First Midwest Bancorp Routing Number: Transition Guide

What is the First Midwest Bancorp routing number?

First Midwest Bancorp historically used routing number 071025661 for ACH and electronic transfers. In 2022, First Midwest Bancorp merged with Old National Bancorp, creating a combined institution with over $45 billion in assets. Former First Midwest customers may have been assigned new routing numbers during the transition.

First Midwest Bancorp was a major community banking organization headquartered in Chicago, Illinois, serving customers across Illinois, Indiana, Iowa, and Wisconsin. The merger with Old National aimed to strengthen community banking presence throughout the Midwest region.

How to find your routing number after the merger

If you were a First Midwest Bancorp customer, your routing number may have changed during the Old National Bank conversion. Log into Old National Bank's online banking portal to verify your current routing and account numbers, as these were updated during the account migration process.

Old National Bank sent notifications to all former First Midwest customers with updated account details. If you are unsure of your current routing number, visit any Old National Bank branch or call customer service for assistance.

First Midwest direct deposit and ACH transfers

Former First Midwest Bancorp customers should update any direct deposit or ACH instructions with their new Old National Bank routing number. Contact your employer, government benefits provider, or any recurring payment services to ensure your deposits are directed to the correct account.

Old National Bank supports full ACH capabilities including direct deposit, bill pay, and account-to-account transfers. Online and mobile banking provide self-service tools for managing all electronic payment setups.

Wire transfers for former First Midwest customers

Wire transfers for former First Midwest Bancorp accounts are now processed through Old National Bank. Domestic wires use Old National's routing number and can be initiated through branch visits or by contacting the wire transfer department directly.

Old National Bank offers both domestic and international wire transfer services. Fees and processing times are set by Old National Bank, so review their current fee schedule for details on wire transfer costs.

Business banking with Slash

Bank mergers and transitions can disrupt business operations, requiring routing number updates and potential service gaps. Slash provides stable, modern business banking with dedicated routing numbers, instant ACH and wire transfers, unlimited virtual cards, and automated expense management — without the uncertainty of legacy bank consolidation.

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