Former HomeStreet Accounts: Visit the Transition Hub for important information. For first-time login instructions for online banking and mobile app links, click here. Mobile Banking Plus App Downloads: Apple iOS, Android

Fraud Alert Notice: We have received reports of customers being contacted by individuals (via phone, text, email) claiming there is fraudulent activity on their accounts (including checks, wires and ACH transactions). Learn more

Treasury Accounts & Services

Additional Account & Services Information
for Treasury Management Clients

Please visit our Business Banking General Account & Services Information page to review conversion details that impact all business deposit accounts. The items listed on this page are specific to those clients who also have Treasury Management Services.

Treasury Services
Transition Guidebook

Please feel free to download this guidebook as a complete reference guide to the
transition and share with your employees.
  
View guidebook

 

Related Topics

Please contact your business banker for complete pricing changes and additional information regarding Treasury Management products and services. Fees are subject to change without notice and pricing may vary.

If you currently receive paper analysis statements, these statements will only be available through Commercial Center beginning on March 23.

By 5:00pm (PT) Thursday, March 19, 2026: Final ACH batches must be released. ACH services via HomeStreet's system will end.

Prior to 5:00pm (PT) Friday, March 20, 2026: Download your ACH history and any templates you wish to retain. This history will not be available via Online Banking Plus nor Commercial Center.

Monday, March 23, 2026 (PT): Please be sure to notify the senders of Mechanics Bank's routing and transit number, which is 121102036, and log in to Commercial Center for ACH items with an effective date of 3/23/2026 or later. Note: the HomeStreet routing number will continue to work.

  • ACH Tax templates will not be converted and will need to be reestablished
  • Non-NACHA ACH file import templates will not be converted and will need to be reestablished

Your new Commercial Center password/PIN, established the first time you log into the system, will be required when you initiate an ACH transfer and at the approval step.

After March 23, 2026: The processing deadline for online ACH originations will be 5:00pm (PT).

You should experience minimal changes to your ACH services beyond the above.

At 3:00pm (PT) Friday, March 20, 2026: Wire transfer services via HomeStreet's system will end.

Prior to 5:00pm (PT) Friday, March 20, 2026: Download your wire history. This history will not be available via Online Banking Plus nor Commercial Center.

For incoming wire transfers dated after Friday, March 20, please be sure to notify the senders of the specific Mechanic's Bank routing and transit number, which is 121102036. Note: The former HomeStreet routing number will continue to work.

The SWIFT code will also need to be updated from HOMSUS6S over to MEBKUS66.

Your new Commercial Center password/PIN, established the first time you log into the system, will be required when you initiate a wire and at the approval step.

After March 23, 2026: The processing deadline for online wire originations will be 3:30pm (PT). The processing deadline for online FX wire originations will be 1:30pm (PT).

You should experience minimal changes to your wire services beyond the above.

Prior to 5:00pm (PT) Friday, March 20, 2026: Download your RDC history. This history will not be available via Online Banking Plus nor Commercial Center.

The system alerts from RDC will change. Online Banking Plus and Commercial Center users will be notified when a deposit is rejected. No alerts will be sent for accepted or adjusted deposits.

Continue to use your existing scanner: Your scanner driver will update automatically after the transition.

For Online Banking Plus users: Administrators will be able to maintain their own users; however, to add, delete, or change RDC user permissions, a request will have to be made with Mechanics Bank.

After March 23, 2026: The processing deadline for remote deposit capture will be 6:30pm (PT).

Your lockbox services will continue without interruption.

There will be a slight delay in the service used to run balance/transaction reports in Commercial Center after the transition. The data needed to run these reports will be available beginning Tuesday, March 24, 2026.

Any sweeps or automatic transfer established between accounts will transfer over. Please verify this on Monday, March 23, 2026 to ensure there are no interruptions.

Historical account information for your IntraFi account(s), Insured Cash Sweeps (ICS) and Certificate of Deposit Account Registry Services (CDARS) will be available through continued access to the HomeStreet-related Depositor Control Panel (DCP) located here: www.depositorcontrol.com/login.

For current and future account information, you should receive an email invitation by 3/27/2026 from Mechanics Bank to register for your new DCP account. This invitation will remain active for 24 hours, so please be sure to complete registration within that time frame. If you do not see the email in your inbox, please check your spam or junk folder. If the invitation has expired, please contact Treasury Operations support by calling 800.272.1876 to have it resent. If you have any questions, please reach out to your Mechanic’s Bank representative.

Your CDARS terms and rates will remain until maturity.

Friday, March 20, 2026 before 5:00pm (PT): Review the transaction presentments on your account. If there are items you would like paid or returned in the Positive Pay system on Saturday, March 21, notify the bank by contacting Commercial Depository Services (CDS) or calling your banker. If you don't contact us, we will follow the default pay/return rules established for your account over transition weekend.

Please note user access for Positive Pay is changing slightly. If a user has “maintenance” access to an account(s) AND “view-only” access to another account, the “view-only” account will not be added. In this scenario, the user will need to request “maintenance” access to the “view-only” account to see it in the Positive Pay system. The system only allows users to choose “maintenance” OR “view-only” access. A combination of both is not allowed. (A combination of both is allowed at the user level).  

After your initial log-in to Commercial Center, please check the Positive Pay permission settings as the entitlements have likely changed due to system access differences between Commercial Center and HomeStreet’s Business Online Banking service.

Access to Positive Pay via the mobile apps will no longer be available.

After March 23, 2026: The Positive Pay exception review deadline will be 12:00pm (PT).

Your Positive Pay services will largely remain the same within Commercial Center beyond what is listed above with your history, templates, and file definitions automatically transitioning.

HomeStreet customers using the ACH Block Service will be transitioned to ACH Positive Pay in Commercial Center. Transactions will post as an exception.

As close to 4:00pm (PT) Friday, March 20, 2026: Download any Quicken or other third-party financial software, including Direct Connect or Web Connect history you wish to retain. Learn more here

Both services will be available via Commercial Center, however, the bill pay feature will not be allowed.

HomeStreet business online banking accounts will use one of two online business banking platforms at Mechanics Bank beginning on March 23, 2026:

Some Treasury Management businesses will transition to Online Banking Plus, while others will transition to Commercial Center. It largely depends on what online banking services you employ in support of your business.

Business clients who originate online Automated Clearing House (ACH) transfers using the ACH Network, originate wire transfers online, use Positive Pay services and/or those with 20+ entities will be transitioned to the new Commercial Center Online and Mobile Banking platforms. Businesses with more than 20 entities under one online banking profile will also be transitioned to Commercial Center.

If your business is being transitioned to Commercial Center Online Banking, we will notify you in advance and provide detailed information and instructions in a series of separate communications.

We're here to help during this transition. Call us Monday - Friday 8:00am - 5:00pm (PT) at 800.272.1876 or via email treasury_operations@mechanicsbank.com.