Contact Us

1st Source Customer Service Center
  • (574) 235-2000
  • (800) 513-2360 (Toll Free)
Our Customer Service Center hours are longer to make your banking more convenient:
  • Monday - Friday: 8:30am - 6:00pm ET
  • Saturday: 9:00am - 1:00pm ET 
Or call InfoSource automated 24/7 telephone banking anytime
  • (574) 235-2557
  • (800) 235-2557 

Treasury Services

For assistance with BBO Treasury Online please call 1-800-399-5592 or 574-235-2003.

Lost or stolen cards

Lost or stolen ATM or debit card after hours?
You can report a lost or stolen Resource® ATM card or Resource Plus® debit card during non-business hours by calling:
  • In the United States: (833) 414-0544
  • International callers should call collect: (973) 682-2652 
Lost or stolen credit card?
You can report a lost or stolen 1st Source Visa Credit Card to:
  • Personal credit cards: (800) 558-3424
  • Business credit cards: (866) 552-8855 

Questions about your 1st Source loan or mortgage?

We want to know if you find an error on your statement, or need additional information about your loan or mortgage.
For Loan Inquiries
(800) 513-2360
1st Source Bank
Attn: Consumer Loan Department
P.O. Box 4055
South Bend, IN 46634-4055
For Mortgage Inquiries
(800) 621-8329
1st Source Bank
Attn: Mortgage Loan Department
100 N. Michigan Street, Suite 800
South Bend, IN 46601 

Please make sure to provide:
  • Your name and loan/mortgage number
  • For billing errors:
    • The dollar amount of the suspected error
    • A description of what you believe is wrong and why you believe it is a mistake
  • If you are requesting additional information about your loan/mortgage:
    • Please make your request as detailed and specific as you can so that we can provide the best response to your inquiry

Additional Resources

Address change
To report your new address or phone number:
  • Visit any 1st Source banking center, or
  • Fax your request, with your signature to 1st Source Customer Service: (574) 235-2580.
Routing Number
1st Source Bank's routing number is 071212128
Report a complaint or suspected misuse of your accounts
Please call us toll free at (800) 513-2360 

Prefer to e-mail us?
Use this convenient e-mail inquiry form. Please provide all the applicable information. Enter "0" or "none" if the space does not apply. We will respond to you via e-mail within one business day.
Make sure you are receiving important emails
Add us to your contacts. Directions are here.
Do not call list
To be added to the 1st Source Do Not Call List please email with your name and phone number or call Customer Service at (574) 235-2000.