter what else happens.
You never "file taxes quarterly." If you have more self-employment income you might have to make quarterly estimated tax payments. But as of now it is not necessary for you to make a quarterly estimated tax payment. Your self-employment tax on $2,800 would be $396. Since that's less than $1,000 you can just pay it when you file your tax return after the end of the year. If you want to, you can make an estimated tax payment by June 15, but you don't have to. If you have more self-employment income later in the year, you can reevaluate the situation.
You might not have to pay the full $396. You have not given enough information to know whether you might qualify for credits or deductions that would reduce your tax. If you make a payment of $396 now, and it turns out that you don't actually have to pay that much, you will get a refund.
You are probably aware that Congress is currently considering a tax bill that might make changes that affect 2025, so whatever we say now is subject to change.
@krizorilla-imp
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