The article linked in the post has a discussion of alternative interest rates.
]]>We used 73bps as the private mortgage insurance rate in our calculation. The amount of private mortgage insurance is treated as part of the mortgage payment (PI) in the chart, as it depends on the amount of loan. The tax and insurance (TI) in the chart includes the property tax and homeowner insurance, which are closely related to the property value.
]]>Yeah the math checks out. Looks like they are using 50bps in the chart.
Probably a more helpful data point is “DTI of a median house with a median income”.
]]>Steve, the analysis uses 73 bps. The underwriting parameters have remained fixed for some time to allow comparisons.
]]>But one actual question that I have is, why are you using 28% DTI to determine affordability in today’s market? Of course this is the Ideal front end ratio and related to the old rule 28/36 (28% front end and 36% backend ratios).
Today banks are willing to go <43% conventional, FHA allows up to 58%, Fannie up to 50% and VA up to 55%. So, people are stretching themselves today and banks are allowing it.
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