#United States #New York #Andrew Davidson #Tri-Merge Standard #Mortgage Underwriting

The Impact of Changing Mortgage Underwriting Standards

In a recent study released by Andrew Davidson & Co., Inc. (ADCo), the potential repercussions of moving from the widely used tri-merge standard for mortgage underwriting to a bi-merge or single-report standard have been thoroughly examined. This research emphasizes how such a transition could lead to significant inaccuracies in mortgage pricing and borrower qualification, ultimately raising the stakes for both consumers and investors in the mortgage market.

Key Findings of the Research

The study, titled "The Impact of Moving Away from the Tri-Merge Standard," delves deeply into how this shift may alter the mortgage ecosystem. Utilizing a comprehensive dataset of VantageScore 4.0 credit scores, the analysis is based on information sourced from the three major consumer reporting agencies: Equifax, Experian, and TransUnion. Key findings from this research are crucial for understanding the stakes involved in this potential industry transformation:

1. Variability in Scores: The study found that scores derived from only a single NCRA can often differ from the existing tri-merge standard, which averages three scores. Among the 245 million consumers analyzed, 35% exhibited at least a 10-point disparity from the tri-merge standard, while 18% showed a difference of 20 points or more.

2. Implications for Loan Pricing: Particularly for consumers ranked in the 640–779 credit score range, even minor score discrepancies can lead to significant financial implications. For instance, a shift in pricing buckets can either drastically increase or save a borrower $3,000 to $5,000 in present value costs over the life of a loan valued at $350,000 with a 90% loan-to-value ratio.

3. Challenges for Lower-Scoring Borrowers: The analysis revealed that lower-scoring borrowers (those with scores between 600 and 639) face heightened risks when shifting from a tri-merge standard. Approximately a quarter of these consumers had one credit score diverging from the tri-merge standard by at least 20 points, indicating potential challenges in securing favorable loan terms.

4. Manipulation of Score Outcomes: In a framework where lenders might select the credit score that suits their needs best, the report raises concerns about moral hazards. Around 9% of all consumers, and 11% within the 640–779 range, might benefit from inflated credit scores when using a single score's evaluation instead of the tri-merge standard.

5. Impact on Minority Borrowers: The shift from the tri-merge framework could disproportionately affect minority borrowers, as the risk assessment becomes less precise, further exacerbating existing disparities in mortgage lending.

The Importance of Comprehensive Risk Assessment

Sanjeeban Chatterjee, Director of Behavioral Modeling at ADCo, states, "We are currently witnessing a modernization phase in the mortgage industry. It's paramount for stakeholders to comprehend the consequences of such changes in order to make informed decisions." The results of this research underscore that a pervasive understanding of risks—arising from data thoroughness and accuracy—can significantly alter the risk landscape and influence affordability for consumers.

A robust credit score is vital for predicting the creditworthiness of a borrower, and the variability witnessed with single-agency data illustrates the need for a tri-merge approach to ensure comprehensive risk assessment. Overall, this study provides critical insights into the inadequacies of bi-merge or single-report scoring mechanisms, with direct implications for loan pricing and underwriting strategies.

Conclusion

In the ongoing evolution of the mortgage sector, the findings from ADCo's study serve as a crucial reminder that comprehensive risk assessment is invaluable for protecting consumers and investors alike. In a landscape where financial consequences can ripple through the economy, remaining aware of these changes is essential as the industry adapts to new standards. Stakeholders must therefore exercise caution and aim to maintain robust practices that focus on risk mitigation and fair market access for all borrowers, especially the disadvantaged.

For those interested in reviewing the full paper and its comprehensive insights, it is available through the ADCo website.

About Andrew Davidson & Co., Inc.

Andrew Davidson & Co., Inc. is a well-respected institution developing and licensing models for prepayment, credit, and risk measurement tools. Its contributions are widely utilized by financial institutions, including top mortgage banks and investment entities, providing valuable analytics aimed at enhancing financial and investment management processes.