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How to Run an AI Underwriting Pilot: A Practical Guide for Banks and Lenders

Abstract illustration of a controlled AI underwriting pilot: a defined sample of applications passing through a glowing checkpoint before expansion

Adopting AI underwriting does not need to begin with a full transformation of the lending operation.

A focused pilot allows a bank or lender to test the technology using a defined product, customer segment, or application channel.

The institution can compare AI-supported recommendations with the current process, measure operational results, assess decision quality, and identify implementation requirements before expanding.

01
Define
Name one or two measurable problems and pick a product that is meaningful but controlled.
02
Baseline
Record current decision time, review workload, exception rates, and portfolio outcomes.
03
Test
Run the AI workflow in shadow or decision-support mode on a representative sample.
04
Expand
Add volume, products, or limited automation only after the institution has its own evidence.
A useful pilot moves from a defined problem and baseline, through a controlled test, to expansion based on measured results.

Step 1: Define the business problem

An AI pilot should begin with a clear operational or credit challenge.

Examples include:

  • Loan decisions take too long
  • Credit analysts spend too much time reading documents
  • Application volume is growing faster than the team
  • Decision consistency varies between reviewers
  • Missing documents create repeated delays
  • Fraud checks are too manual
  • Partner applications need faster responses
  • Management has limited visibility into decision reasons

The pilot should focus on one or two measurable problems.

"Testing AI" is not a sufficient objective.

"Reducing average manual review time for personal loan applications" is much clearer.

Step 2: Select the right lending product

The first product should be meaningful enough to demonstrate value but controlled enough to manage risk.

Good pilot candidates often have:

  • A defined application process
  • Repeated document types
  • Clear eligibility criteria
  • Sufficient historical applications
  • Measurable lending outcomes
  • A manageable number of policy exceptions
  • Support from the product and credit teams

Possible pilot products include:

  • Personal loans
  • Payroll-linked loans
  • Small business working-capital loans
  • Equipment finance
  • Merchant finance
  • Leasing
  • Hire purchase
  • Microfinance products

Starting with the institution's most complex lending product may make the pilot unnecessarily difficult.

Step 3: Establish the baseline

Before testing the new process, the lender needs to understand current performance.

The baseline may include:

  • Average time from application to decision
  • Manual review time per application
  • Applications processed per analyst
  • Percentage of incomplete applications
  • Number of follow-up requests
  • Approval rate
  • Decline rate
  • Policy exception rate
  • Fraud or inconsistency rate
  • Cost per application
  • Early repayment performance

Without a baseline, the institution cannot determine whether the pilot improved the process.

Step 4: Define the AI workflow

The lender should decide which stages the platform will support.

A complete workflow may include:

  • Application and document intake
  • Data extraction and structuring
  • Identity and income verification
  • Bank statement analysis
  • Credit history review
  • Fraud and inconsistency checks
  • Risk scoring
  • Explainable recommendation
  • Human review
  • Final decision and audit record

Lendavium is designed to cover the process from application intake and verification through risk recommendation and final institutional review.

The pilot does not need to automate every stage immediately. It should test the stages most closely connected to the original business problem.

Step 5: Decide how humans will participate

The institution should define the human review model before the pilot begins.

Options include:

Shadow mode

The AI generates a recommendation, but the existing underwriting process remains responsible for the final decision.

The recommendations are compared afterward.

Decision-support mode

Analysts receive the AI recommendation and supporting signals before making the final decision.

Limited automation mode

Selected low-risk applications may move automatically, while other applications require human approval.

Shadow modeAI recommends. The existing process still decides. Results are compared afterward.
Decision-supportAnalysts see the recommendation and supporting signals before they make the final call.
Limited automationSelected low-risk files may move automatically. Other applications still need human approval.
Shadow mode is often the safest first step because it evaluates recommendations without changing decision authority.

Shadow mode is often a useful starting point because it allows the institution to evaluate recommendations without immediately changing decision authority.

Step 6: Select the pilot data

The pilot may use:

  • Historical applications
  • Current live applications
  • A combination of historical and live cases
  • Approved and declined applications
  • Performing and non-performing loans
  • Human-overridden applications

Historical testing can show how the system would have evaluated previous cases.

Live testing shows how the platform operates within the real application workflow.

The dataset should represent the actual customers and risk profiles the institution expects the system to assess.

Step 7: Define success metrics

Pilot metrics should cover three categories.

Operational performance

  • Decision time
  • Manual review time
  • Applications processed
  • Document extraction accuracy
  • Number of follow-up requests
  • Analyst productivity

Decision performance

  • Agreement with existing decisions
  • Approval and decline distribution
  • Number of escalated cases
  • Reason for recommendation differences
  • Performance by customer segment

Portfolio and risk performance

  • First-payment performance
  • Delinquency
  • Default rate
  • Early repayment
  • Performance of AI recommendations
  • Performance of human overrides

Lendavium publishes results from its use on an operational loan portfolio, including repayment and default comparisons between AI-approved loans and cases where people overrode the recommendation. Those results demonstrate the importance of connecting underwriting recommendations with actual repayment outcomes.

Any institution conducting a pilot should evaluate results using its own portfolio, policies, and risk definitions.

Step 8: Review disagreements carefully

The most valuable pilot cases are often those where the AI and human analyst disagree.

Each disagreement should be reviewed to understand:

  • Did the AI identify information the analyst missed?
  • Did the analyst have relevant context unavailable to the model?
  • Was the institution's credit policy correctly configured?
  • Was the input data complete?
  • Was the human decision based on a documented exception?
  • How did the loan perform afterward?

The objective is not to prove that either the AI or the analyst is always correct.

The objective is to understand how the combined process can improve.

Step 9: Gather feedback from users

Credit analysts and operations employees should be involved throughout the pilot.

Their feedback can reveal whether:

  • The recommendation is easy to understand
  • Important information is clearly highlighted
  • The system creates additional steps
  • Alerts are useful or excessive
  • Analysts trust the data presented
  • The workflow matches existing responsibilities
  • Further training is required

A technically accurate platform can still fail if it does not fit the daily work of the credit team.

Step 10: Decide how to expand

After the pilot, the institution can choose to:

  • Expand to more applications within the same product
  • Add additional lending products
  • Connect more data sources
  • Introduce automated applicant follow-up
  • Automate selected low-risk approvals
  • Add further specialist analysis
  • Integrate the platform with existing systems
  • Continue testing before deployment

Expansion should be based on measured results rather than the initial enthusiasm surrounding the technology.

A pilot creates evidence, not assumptions

AI underwriting should not be adopted based only on general claims about speed or efficiency.

A structured pilot gives the institution its own evidence.

It shows how the technology works with the lender's customers, documents, policies, analysts, and risk appetite.

That makes the pilot one of the most important steps in responsible AI adoption.

Explore related Lendavium capabilities

See how this fits the broader product: How It Works, Proven in Production, For Banks and Credit Unions, and Request a Demo.

FAQ

How long should an AI underwriting pilot last?
The appropriate period depends on application volume and the ability to observe relevant outcomes. The pilot should be long enough to produce a meaningful sample and evaluate both operations and decision quality.
Should a pilot use historical or live applications?
Both can be valuable. Historical applications support back-testing, while live applications demonstrate how the platform performs in the actual workflow.
What is shadow mode?
In shadow mode, the AI produces recommendations without controlling the final lending decision. Its results are later compared with the existing process.
What is the most important pilot metric?
There is no single metric. Institutions should evaluate processing time, analyst workload, recommendation quality, decision consistency, and eventual portfolio performance.

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