Commonwealth Credit Union automates 83% of consumer loan decisions with Zest AI underwriting

In 2019, Commonwealth Credit Union wanted to lend deeper into the credit spectrum with more accurate, unbiased decisioning without increasing risk. The challenge intensified during COVID-19 when high turnover among experienced underwriting staff threatened their ability to maintain application volume and member relationships.

Commonwealth deployed Zest AI's automated underwriting technology across auto, credit card, and personal loan portfolios. Zest AI integrated with TruStage Digital Storefront and WithClutch to enable pre-screening and pre-approval, and the credit union also adopted Zest AI's LuLu generative AI lending intelligence companion for leadership-level insights.

Since 2021, Zest AI has helped Commonwealth approve more than $324 million in consumer loans — over 18,000 loans — with 70–83% of all consumer loan decisions fully automated. Depending on the portfolio, Commonwealth has seen a 30–40% lower delinquency rate compared to traditional scoring methods.

• Automating underwriting decisions at scale allows credit unions to expand lending into underserved segments without proportionally increasing risk.
• Integrating AI pre-screening with digital storefronts (TruStage, WithClutch) extends qualified loan volume without additional manual effort.
• GenAI lending intelligence tools (LuLu) complement automated decisioning by giving leadership real-time visibility into portfolio performance and risk.