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No credit score? A grocery list could be the next best thing

  • Written by Joonhyuk Yang, Assistant Professor of Marketing, Mendoza College of Business, University of Notre Dame

How you shop and what you buy at the grocery store can predict whether you pay your credit card bills on time, our new research shows[1].

As marketing[2] professors[3], we wanted to learn about alternatives to traditional credit scores. So we teamed up with a multinational conglomerate that, among other things, runs a large supermarket chain and a credit card issuer.

By analyzing consumer-level data from those two business units, we were able to see how 30,089 individuals shop and manage their finances.

We found that people with more consistent grocery shopping habits are more likely to pay their credit card bills on time. These are people who tend to shop on the same day of the week, spend about the same amount each month, buy similar items across trips and take advantage of deals regularly.

We also found that what people buy predicts how they manage their finances. For example, shoppers who frequently purchase cigarettes or energy drinks are more likely to miss credit card payments. Those who often buy fresh milk or salad dressing tend to be more diligent about paying their bills.

In general, buying healthier but less convenient food predicted responsible payment behaviors. This was true even when we held consumer characteristics such as income, occupation, credit score and family size constant.

Building on those findings, we developed a credit scoring algorithm that scores people based on their grocery shopping habits along with traditional credit risk indicators. When we simulated approval decisions with this algorithm, we found that using grocery data could help lenders predict defaults more accurately while boosting their per-customer profits.

Why it matters

According to the World Bank, more than 1 billion people[4] worldwide lack access to formal financial systems and, as a result, have no credit scores. In the U.S. alone, about 45 million adults[5] have no credit history or not enough of one to generate a score.

This makes it hard for them to access credit, even if they are responsible borrowers. And without credit, it’s harder to get a car, a job or even a place to live. It’s a problem that disproportionately affects underprivileged groups[6], including people of color and women.

In response, policymakers and researchers are increasingly interested in using alternative data sources to assess creditworthiness. For instance, Fannie Mae now considers[7] mortgage applicants’ rent payment histories, allowing those without traditional credit histories to demonstrate their creditworthiness.

Grocery data is especially promising because there’s so much of it. Pretty much everybody buys groceries, and not just once. Information about consumer preferences is continuously being generated in every aisle of grocery stores around the globe.

Our study shows that this data has value far beyond the grocery industry.

What’s next

We believe that our study serves as a proof of concept, offering insights for the design and implementation of future research. However, several key questions remain. For example, what if this approach affects different groups unequally? And what about privacy concerns?

Our follow-up research aims to address these issues. We’re collaborating with a conglomerate in Peru, a cash-reliant country with a significant unbanked population. Building upon our current findings, we’re working closely with that company to test the impact of our approach on low-income populations. We’ll be helping to evaluate credit applicants using retail transaction data, aiming not just to improve profitability but also to boost social inclusion in the region.

The Research Brief[8] is a short take on interesting academic work.

References

  1. ^ our new research shows (doi.org)
  2. ^ marketing (mendoza.nd.edu)
  3. ^ professors (business.rice.edu)
  4. ^ more than 1 billion people (www.worldbank.org)
  5. ^ about 45 million adults (www.consumerfinance.gov)
  6. ^ underprivileged groups (www.worldbank.org)
  7. ^ Fannie Mae now considers (www.cnbc.com)
  8. ^ Research Brief (theconversation.com)

Read more https://theconversation.com/no-credit-score-a-grocery-list-could-be-the-next-best-thing-234887

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