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Security. Community. History.

Discover Your Banking Advantage.

Attention existing Ottawa Online Banking customers with Twin Oaks accounts: Due to privacy concerns, you will not see your Twin Oaks accounts under your current login credentials until you confirm with one of our offices which Twin Oaks account(s) should be added to your existing profile. We sincerely apologize for any inconvenience and appreciate your understanding.



Important Announcement!

Due to recent fraud activity on OSB debit cards,  some customers may notice that their debit card may not work.

If you find that the card is not working, try to complete the transactions as PIN based transactions rather than the swipe or signature based transaction.


If you are experiencing trouble or have concerns, please contact the Fraud Prevention Services phone number at 1-866-842-5208.


At Ottawa Savings Bank we promise to provide you with service second to none. We have a rich history and a fresh approach to security so you can bank with confidence. We are your friends, your partner, your service provider -
We are your neighborhood bank.

Featured Services


Gen Gold®

Save money on products and services you use everyday like groceries, prescriptions, dining, entertainment and much more!

Mobile Banking

With Mobile Banking you can check account balances, transfer money, and pay your bills right from the palm of your hand!

Mortgage Application

Ottawa Savings Bank makes it easy to apply for your mortgage online so you can quickly get the money you need!


Sign up for Online Banking and get easy, free, secure paperless statements delivered directly to your email inbox.

Welcome to OSB

To All of the wonderful customers of Ottawa Savings Bank and Twin Oaks Savings Bank.

We would like to thank you for your patience during our recent conversion!  We truly appreciate all of our customers.