Under the Wages & Income tab select the "Explore On My Own" option (if presented)
Then scroll down to Business Items and elect to start/update Business Income & Expenses (SCH C)
Since you earned more than $400 at babysitting, you are considered to be self-employed as far as the IRS is concerned, for all income earned in that business. So be aware that you will pay BOTH the employee side and the employer side (Self-Employment Tax) of the taxes on that income, and ONLY on that income.
EDIT: 1/11/2015 -- This post has been here since 2013, and I note folks are still finding it useful for their 2014 tax return. So let me add some additional information to help avoid potential problems due to tax law changes for 2014.
If you had "any" income from babysitting in 2014 regardless of the amount, you need to report that income. If that babysitting income is more than $400, only then will you also pay the additional Self-Employment tax.
