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: 8:00 a.m. - 8:00 p.m. ET
Saturday: 9:00 a.m. - 1:00 p.m. ET 

Or call InfoSource automated 24/7 telephone banking anytime
(574) 235-2557
(800) 235-2557 
Lost or stolen ATM or debit card after hours?
You can report a lost or stolen Resource ATM or Resource Plus debit card during
non-business hours by calling:
In the United States: (800) 472-3272
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
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

Prefer to e-mail us?
Use the convenient e-mail inquiry form below. 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.

Need to report a complaint or suspected misuse of your accounts?

Please call us toll free at (800) 513-2360

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1st Source Bank Mortgage Express