Why I Love Share of Wallet
Thursday, July 10th, 2008OK, love is a strong word here. But gaining insight into share of wallet, especially when it can be cross-tabbed with other data, is one of my favorite ways to learn how customers are engaging with your company.
I looked at a simple data set from Marketing Charts in a post elsewhere which rekindled my love for the metric. I used this extensively as a direct marketer in a past life, because it told us so much about where there was opportunity for additional revenue. Plus I tracked it over time, which made it a great leading indicator of softening or strengthening demand.
Lets take a simple example.
Lets say your customers report they spend $200/year at your store, and $1000/year total in your category. 6 months later, they report $250/year at your store, and $750/year total in your category. You have 2 things to figure out - is my share of wallet increase from 20% to 33% real, and is the 25% decline in category spending real. But you have good information from which to continue to explore. In this case, if they are real, then you can get excited about the successful increase in market share, and be terrified by the decline in market size.
Another example is similar to how I looked at the Marketing Charts example - what if top 10% customers spend $1000/year with you and $1500 total, while next 10% customers spend $400/year with you and $1200 total? The opportunity in the next 10% is actually greater than the top 10%, although the downside risk of not retaining top 10% is higher. Knowing the difference, however, lets you craft strategies that best accomplish your objective(s) in each segment.