You are considered a Household Employee. Household employees under the age of 18 are not considered self-employed business owners for tax purposes and so they do not pay self-employment tax. If that's the case, then you would merely include your household employee income on Line 7 of Form 1040 and note “HSH” and the related subtotal amount on the dotted line to the left of the line 7 total amount (Google "Teens and Taxes").
