For the state, you can provide your "personal" EIN if you like. But I'd feel fine giving them my SSN since the state already has it in numerous databases already. But for an individual I was babysitting for, I would only give them my EIN. Of course, the EIN would need to be registered either in your name or you babysitting business name.
For the rentals, you'd need a separate EIN for that, because that is a separate "business" that has no relationship what-so-ever to the babysitting business. That EIN should be registered with the IRS in your legal name, since SCH E rentals don't have a "business name" per-se, and are not tax the same as your babysitting business is. Then for 1099's you issue to contractors for providing a product or service to your rental business, you use that separate EIN on their 1099-MISC's you issue them.
As I stated earlier, I flat out refuse to provide my SSN to anyone unless they can demonstrate and valid and legal need for my SSN, instead of my EIN. I myself have two EIN's. One is for my SCH C business, and the other is just in case I need to issue a 1099-MISC for anything related to my rentals. so far, I've never had to issue anything for the rental properties. But I'm sure my luck will run out at some time on that.
