Low income rental screening question.

[David Albertson]

I have a SFR in a low income area. I just received an application (with application fee) from a single mother. The local screening service I use didn't come up with any criminal history, but did come up with one rental judgement from 2001 and one medical judgement from 2002 that has been paid. She also has about $8400 worth of unpaid medical bills that have been placed for collection.

My question is, if I call to verify employment, is it leagal to ask how much her monthly income is? Also, if I were to do a month to month lease and she didn't pay, would I still have to go thru the eviction process to get her out?