Critics of the proposed regulation include those who otherwise have no debt, but whose mortgage alone would constitute a higher percentage of income. The reasons behind these kinds of regulations include the securities created from mortgage loan debt. Mortgages that meet the requirements will be exempt from exclusion from mortgage-backed securities derivatives. Critics also claim that such regulations will hinder those who are able to buy homes with cash, who have larger down-payments, but carry other debt and those who might otherwise have circumstances that would support favorable borrowing.
Proponents site an inability to predict changes in earnings, medical or health issues and things like a couple deciding to have a child and forego a certain portion of their income so that one spouse might stay at home to care for the child. Since discretionary income expenditures are not easily predictable, as well, there will be less risk to banks if loans are more heavily scrutinized. Overall, the thought is that the buyers and banks will be better off with greater oversight in the long term.