Tag Archives: mortgage default

Wednesday’s Academic Roundup

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Wednesday’s Academic Roundup

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Frannie Conservatorships: What A Long, Strange Trip It’s Been

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The Federal Housing Finance Agency Office of Inspector General has posted a White Paper, FHFA’s Conservatorships of Fannie Mae and Freddie Mac: A Long and Complicated Journey. This White Paper on conservatorships updates a first one that OIG published in 2012. This one notes that over the past six years,

FHFA has administered two conservatorships of unprecedented scope and simultaneously served as the regulator for these large, complex companies that dominate the secondary mortgage market and the mortgage securitization sector of the U.S. housing finance industry. Congress granted FHFA sweeping conservatorship authority over the Enterprises. For example, as conservator, FHFA can exercise decision-making authority over the Enterprises’ multi-trillion dollar books of business; it can direct the Enterprises to increase the fees they charge to guarantee mortgage-backed securities; it can mandate changes to the Enterprises’ credit underwriting and servicing standards for single-family and multifamily mortgage products; and it can set policy governing the disposition of the Enterprises’ inventory of approximately 121,000 real estate owned properties. (2)

I was particularly interested by the foreward looking statements contained in this White Paper:

Director Watt has repeatedly asserted that conservatorship “cannot and should not be a permanent state” for the Enterprises. Director Watt has indicated that under his stewardship FHFA will continue the conservatorships and build a bridge to a new housing finance system, whenever that system is put into place by Congress. In this phase of the conservatorships, FHFA seeks to place more decision-making in the hands of the Enterprises. (3)

Those who have been hoping that the FHFA will act decisively in the face of Congressional inaction should let that dream go. And given that just about nobody believes (I still hope though) that there will be Congressional reform of Fannie and Freddie during the remainder of the Obama Administration, we must face the reality that we are stuck with the conservatorships and all of the risks that they foster for the foreseeable future. Today’s risks include historically high rates of mortgage delinquencies and exposure to defaults by counterparties like private mortgage insurers. As I have said before, the risks that Fannie and Freddie are nothing to laugh at. Let’s hope that the FHFA is up to managing them until Congress finally acts.

Wednesday’s Academic Roundup

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Kroll on Mortgage Performance

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The Kroll Bond Rating Agency has issued an update of its residential mortgage-backed securities model methodology, Residential Mortgage Default and Loss Model. Before the financial crisis, ratings models seemed to be very reliable, data-driven models of probity and caution. We have since learned that different mortgage vintages (the year of origination) can behave very differently and ratings models could be based on simplistic assumptions. Hopefully, the updated Kroll model does not suffer from those flaws, although their key takeaways seem pretty basic to me:

  • Underwriting standards are the fundamental determinant of mortgage quality.
  • Negative home equity creates a major incentive for borrower default, resulting in substantial credit loss.
  • Credit scores continue to have value as a relative indicator of risk.
  • Inflation of real home prices above the long-term mean is unsustainable and represents increased credit risk. (4-5)

Kroll’s update does include some interesting revisions, including,

Reduced default expectations for purchase loans. It has long been observed that purchase loans generally have lower default risk than refinancings, all else being equal. This is attributed to the fact that a purchase represents an actual arms-length transaction which yields a more accurate view of a home’s value than an equivalent refinancing transaction. However the pre-crisis mortgage vintages showed high levels of default associated with purchase mortgages. This was largely due to the practice of extending credit to first time homebuyers, often on very favorable terms despite these borrowers having little credit history or poor credit history. This poor performance by purchase loans was reflected in the historical data regression analysis used to develop the RMBS model.

Based on analysis focused on both jumbo and conforming prime mortgages, KBRA has found that, for these loans, the traditional benefits of purchase loans remain well established, and we have adjusted the model ‘s treatment of purchase loans to reflect lower default expectations relative to equivalent refinancing mortgages. This revision is effective with the publication of this report.

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Penalty for high debt-to-income (DTI) loans. While the KBRA RMBS model does not contain a specific risk parameter based on DTI, it is our opinion that very high DTI loans can bear significant incremental risk. When we began to encounter newly originated loans with back-end DTIs in excess of 45%, we assigned an additional default penalty to such loans. This has been documented in presale reports for those rated RMBS backed by loans with high DTIs. (3)

Time will tell if Kroll got it right . . ..

Risky Cash-Out Refis

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Anil Kumar of the Dallas Fed has posted Do Restrictions on Home Equity Extraction Contribute to Lower Mortgage Defaults? Evidence from a Policy Discontinuity at the Texas’ Border to SSRN.  The abstract reads

Given that excessive borrowing helped precipitate the housing crisis, a key component of a policy agenda to prevent future meltdowns is effective regulation to curb unaffordable mortgage debt. Texas is the only US state that limits home equity borrowing to 80 percent of home value. Anecdotal reports have long suggested that home equity restrictions shielded Texas homeowners from the worst of the subprime mortgage crisis. But there is, as yet, no formal empirical investigation of these restrictions’ role in curbing mortgage default. This paper is the first to empirically estimate the impact of Texas home equity restrictions on mortgage default using individual and loan level data from three different sources. The paper exploits the policy discontinuity around Texas’ interstate borders induced by the home equity restrictions to identify the causal effect of home equity extraction on mortgage default in a border discontinuity design framework. The paper finds that limits on home equity borrowing in Texas lowered the likelihood of mortgage default by about 2 percentage points with a significantly larger impact on mortgage borrowers in the bottom quartile of the credit score distribution. Estimated default hazards for mortgages within 50 to 100 miles of the Texas’ border decline sharply as one crosses into Texas. Overall, the paper finds evidence that Texas’ home equity restrictions exert a robust negative impact on mortgage default.

This is a really important paper asking a really important question.  If its findings are confirmed, it brings us back to that age-old question of paternalism in consumer financial protection: should we limit a consumer’s choice if that choice is consistently shown to have harmful effects?  I am not sure where I come down in this particular case, but I wonder if some version of Quercia et al.‘s benefit ratio could help measure the costs and benefits of such a rule. The benefit ratio compares “the percent reduction in the number of defaults to the percent reduction in the number of borrowers who would have access to [a certain type of] mortgages.” (20) I am not sure whether access to cash out refi mortgages is of the same import as purchase mortgages or even plain old refis, but the concept of the benefit ratio might still make sense in this context.