Welcome American Bank of Beaver Dam Customers!
All former American Bank customers should have full access to Farmers & Merchants Union Bank systems. Find updates, FAQs, and Important Information here.
Sunday, July 12, 2026
As of 8 am, all former American Bank (AB) customers should have full access to Farmers & Merchants Union Bank (FMUB) systems.
Personal and Business Online Banking users will want to visit fmub.bank and log in using the banking login link on the homepage. For personal users, to sign in, please use your existing username and the last 6 digits of your Social Security number for your password. Business online users will use your existing username and the last 6 digits of their EIN number for their password.
Mobile Banking - AB personal and business online users can visit the Apple App or Google Play stores and search for 'FMUB Mobile' to download your new banking app.
Debit Cards - If you have not done so already, please activate your FMUB Visa debit card that was sent to you in June and start using that card today. Your AB debit card will no longer work as of July, 13 2026.
If you have any questions on these, or any services, you can call our dedicated call center at 920.623.4000 and speak to a Farmers & Merchants Union Bank team member, we're here to assist you.
RESOURCES:
Will my account numbers stay the same?
For most customers, yes. Unless we have already contacted you about a change, your account number will remain the same
Will location hours change?
For most locations, no. Branch hours will remain the same following the transition to FMUB.
The exception is our Beaver Dam Walmart Branch, which will permanently close on Friday, July 31, 2026. Customers are welcome to visit any of our other nearby FMUB locations for their banking needs.
What is Farmers & Merchants Union Bank’s routing number?
Farmers & Merchants Union Bank’s routing number is 075902670.
Will I be able to continue using my American Bank checks?
Yes. Your current American Bank checks will continue to be accepted for the foreseeable future, so there is no need to replace them at this time.
When it's time to reorder checks, your new checks should include the FMUB routing number. If you order checks through FMUB, we'll automatically ensure the correct routing number is used. If you order through another provider, please be sure to update the routing number when placing your next order.
I have direct deposits into my American Bank account. Do I need to inform my employer or Social Security of a change to my accounts?
In most cases, no. Your direct deposits should continue without interruption, and it should not be necessary to notify your employer, the Social Security Administration, or other payment providers.
However, with the transition complete, we recommend updating your direct deposit information to use your FMUB routing number when it is convenient to do so. This will help ensure your information reflects your current financial institution.
What about my automatic payments, do I need to do anything different for those?
In most cases, no. Your existing automatic payments should continue without interruption, and it should not be necessary to update your payment information.
However, now that the transition is complete, we recommend updating your payment information to use your FMUB routing number the next time you make changes to those payments or establish new automatic payments. This will help ensure your information reflects your current financial institution.
What will happen with my debit card?
You should have already received your new FMUB debit card in the mail. If you have not yet received your card or are experiencing difficulty activating it, please call (920) 623-4000 or visit any FMUB location. Our team will be happy to assist you.
How will I access my accounts through Online and Mobile Banking?
Once the conversion is complete, you will be able to access your accounts through Online Banking by visiting fmub.bank or through the FMUB Mobile Banking app (Personal) or FMUB Mobile Business Banking app (Business), available in the Apple App Store and Google Play.
Sign in using your existing username and the temporary password provided in your Welcome Guide. After your first login, you'll be prompted to create a new password and complete a brief security setup.
Please note that you must be enrolled in Online Banking to use the FMUB Mobile Banking apps. If you need assistance enrolling or signing in, please call (920) 623-4000 or visit any FMUB location.
Will I be able to view my transaction history in Online Banking?
Once the conversion is complete, you will be able to view your transaction history in FMUB Online Banking.
A final American Bank statement has been prepared covering account activity from the ending date of your most recent statement through the conversion. This statement will be mailed to all customers, including those enrolled in eStatements.
Prior American Bank statements and transaction history will become available in FMUB Online Banking within approximately 30 days following the conversion. Until then, you may not see all of your historical account information in the new system.
If you have questions or need assistance accessing your account history, please call (920) 623-4000 or visit any FMUB location.
What will happen to my Quicken, QuickBooks, or other third-party app connections?
Following the conversion to FMUB, you may need to reconnect Quicken®, QuickBooks®, or other third-party applications to your accounts.
If your application prompts you to update your connection, select Farmers & Merchants Union Bank (FMUB) as your financial institution and follow the application's instructions to reconnect your accounts.
If you experience difficulty reconnecting your accounts, please contact us at (920) 623-4000 or visit any FMUB location for assistance.
Who should I contact with additional questions?
Reach out to the same trusted staff you work with today — their phone numbers are not changing. You can also call FMUB at (920) 623-4000 if you need help.