Bought Comerica. Now Fifth Third Converts 500,000 Customers by Labor Day

Fifth Third bought Comerica in February, folding in about $294 billion in assets and roughly 500,000 retail customers. Converting those customers to Fifth Third’s platforms by Labor Day weekend is the immediate task.

Pat Saad, head of consumer digital, likens the effort to a space mission. The conversion runs in three phases: extensive discovery mapping Comerica products to Fifth Third’s existing offerings, a series of full dress rehearsals, and an hour-by-hour plan for conversion weekend itself. Fifth Third can’t afford disruption: customers need to be able to perform daily financial tasks throughout the transition.

What does Fifth Third actually get from those 500,000 accounts? Customers arriving on a better platform than they left. Comerica customers will gain a more capable mobile app, an expanded ATM network, and more modern branch experiences, which reduces the churn risk that shadows every bank conversion.

The operational friction is predictable but costly. Account number conflicts across states represent one of the most time-consuming pieces of any conversion: a safe deposit box number in one state can duplicate a checking account number in another. It’s a lesson Fifth Third first absorbed during its 2019 MB Financial acquisition, where contact information accuracy proved critical.

Saad’s managing ongoing digital priorities in parallel: SmartShield security updates, a cashflow insights feature called “plan,” and mobile app interface changes. He benchmarks Fifth Third against Delta Air Lines and Starbucks, not just peer banks.

Labor Day weekend is the target. Fifth Third gets one first impression.

Diana Kowalski