Income taxes with no other income.

[Yengkong Sayaovong]

If I don't have a job income but have income from my rental homes. Would I still be able to do taxes? Or would I have to get a business ID in order to claim taxes if I want to do rentals full time and not work anymore?

I'm in school right now and eventually will leave my job come 2020 cause my class hours doesn't work with my job hours anymore.

I only have 1 duplex and 1 single house right now.