Business Banking

Beginning on Friday, March 20, 2026, your business accounts and related services are changing.

The following pages outline changes you can expect, as well as provide helpful tips to make this a smooth transition. Please familiarize yourself with this information and bookmark this section for future reference. Please check back frequently as new information may be added.

Business Online and Mobile Banking Changes

Mechanics Bank uses multiple business online and mobile banking platforms. Your business has been mapped to one of the two platforms listed below, based on your recent service level needs. This information is being sent to your main account contact. 

You will login to your new platform on Monday, March 23 from the login box at MechanicsBank.com (for your own safety, please don’t login from any other source).

For more information, tips and resources on your new online banking platform, please select from below. 

Online Banking Plus

For smaller organizations and the majority 
of business clients, and those who do NOT
originate wires online, use ACH services, or 
Positive Pay services.

Learn more

Commercial Center Online

For larger organizations and clients with 
more complex needs, including online wire 
origination, ACH services and Positive Pay 
services and those with 20+ entities.

Learn more

Information About Your New Accounts and Services


Business Banking
Account and Services
Information

General business account information about what is new
and different starting March 23, 2026. 

Learn more


Treasury Management
Account and Services
Information

Specific transition information for
Treasury Management clients.

Learn more


Business Banking
Transition Checklist

This checklist includes actions you need to take between now and 
Monday, March 23 to ensure a smooth transition. 

Learn more


Business Banking
Transition Guidebook

This is a digital version of the guidebook we mailed to you. Feel free
to download a copy for yourself, and share with your employees.

Learn more

FAQs

Business Deposit Accounts

Your new account may have different features, benefits, options, or product name. Please consult the Business Account Transition Guide “Change in Terms” schedules to identify any changes to your account. 

Unless you are notified, your account number(s) will remain the same.  

The current HomeStreet routing number will continue to work. Please update any transaction material to the Mechanics Bank routing number (121102036) at your first opportunity after Monday, March 23, 2026.    

You may continue to use your existing HomeStreet or Mechanics Bank checks and deposit slips without interruption. However, when you order new checks or deposit slips after Monday, March 23, 2026 please use the updated Routing Number 121102036.  

Direct deposits and pre-scheduled automatic transfers to and from your accounts will continue without interruption after Friday, March 20, 2026. Automatic transfers will be posted to the account nightly on the same business day the transfer is scheduled, or on the next business day if scheduled on a weekend or holiday.  

If you currently have a linked account for overdraft protection, that link will be carried over to the new system beginning on Monday, March 23, 2026. There’s no further action you need to take. If multiple overdraft sources are on file, one will be designated as the primary Overdraft Protection source. To update your primary linked Overdraft Protection source, please speak with your Banker.  

 

Download account statements and tax documents associated with your www.homestreet.com online banking accounts BEFORE Friday, March 20, 2026.  

Please talk to your local banker, branch office, or call Customer Care at 800.719.8080.  
 

FAQs

Business Loan Accounts  

Your loan account number may change. If applicable, you will receive a separate mailing before Monday, March 23, 2026 with your new loan number information.  

All business loan rates, terms, and conditions will remain the same.  

Loan payments should be made according to the original payment schedule to the address noted on your current billing statement. If there is a change to your loan payment address we will notify you by mail in advance.  

Please talk to your local banker, branch office, or call Customer Care at 800.719.8080.  

FAQs

Business Online and Mobile Banking

How do I know which Business Online Banking system to use?

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

• Online Banking Plus
The majority of businesses will transition to Online Banking Plus.

• Commercial Center Online Banking
Business clients who streamline payables with online Automated Clearing House (ACH) transfers using the ACH Network, originate wire transfers online, use Positive Pay services, and/or have 20+entities will be transitioned to the new Commercial Center Online and Mobile Banking platforms. If your business is being transitioned to the Commercial Center Online Banking platform, additional information, instructions, and training resources will be provided before March 20 - via your banker, through email, and through messaging on your current HomeStreet business online banking platform. 

FAQs

Online Banking Plus Users  

Log in to your Online Banking Plus account at www.mechanicsbank.com beginning on or after Monday, March 23, 2026.  

Please download the Mobile Banking Plus app in your app store. Look for the app with a white background, gold icon, and the words “MB Plus” below.  

UserIDs are changing. Your new UserID will be your ClientID + UserID.  If you need assistance with your UserID, Please contact Customer Care at 800.719.8080.  

Please download or print copies of your account statements and any tax documents associated with your www.homestreet.com online banking accounts BEFORE Friday, March 20. Access to your historical statements and tax documents may be limited on Online Banking Plus when you log in on Monday, March 23, 2026.  

If you use business online bill pay services, all your payee information will transfer over to the new Online Banking Plus platform. Once you have access to your account on Monday, March 23, 2026, we recommend that you check your account and bill pay/transfer information to verify it has transferred accurately. Some transferred information may be organized differently on the new platform than in your current bill pay/transfer system. Please allow time to organize your information into your preferred format.  

 

Any future-dated or recurring payments or transfers, and bill payments will transfer over to the new platform on Monday, March 23, 2026.  

For incoming wire transfers dated after Friday, March 20, 2026, please notify the senders of Mechanics Bank’s routing and transit number, which is 121102036. 

If you have access to your loan via the Commercial Real Estate link from the www.homestreet.com website, your access will remain unchanged. You will be able to access this from the Commercial Real Estate Link in the online banking section of the mechanicsbank.com website beginning Monday, March 23, 2026.    

Please talk to your local banker, branch office, or call Customer Care at 800.719.8080.  

 

FAQs

Commercial Center

Log in to your Commercial Center account at www.mechanicsbank.com beginning on or after Monday, March 23, 2026.

Yes. You will need your current HomeStreet Company ID and User ID. If your User ID uses any of these special characters, they will need to be removed: `~!#$%^*{}|[]\";'<>?

Your temporary password instructions will be emailed to you the week of March 16th and posted to the HomeStreet Business Online Banking secure portal. If you do not receive it, please call Treasury Management support by calling 800.272.1876.

Yes, but instead of a soft or hard token, a one-time passcode will be generated each time you log in. The first time you log in to Commercial Center, you will be asked to create a permanent password/PIN. Once entered, the system will generate an automated, one-time passcode that will be sent to your email or via text message to authenticate your User ID. This passcode verification step will be required with every subsequent log-in and will also be required when you initiate a wire or an ACH transfer through Commercial Center and at the approval step.

Please download the Commercial Center app in your app store. Look for the app with a gray background, gold icon, and the words “Commercial Center.” You will need a software activation key to access mobile banking the first time you enroll. Company administrators will have access to the activation key via Commercial Center.

Please download or print copies of your account statements and any tax documents associated with your www.homestreet.com online banking accounts BEFORE Friday, March 20. Access to your historical statements and tax documents may be limited on Commercial Center when you log in on Monday, March 23, 2026.  

If you use business online bill pay services, all your payee information will transfer over to Commercial Center along with 12 months of history. Once you have access to your account on Monday, March 23, 2026, we recommend that you check your account and bill pay/transfer information to verify it has transferred accurately. Some transferred information may be organized differently on the new platform than in your current bill pay/transfer system.

Any future-dated or recurring payments or transfers, and bill payments will transfer over to the new platform on Monday, March 23, 2026.

Yes. However, there will be a slight delay. The data needed to run these reports will be available on Tuesday, March 24, 2026.

For incoming wire transfers dated after Friday, March 20, 2026, please notify the senders of Mechanics Bank’s routing and transit number, which is 121102036. 

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. The same is true for ACH transfers.

No. Please be sure to download any history you wish to retain prior to March 20, 2026.

Yes. However, bill pay via Direct Connect will no longer be available. History will not be captured. Be sure to download any Direct Connect or Web Connect history you wish to retain prior to March 20, 2026.

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 online. The system only allows users at the account level 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.

Yes. ACH Block service users will be set up with ACH Positive Pay, which doesn’t block transactions from posting to the account. Transactions post and then users see exceptions that they can accept or deny if no rule was set to allow the transaction.

The notifications are changing. Users will be notified if a deposit is rejected, not when one is accepted or adjusted.

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

Your account history will be accessible via your former HomeStreet IntraFi Depositor Control Panel (DCP) portal via www.depositorcontrol.com/login. Current and future ICS and/or CDAR accounts will be transitioned to the Mechanics Bank IntraFi DCP portal.

If you have access to your loan via the Commercial Real Estate link from the www.homestreet.com website, your access will remain unchanged. You will be able to access this from the Commercial Real Estate link in the online banking section of the mechanicsbank.com website beginning Monday, March 23, 2026. 

Yes. Autobooks will no longer be available. Bill pay, ACH and wire services will no longer be available from business savings accounts. Mobile access to Positive Pay is also being discontinued.

Please talk to your local banker, branch office, or call Treasury Management support at 800.272.1876.