Six Hidden Risks of AI Hallucinations in Mortgage Compliance – Retrieval Augmented Generation (RAG) as a Solution

AI has enormous potential in mortgage banking compliance, offering faster, more efficient ways to navigate the ever-growing maze of regulatory requirements. Yet there’s an undercurrent of risk that those of us in the industry can’t ignore: hallucinations. AI hallucinations—misleading or outright false outputs—pose a real threat to accuracy and compliance in mortgage banking. This is where new advancements, like Retrieval-Augmented Generation (RAG), are stepping in to reduce these risks by grounding AI responses in verified, real-time data.

1. Create Constancy of Purpose Toward Improvement

Establishing a culture focused on continuous improvement means prioritizing long-term optimization over short-term fixes. For instance, in escrow management, maintaining accuracy in account reconciliation and disbursements requires automated validation and auditing processes. By implementing a purpose-built automation solution, teams can reduce human error, ensure compliance with regulatory timelines, and ultimately improve customer satisfaction and operational efficiency.

2. Adopt the New Philosophy

In mortgage servicing, a proactive, tech-driven quality philosophy is crucial. In investor reporting, for example, traditional manual processes can lead to data inaccuracies and delays. Adopting real-time data validation techniques and automated workflows ensures accuracy and timeliness, improving transparency and reducing manual effort. This philosophy minimizes the risk of inaccuracies and builds stronger investor relationships through reliable data reporting.

3. Cease Dependence on Inspection Alone

Reliance on end-of-process inspections can introduce costly delays if errors are identified late. In foreclosure processes, integrated, in-process checks and validation are essential. This approach involves embedding compliance checks at each stage—such as validating property valuation or legal documentation early—reducing the risk of rework and associated costs. Automation platforms with configurable checkpoints can streamline this process, ensuring that regulatory requirements are consistently met without adding manual burden.

4. End the Practice of Awarding Business on Price Tag Alone

Vendor selection based solely on price can lead to compromised quality and security, especially for sensitive processes like document custody. Selecting vendors with proven data security, strong SLAs, and advanced integration capabilities ensures that sensitive borrower information is protected and managed efficiently. By prioritizing vendor quality, mortgage servicers reduce risks associated with data breaches, mismanagement, or delays in document handling.

5. Improve Constantly and Forever the System of Production and Service

Mortgage servicing requires continuous system improvements to remain compliant and efficient. In payment processing, automated communication and error-checking mechanisms help teams respond promptly to borrower inquiries and minimize the risk of missed or misallocated payments. By consistently refining processes, servicers can reduce borrower complaints and improve cash flow, all while staying aligned with regulatory standards.

6. Institute Training on the Job

Maintaining a high standard in quality requires ongoing training, particularly in complex areas like delinquency management. Regular, role-specific training in compliance, risk assessment, and customer interaction prepares teams to handle sensitive cases accurately and empathetically. Incorporating automated training modules and scenario-based learning in the servicing platform can keep team skills up-to-date with evolving regulations and industry standards, reducing both compliance risk and customer churn.

4. Interpretive Hallucinations

Interpretive hallucinations occur when a model makes assumptions or subjective conclusions without enough evidence. This can be especially dangerous in mortgage compliance, where decisions must be based on concrete regulatory data.

In one instance, while reviewing the Fair Lending requirements, the AI inferred that any policy impacting minority communities negatively could automatically be deemed discriminatory. While this might be a fair assumption, regulatory analysis requires concrete data and intent, not just outcome-based assumptions. If RAG were integrated, the model could retrieve recent enforcement cases or official fair lending guidelines to provide a more nuanced interpretation based on actual precedents, rather than making subjective leaps.

5. Quoting Hallucinations

Quoting hallucinations surprised me the first time I saw them. This happens when a model fabricates citations or references. In mortgage compliance, where the credibility of sources is paramount, this can be particularly damaging.

I recall the AI referencing a supposed CFPB “bulletin” on adjustable-rate mortgages (ARMs) that didn’t actually exist. If I hadn’t double-checked, I could have cited a non-existent document, undermining trust and risking regulatory backlash. With RAG, the model would only pull information from verified sources, reducing the chances of quoting hallucinations and ensuring that all references are genuine and credible. RAG could make a solution like Veritiq, which specializes in compliance, even more trustworthy by grounding its compliance recommendations in real documents.

6. Implied Knowledge Hallucinations

Implied knowledge hallucinations happen when the model implies it has up-to-date information, even when it doesn’t. In mortgage compliance, where regulations are frequently updated, this can be misleading and potentially risky.

This issue surfaced when the model confidently stated, “The CFPB recently updated rules on appraisal independence,” despite only having knowledge up to 2023. RAG would resolve this by enabling the model to access the latest updates directly from regulatory databases, such as the CFPB’s online resources. This ensures that users are provided with accurate and timely information, and it’s a capability that makes solutions like Veritiq even more dependable for compliance teams.

Veritiq and the Power of RAG in Mortgage Compliance

As compliance becomes more complex, Veritiq’s AI-enabled compliance management solution, enhanced by RAG technology, offers a much-needed safeguard. Veritiq pulls real-time regulatory data and provides grounded compliance recommendations, helping mortgage compliance teams stay on top of evolving regulations. By combining AI insights with reliable data, Veritiq reduces the risk of hallucinations and empowers compliance professionals with trustworthy, actionable insights, helping them navigate the complexities of today’s regulatory environment with confidence.

If you’re working with AI in compliance, I’d love to hear your thoughts on this. How do you see RAG changing the game, and what other challenges do you think it could address in the compliance world?

Harnessing Gradient Boosting Machines (GBM) of AI to Enhance Credit Scoring for Mortgage Lenders

As a mortgage technologist who has spent over 3 decades working with technology and data in the mortgage industry, I’m always looking for ways to improve processes and drive better outcomes for lenders. One of the most exciting developments I’ve seen lately is the application of Gradient Boosting Machines (GBM) in credit scoring. This AI-powered tool is changing how we assess borrower risk, and it’s something I believe every lender should be considering to stay competitive.

What Makes Gradient Boosting Machines So Powerful?

GBMs are a form of machine learning that builds multiple decision trees in sequence, with each new tree correcting the mistakes of the one before it. This allows the model to get progressively more accurate over time. For credit scoring, this means a GBM can handle the complexities of borrower behavior far better than traditional models.

The beauty of GBMs lies in their ability to incorporate alternative data into their predictions. Instead of just relying on a FICO score or basic debt-to-income ratio, GBMs can factor in things like rent payment history, utility bills, and even job stability. This results in a more complete picture of the borrower’s financial health, allowing lenders to make smarter decisions.

How AI-Driven Credit Scoring Impacts Lenders

For mortgage lenders, especially those who are originating non-traditional loans, balancing loan approvals with risk management is always a challenge. GBMs help by reducing false positives (approving risky borrowers) and false negatives (denying good borrowers), which directly improves both loan volumes and default rates. The precision of these models means fewer defaults and more approvals of creditworthy borrowers, which is key to profitability.

Additionally, GBMs scale well. As your portfolio grows, the model continues to learn and adapt to new data. This means the more you use it, the better and faster it becomes at making predictions—something traditional models just can’t do.

Steps to Developing a GBM-Based Credit Scoring Model for Mortgage Lenders

To develop a GBM-based credit scoring model, a mortgage lender would begin by gathering extensive data from both traditional and alternative sources. This could include borrower information such as credit scores, income levels, debt-to-income ratios, and loan history, as well as non-traditional data like rent payment records, utility bills, and employment stability. The lender would then split this data into a training dataset and a test dataset.

A machine learning team would train the GBM model on the training dataset, allowing the model to learn how different features (e.g., late payments, income trends) contribute to credit risk. During this process, the GBM would build multiple decision trees, each correcting the mistakes of the previous one to improve accuracy. Once trained, the model would be evaluated using the test dataset to ensure it can predict borrower risk accurately.

The final step involves integrating the GBM model into the lender’s existing loan origination systems, allowing it to make real-time credit scoring decisions. Continuous monitoring and updating of the model would be essential to keep it accurate as market conditions and borrower behavior evolve.

A Smarter Way to Optimize Credit Scoring

I’m a firm believer that technology should only be introduced in a process when the competitive advantage it provides is many multiples of benefit over traditional methods. GBM’s (built on the unique and proprietary loan data of the lender) can be used as an overlay over traditional scoring models to give the lender a unique competitive edge over other lenders who are all using off the shelf models based on publicly available data points.

While several companies can help you do AI development, Nexval stands out because of our deep industry knowledge and ability to deliver solutions tailored to your specific needs. Our expertise in mortgage outsourcing and real estate tech gives us a unique advantage in ensuring that you not only adopt this technology but also obtain immediate quantifiable benefits to your bottom line.

If you are tired of the AI hype cycle and are at a loss how to use this technology in real life use cases such as GBM based credit scoring, let’s have a conversation.