Why Credit Score Isn’t the Full Story for Underwriters
6 December 2025

Imagine a borrower with a spotless history of paying rent and utilities on time but no traditional credit card or loan accounts. Conventional credit scoring systems might see this person as a risk, or worse, not score them at all. Yet, their financial behavior tells a different story-one of reliability and responsibility. This gap in understanding is why credit scores alone don’t capture the full picture for mortgage underwriters and lenders.


Recent shifts in mortgage underwriting policies and credit scoring methods highlight an important trend: alternative data is becoming a crucial factor in evaluating borrower risk. The Federal Housing Finance Agency’s approval of VantageScore 4.0 for loans sold to Fannie Mae and Freddie Mac is one example of how the industry is evolving beyond traditional credit scores [source]. At the same time, Fannie Mae’s removal of the minimum FICO® credit score requirement from its Desktop Underwriter system signals a willingness to rethink how creditworthiness is assessed [source].

The Limits of Traditional Credit Scores

Credit scores have long been the cornerstone of underwriting decisions. They provide a quick snapshot of a borrower’s credit history, payment patterns, and outstanding debts. However, these scores do not always tell the full story. Many individuals have limited or no traditional credit history, often referred to as "thin-file" borrowers. This group includes young adults, recent immigrants, and those who prefer to avoid credit cards or loans.


For these borrowers, credit scores may not accurately predict future creditworthiness. The Federal Deposit Insurance Corporation (FDIC) has pointed out that credit scores can fall short in capturing the financial behavior of certain populations, which calls for the inclusion of alternative data in underwriting models [source]. Without alternative data, lenders risk excluding reliable borrowers simply because they lack a traditional credit footprint.


Moreover, statistics show that less than 0.1% of mortgages purchased by Fannie Mae and Freddie Mac between 2016 and 2020 were made to borrowers without credit scores, highlighting how rare it has been to use alternative data in mortgage underwriting so far [source]. This low adoption rate suggests a significant opportunity for lenders to expand credit access by embracing broader data sources.


In addition to the challenges faced by thin-file borrowers, the reliance on traditional credit scores can perpetuate systemic inequalities. For instance, studies have shown that certain demographic groups, including minorities and low-income individuals, are disproportionately affected by the limitations of conventional credit scoring. This can lead to a cycle of exclusion, where those who need financial assistance the most are unable to secure loans or favorable interest rates, further entrenching their financial struggles.


Furthermore, the rise of fintech companies has begun to challenge the status quo by leveraging technology to analyze alternative data points, such as utility payments, rental history, and even social media behavior. These innovative approaches not only provide a more comprehensive view of a borrower's financial habits but also offer a pathway for lenders to reach underserved markets. As the financial landscape evolves, the integration of these alternative data sources could reshape the lending industry, making it more inclusive and equitable for all borrowers.

Alternative Data: What It Is and Why It Matters

Alternative data refers to financial information not typically included in traditional credit reports. This can include on-time rental payments, utility bills, mobile phone payments, and even social network analytics. These data points provide a more comprehensive view of a borrower’s financial habits and reliability.


The National Credit Union Administration (NCUA) emphasizes that alternative data can play a vital role in credit underwriting by filling gaps left by conventional credit files [source]. For example, consistent payment of rent and utilities demonstrates a borrower’s ability to manage recurring expenses responsibly. Including these factors can help lenders evaluate creditworthiness more fairly, especially for those with limited credit history.


Research supports this approach. Studies have shown that incorporating alternative data such as mobile phone usage and social network behavior can improve credit scoring models and promote financial inclusion [source]. This means more people can qualify for mortgages and other loans, reducing the number of creditworthy individuals left out due to traditional scoring limitations.


Furthermore, the rise of technology has made it easier for lenders to access and analyze alternative data. Advanced algorithms and machine learning techniques can process vast amounts of information quickly, allowing for more nuanced assessments of potential borrowers. This technological advancement not only enhances the accuracy of credit evaluations but also enables lenders to tailor their offerings to meet the specific needs of diverse consumer segments. As a result, individuals from various backgrounds, including those in underserved communities, can gain access to financial products that were previously out of reach.


Moreover, the use of alternative data is not just beneficial for borrowers; it also presents a significant opportunity for lenders. By leveraging these additional insights, financial institutions can mitigate risk and make more informed lending decisions. This can lead to lower default rates and improved profitability. As the financial landscape continues to evolve, the integration of alternative data into credit assessment processes is likely to become a standard practice, reshaping the way lenders view creditworthiness and expanding access to capital for millions.

How Mortgage Underwriting Is Changing

Mortgage underwriting has traditionally relied heavily on FICO® scores. However, recent policy changes are shifting this paradigm. Fannie Mae’s decision to remove the minimum FICO® score requirement from its Desktop Underwriter system, effective November 15, 2025, marks a significant step toward embracing alternative data and more flexible credit evaluation methods [source].


This change opens the door for borrowers who might have been excluded before due to low or absent credit scores. It also encourages lenders to consider a wider range of financial behaviors in their risk assessments. The Federal Housing Finance Agency’s approval of VantageScore 4.0 further supports this trend by allowing mortgage loans backed by this newer scoring model, which incorporates more recent data and alternative factors [source].


Despite these advancements, the use of alternative data in mortgage underwriting remains limited. The Government Accountability Office (GAO) notes that alternative data can increase mortgage access for individuals with limited credit histories, yet its adoption is still in early stages [source]. As lenders gain confidence in these new methods, broader acceptance is expected to follow.


Moreover, the integration of technology into the underwriting process is also reshaping how lenders assess risk. Automated underwriting systems (AUS) are becoming more sophisticated, leveraging machine learning algorithms to analyze vast amounts of data quickly and accurately. These systems can evaluate not just traditional credit metrics but also factors like payment history on utility bills, rental payments, and even educational background, providing a more holistic view of a borrower’s financial reliability. This evolution could lead to a more equitable lending landscape, where individuals who have historically faced barriers due to traditional credit scoring methods can finally gain access to home financing.


In addition to the technological advancements, there is also a growing emphasis on financial literacy and education for potential borrowers. Organizations and lenders are increasingly investing in programs that help consumers understand the mortgage process, the importance of credit scores, and how to improve their financial health. By empowering borrowers with knowledge, the industry aims to create a more informed clientele that can navigate the complexities of mortgage applications and ultimately increase homeownership rates across diverse demographics.

Innovations in Credit Assessment: Graph Data and Beyond

One emerging area in credit assessment involves using graph data to analyze relationships and behaviors that traditional credit scores miss. Graph data looks at connections between individuals, their financial activities, and social networks to build a more nuanced risk profile.


A recent study highlights how combining graph data can improve creditworthiness assessments for thin-file borrowers, offering a more accurate picture of risk than traditional scores alone [source]. This approach can identify patterns and signals that indicate a borrower’s likelihood to repay, even without extensive credit history.


These innovations align with the broader push toward financial inclusion. By leveraging diverse data sources and advanced analytics, lenders can make smarter decisions and extend credit to more qualified borrowers who might otherwise be overlooked.


Moreover, the integration of graph data into credit assessment can also enhance predictive modeling. By analyzing the interconnectedness of financial behaviors, lenders can uncover hidden insights that traditional models may fail to capture. For instance, understanding how a borrower interacts with their peers or how their financial habits are influenced by their social circle can provide a deeper understanding of their financial reliability. This not only aids in risk assessment but also helps in tailoring financial products that meet the specific needs of various consumer segments.


Additionally, the use of graph data can foster a more dynamic approach to credit scoring. Unlike static credit scores that may not reflect recent changes in a borrower’s financial situation, graph-based assessments can adapt in real-time, taking into account new information as it becomes available. This agility can be particularly beneficial in rapidly changing economic environments, allowing lenders to respond swiftly to shifts in borrower behavior and market conditions, ultimately leading to more responsible lending practices.

What This Means for Borrowers and Lenders

For borrowers, especially those with limited or no traditional credit history, the shift toward alternative data and new scoring models offers hope. It means more opportunities to qualify for mortgages and other loans based on a fuller understanding of their financial behavior. This is particularly significant for young adults, recent immigrants, and those who have relied on cash transactions, as they often find themselves excluded from conventional credit assessments. By utilizing data such as utility payments, rental history, and even social media activity, lenders can create a more comprehensive picture of a borrower's reliability and financial responsibility.


Lenders benefit by gaining access to a wider pool of potential customers and reducing risk through better-informed underwriting. Incorporating alternative data can lead to more accurate risk assessments and fewer defaults, ultimately supporting a healthier lending market. Additionally, as competition increases among lenders to adopt these innovative practices, it could drive down interest rates and improve loan terms for borrowers, making credit more accessible and affordable. This evolution in lending practices not only enhances financial inclusion but also stimulates economic growth by empowering individuals to invest in homes, education, and businesses.


As these changes take hold, it will be important for lenders to balance innovation with responsible lending practices. Transparency about how alternative data is used and ensuring borrower privacy will be key to building trust and maintaining regulatory compliance. Moreover, lenders must remain vigilant against potential biases that could arise from the use of alternative data, ensuring that these new models do not inadvertently disadvantage certain groups. Continuous monitoring and adjustment of these scoring systems will be essential to uphold fairness and equity in lending, ultimately fostering a more inclusive financial landscape.

Before You Go: Key Takeaways

  • Traditional credit scores do not capture the full financial picture, especially for thin-file borrowers.
  • Alternative data such as rental and utility payments can improve credit assessments and increase mortgage access.
  • Fannie Mae’s removal of minimum FICO® score requirements and FHFA’s approval of VantageScore 4.0 signal a shift in underwriting standards.
  • Innovations like graph data analysis offer new ways to evaluate creditworthiness beyond traditional scores.
  • Borrowers with limited credit history stand to benefit from these changes, while lenders can make smarter, more inclusive lending decisions.


Frequently Asked Questions


Q: What is alternative data in credit underwriting?


A: Alternative data includes financial information not typically found in credit reports, like on-time rent and utility payments.


Q: Why did Fannie Mae remove the minimum FICO® score requirement?


A: To allow more flexible underwriting and consider borrowers who may not have traditional credit scores but show creditworthiness through other data.


Q: How does VantageScore 4.0 differ from traditional credit scores?


A: VantageScore 4.0 incorporates more recent and diverse data points, improving accuracy and inclusivity in credit scoring.


Q: Can alternative data help people with no credit history get a mortgage?


A: Yes. Alternative data can provide evidence of financial responsibility, helping those without traditional credit histories qualify for loans.


Q: Are lenders widely using alternative data now?


A: Adoption is growing but still limited. Less than 0.1% of mortgages purchased by Fannie Mae and Freddie Mac recently used alternative data underwriting.


Q: Is using alternative data safe and fair?


A: When used responsibly, alternative data can enhance fairness by including more borrowers and improving risk assessments. Privacy and transparency are essential.


As the landscape of credit scoring evolves, it is crucial to understand the implications of these changes not just for borrowers, but also for the broader economy. The shift towards incorporating alternative data could lead to a more equitable lending environment, where individuals who have historically been marginalized by traditional credit scoring systems can finally gain access to financial products. This inclusivity can stimulate economic growth by enabling a larger segment of the population to invest in homes, start businesses, and contribute to their communities.


Moreover, the integration of advanced technologies in credit evaluation, such as machine learning and artificial intelligence, is paving the way for more nuanced assessments of creditworthiness. These technologies can analyze vast amounts of data, identifying patterns and trends that human underwriters may overlook. As lenders become more adept at utilizing these innovative approaches, we may witness a significant transformation in how credit is perceived and granted, fostering a more dynamic and responsive financial ecosystem.

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