I work a normal job and sometimes babysit on the side. How do I add income from both on the tax forms? Also, is there anything special I need to prove babysitting income?

[rollercoaster0]

I babysit for a family member. It's not for a business or anything like that.

[Hal_Al]

You will get a form W-2 for your normal job. You will enter that as wages. 

The IRS considers  undocumented cash income (no W-2 or 1099-MISC), for work performed, to be self employment income. Enter that, separately, at "Business Income & Expenses" and TurboTax (TT) will complete Schedule C or C-EZ for you and allow you to deduct any expenses associated with this income. You'll also have to pay self employment tax (social security) on any profits greater than $400*.

You do not provide any special documentation for the baby sitting income, with your tax forms. The schedule C covers that. However, if are using this income to claim the earned income Credit (EIC), it's a good idea to keep records of the income, in case of an audit. records of bank deposits are particularly helpful.

*If you babysit in the customer's home, instead of yours, and the amount you were paid for the whole year was less than $1900, there is a way to avoid the  self employment tax. But, you will also not get credit for these wages with the Social Security Administration, for future benefits. Comment back for alternate instructions

[rollercoaster0]

I made $1000 from babysitting and babysat in my own home. I don't need to add the money for an EIC. Thanks for the help.

[SweetieJean]

But you still must claim it.