Disparate impact comes to mind. Why would you hold a blue collar [for example] worker to 40% but allow a farmer/self-employed person 60%?
We calculate a DTI on all loans subject to ATR. Salaried, self, everyone. It's not that difficult.
FWIW, I feel DSCR's have gone way beyond what they once were intended to be. When a DSCR made sense was when you looked at the income vs expense on a specific PROJECT, whether it be rental properties or a strip mall and not an entire global picture of a 'company'.
But, I digress.
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My opinion only. Not legal advice.
Say you'll haunt me - Stone Sour