Automating underwriting across stores and online

Case Study · 6 min read

Alex Hummel, Head of Risk, and Yuri Bürger, Head of AI

Cover image: Automating underwriting across stores and online
“Operating costs were now decoupled from portfolio size growth.”

The client

A major North American consumer finance company with a large store network, serving sub-prime and near-prime customers.

The lender held a large amount of predictive data. But its risk management, underwriting and customer management had been built around the stores, so most of the work was manual. Its operational controls were strong, with mature identity checks, and customer satisfaction was high thanks to a strong relationship culture.

Product range

  • Sub-prime: APR 42%–116%, terms up to 5 years, loans of $500–$5,000
  • Near-prime: APR 26%–38%, terms of 3–5 years, loans of $5,000–$15,000
  • Products: short-term loans, instalment loans, lines of credit, car finance, savings accounts, overdrafts and insurance

Regulation was changing and the market was under pressure. The lender wanted to:

  • automate underwriting across all stores and online (a robo-underwriter);
  • reduce losses and improve control;
  • improve the performance of the existing book;
  • lower operating costs, and stop them rising with the size of the portfolio;
  • grow online and mobile lending profitably, in more regions;
  • improve its product mix, targeted marketing and customer acquisition.

It wanted to automate quickly, and at the same time move its products from the stores to digital channels.

How the work was done

Zoral started with a short proof of value, then put the results into production in phases, with training and monitoring.

Zoral analysed the store and online portfolios. Standard models from the Zoral model library set a baseline for the lender’s results and estimated the uplift a robo-underwriter could deliver.

Offline loan performance

0%2%4%6%8%10%12%14%05 00010 00015 00020 00025 00030 00035 00040 000Share of loans with defaultNumber of loansJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJunNumber of loansDefault rate

Default models from the Zoral model library, using only the lender’s application data for new and returning store customers, were applied to the portfolio. They showed which segments were underperforming, and where the underwriting process was inefficient.

Model Library default model for new offline clients

0%10%20%30%40%50%Default rate0-5050-100100-150150-200200-250250-300300-350350-400400-450450-500500-550550-600600-650650-700700-750750-800800-850850-900900-950950-1000
Default rate

Model Library default model for returning offline clients

0%5%10%15%20%25%30%Default rate0-5050-100100-150150-200200-250250-300300-350350-400400-450450-500500-550550-600600-650650-700700-750750-800800-850850-900900-950950-1000
Default rate

Note: each segment represents 5% of the portfolio.

At first the store portfolio was much larger than the online one. An online default model was then applied to the online portfolio, and it also exposed underperforming segments.

Model Library default model for online clients

0%10%20%30%40%50%Overdue and default rate0-100100-200200-300300-400400-500500-600600-700700-800800-900900-1000
Default rate

Next, credit bureau and bank statement data were added to the application data. This let the models work more fully, and their predictive power rose significantly.

Model Library default models with additional data, offline clients

0%5%10%15%20%25%30%35%40%45%50%Default rate0-100100-200200-300300-400400-500500-600600-700700-800800-900900-1000
Without additional dataWith additional data

Model Library default models with additional data, online clients

0%10%20%30%40%50%60%Default rate0-100100-200200-300300-400400-500500-600600-700700-800800-900900-1000
Without additional dataWith additional data

The models also found more fraud in both portfolios. Fraud models from the Zoral model library were put into use, and fraud fell. This cut fraud losses, and gave the lender a reliable digital platform for high-volume growth.

Model Library fraud scorecard for online clients

0%5%10%15%20%25%30%35%Fraud rate0-100100-200200-300300-400400-500500-600600-700700-800800-900900-1000
Fraud rate

Model Library fraud scorecard for offline clients

0%5%10%15%20%25%30%Fraud rate0-100100-200200-300300-400400-500500-600600-700700-800800-900900-1000
Fraud rate

The fraud models also uncovered fraud by staff at some stores. To address it, automated underwriting moved loan approvals from store staff to the lender’s credit policy, applied by the decision engine.

Selected store locations with the highest fraud rate

0%2%4%6%8%10%12%Fraud rate12345678910111213141516171819202122Store number
Fraud rateFraud rate, after 5% of loans with highest fraud rate are rejectedAverage fraud rate for population

Affordability checks and models were added through Zoral Decision Engine, online and in the stores. They improved underwriting decisions, reduced fraud and helped the lender meet its regulatory requirements.

Affordability Estimation

Consumer’s net income

+ $6,321

  • Consumer’s debt obligations− $273
  • Consumer’s housing costs− $1,531
  • Consumer’s basic living expenses− $732

Amount of spare cash to repay new loan = $6,321 − $273 − $1,531 − $732 = $3,785

Limit models were also put into use for every product, online and in stores. They calculated the largest affordable monthly amount for each loan.

The robo-underwriter

Default and fraud models fed the robo-underwriter. It ranked and grouped customers by expected profit. The lender also wanted to keep acceptance as high as possible. So the robo-underwriter combined default, fraud, affordability and limit models for each product line. The uplift was significant.

Revenue and average write-off after robo-underwriter optimisation

0100200300400500600700800050100150200250Average revenue, $Average write-off amount<20k20k–28k28k–36k36k–42k42k+Income bracket
Current revenueRobo-underwriter revenueCurrent average loss amountAverage loss amount with robo-underwriter
Income bracket<20k20k–28k28k–36k36k–42k42k+
Current revenue180258339415653
Robo-underwriter revenue242333406494753
Current average loss amount6085120122207
Average loss amount with robo-underwriter40628489158

Into production, in three phases

Zoral fOS components

ZDE

Zoral Decision Engine

Model execution and real-time decisioning

ZPS

Zoral Portal Studio

Digital product personalization: mass personalization of financial, digital products

ZBM

Zoral Behavior Matrix

Customer behavior and click-stream data: real-time behavioral data and features

Model Library

Zoral Intelligence Layer

Tuned decision models

ZDF

Zoral Data Fabric

Feature engineering, creation of production-strength analytical models

Your loan management system

Connected to Zoral fOS

Adapts to multiple financial products, intelligent workflows and back-end business processes

Dashboards

ZDF · BI and feature engineering
ZBM · behavior data capture configuration
Loan management
ZDE · decision workflows, next best action, KPI optimization
Customer behavior and click-stream data flow through ZBM into ZDE and ZDF; Model Library models drive real-time decisioning.

Phase I: improve the stores

  • Zoral fOS was first connected to the lender’s existing loan management system, to avoid disrupting the business.
  • More third-party data sources were added, so the full models could be used.
  • The robo-underwriter went live across the lender’s regions and stores.

Phase II: grow online

  • The online journey and workflows were built in Zoral Portal Studio to fit the lender’s brand, checks, data capture and processes.
  • Lead evaluation was added, to grow online customer acquisition at a sensible cost.
  • The online robo-underwriter went live across the lender’s regions.
  • Zoral fOS was kept in step with the loan management system, so stores and online worked together.
  • Zoral Behavior Matrix was added to the online journey.

Phase III: tune and improve

  • Conversion models were tuned and used in digital marketing workflows, across all channels.
  • Retention models were used to target and keep profitable existing customers.
  • Behavioural signals helped reduce abandoned online applications.
  • Variations of the customer journey were tested and tuned, which further improved acceptance rates, profit and customer satisfaction.
Three phases from offline optimization to online scale.

During Phase III, online revenue for some products began to exceed store revenue. The lender could then move faster on other parts of the business, such as new products. Operating costs no longer rose with the size of the portfolio, so the lender grew its market share while containing costs and growing profit. It continues to add models and automation.

Results

  • Profit up 28%
  • Portfolio write-offs down 19%
  • Quarterly volume growth up 12%
  • Online straight-through processing up from 50% to 87% (the 74% increase in the results box)
  • Customer acquisition costs down 32%
  • Customer retention rate up 9%
  • Online conversion rate up 31%

New clients - dynamic of default rate

10%12%14%16%18%20%22%24%05001 0001 5002 0002 5003 0003 5004 0004 5005 000Default rate# loansJunJulAugSepOctNovDecFebMarMonth

Returning clients - dynamic of default rate

5%5.5%6%6.5%7%7.5%8%8.5%9%05 00010 00015 00020 00025 00030 00035 00040 00045 00050 000Default rate# loansJunJulAugSepOctNovDecFebMarMonth

Customer application journey - conversion rate dynamics

0%5%10%15%20%25%30%35%40%45%50%Share of abandoned visitorsPhase IPhase IIPhase III
Start PagePersonal DetailsFinancial InformationBank Details

At launch, with behaviour capture

Conversion rate +15%Using behavioural signals and conversion models

Conversion rate +14%With email marketing automation, remarketing, live chat and a chatbot

Contact Us

Prefer to pick a time? Schedule a meeting

Automate lending, banking and finance operations.

London

Epworth House25 City RoadLondonEC1Y 1AAUnited Kingdom
+44 20 3963 2002

Miami

1221 Brickell Building, Suite 900Miami, FL 33131USA
+1 (305) 347-5133