Comerica Bank Routing Number: A Detroit Number in a Dallas Bank

From Motor City to Big D: the bank that relocated

Comerica was founded in Detroit in 1849 as the Detroit Savings Fund Institute. For over 150 years it was synonymous with Michigan banking - its name is still stamped on the Detroit Tigers' home stadium. Then in 2007, Comerica did something unusual: it moved its corporate headquarters to Dallas, Texas, citing the need to be closer to its growing customer base in the Sun Belt. The decision was controversial enough to prompt a Michigan state senator to introduce a bill banning the use of taxpayer-funded stadiums by companies that leave the state.

Despite the headquarters move, Comerica kept the bulk of its operations, employees, and banking infrastructure in Michigan. The routing number 072000096, with its 072 prefix assigned by the Federal Reserve Bank of Chicago's Detroit branch, remains the primary routing number for the bank, a numerical artifact of where the institution actually grew up.

Why the routing number still says Detroit

Routing numbers are assigned by the American Bankers Association based on where a bank's charter is registered and which Federal Reserve district processes its transactions. Even though Comerica's CEO sits in Dallas, the bank's primary charter and the majority of its deposit accounts remain rooted in Michigan. The 072 prefix corresponds to the Federal Reserve Bank of Chicago's Detroit processing center, and changing it would require re-registering every existing ACH relationship and direct deposit, a logistical nightmare for a bank with millions of accounts.

Comerica does maintain a separate Texas routing number - 111000753 - for accounts opened in that state, plus 121137027 for California accounts. But 072000096 is the one most customers encounter and the one tied to the bank's historical identity.

Auto industry payroll and Comerica

Comerica's growth was inseparable from Detroit's auto industry. For decades it served as a primary lender and payroll processor for auto parts suppliers, dealership networks, and the web of manufacturing companies that orbit the Big Three. At its peak, Comerica processed payroll for thousands of Michigan-based manufacturers, making routing number 072000096 one of the most frequently used in the state's industrial economy.

This commercial DNA still defines Comerica. Unlike consumer-focused banks, roughly 70% of Comerica's revenue comes from business banking - commercial lending, treasury management, and trade finance. The bank has leaned into specialization in sectors like technology and life sciences, particularly through its offices in Silicon Valley and North Carolina's Research Triangle.

Setting up payments and transfers with Comerica

For ACH transfers and direct deposit, use 072000096 if your account was opened in Michigan, 111000753 for Texas, or 121137027 for California. Comerica's domestic wire transfer routing number is 072000096 regardless of state, and its SWIFT code for international incoming wires is MNBDUS33.

Comerica charges $25 for outgoing domestic wires and $45 for international wires on standard business accounts. The bank's treasury management platform, Comerica Connect, supports batch ACH origination and same-day ACH for business customers.

Business banking that doesn

Comerica's story illustrates a tension in American banking: a company can move its headquarters a thousand miles, but its banking infrastructure stays rooted in place. For businesses that operate across state lines, this creates confusion about which routing number to use and which branch network to rely on. Slash eliminates that friction entirely: one account, one set of payment details, accessible from anywhere with built-in spend management and accounting integrations.

Where Comerica straddles two states and three routing numbers, Slash gives growing businesses a single, modern platform that works the same whether your team is in Detroit, Dallas, or anywhere else.