Then the real discrimating factor is that owners ask for income equal to at least 4-6 times rent to let you in (plus, of course, 2-month rent as a guarantee, which you know you'll have trouble getting back) In the long run, we're all dead. John Maynard Keynes
In San Francisco it's typically 3 times monthly required but that's just so they don't throw your application away immediately. The best credit score, employer, wage and fastest checkbook typically take the space.