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Better Together. Simmons Bank Member FDIC and Landmark Bank Member FDIC.


As you transition to becoming a Simmons Bank Treasury Management customer - and as we transfer your accounts - there are some key dates and details to remember. For complete details, click here to download a detailed conversion checklist.

Your transition to Simmons Bank will be official on Feb. 18, 2020. After conversion, you will have an assigned dedicated service advisor to work with for all your Treasury service needs. You will receive an email in the weeks following Feb. 18 with their name and direct contact information.

Until that time, please email or contact our Treasury Management Customer Service team at 1-800-551-4471 with any questions.


Please be aware that Simmons Bank will never contact you to verify private data. If you receive a suspicious call, text or email, please email or call 1-866-246-2400 to report the incident.


Printed User Guides have been mailed to your company. Additional resources are available by clicking the link below.



ACH addenda information is presented in online banking when viewing transactions. If you wish to have addenda information delivered via email, please contact us after Tuesday, Feb. 18 to request to receive Fed Reporter emails.


Landmark Bill Pay will be unavailable beginning on Feb. 14 at 2 p.m. CT. Your payees, scheduled payments and bill pay history will be transferred at conversion. The first time you access Bill Pay after Feb. 18 you will need to set up your Bill Pay entitlements. Landmark will process any scheduled payments through Feb. 14. Payments scheduled after Feb. 14 will process at Simmons Bank beginning Feb. 18.


When you log in for the first time, please confirm that user entitlements are correct. If you are an Administrator, please review your users and their entitlements and limits to ensure they are correct.


Recurring ACH originations and transfers will not be converted from the current online banking system. You will need to schedule these transactions and recurring transfers in Simmons’ online banking system beginning Tuesday, Feb. 18.


Between Feb. 10 and Feb. 24 we will assist you with installing your new Remote Deposit driver. Please click here to register for your preferred installation time. It is important to plan ahead and note that once your installation is complete, you will not be able to submit deposits to your Landmark account. Deposits cannot be submitted to your Simmons account until Tuesday, Feb. 18. If your company has multiple scanners you will need to make a separate installation appointment for each scanner as only one scanner can be installed per appointment. When making the appointment, please register the name and phone of the user who will be available to take the call and perform the installation. A quick how-to guide for uninstalling your current driver is available here. Please uninstall your old driver on the morning of your installation appointment. If your Landmark driver is not uninstalled at the time of your appointment, the appointment will need to be rescheduled. Before Tuesday, Feb. 18 your current Remote Deposit Admin will receive new login credentials. The user guide and quick reference guides at will assist you in how to create a remote deposit on the new system.


The last day to originate ACH transactions will be Thursday, Feb. 13. Please plan ahead for any transactions with an effective date of Feb. 14 or Feb. 18 by initiating these transactions prior to 5 p.m. CT on Thursday, Feb. 13. As a reminder, Monday, Feb. 17 is a federal holiday which means ACH transactions cannot be effective on this date.

It is not necessary to update the routing number associated with ACH originations at this time. ACH transactions originated with the Landmark routing number (081500862) will continue to settle correctly. Prior to updating the routing number from Landmark to Simmons, please verify with the receiver that their account number was not changed.


Simmons Bank requires self-administration for Treasury Management Services. For online banking, any users with administrative permissions in the Landmark online banking system will be given administrative permissions in the Simmons online banking system. All administrators will need to check their users’ permissions post conversion and contact or our Treasury Management Customer Service team at 1-800-551-4471 with any changes or questions.


A member of the Treasury Management Customer Service team will contact you prior to conversion to assist with mapping your check issue files. You will be provided with file format requirements and the service team will help you determine if any adjustments to your file format are necessary.


If your account number has changed you will be notified by your banker or Treasury Management Customer Service with further instructions. You will also receive information via mail from Deluxe, our preferred check supplier.


You will be unable to access online banking over conversion weekend beginning on Friday, Feb. 14 at 2:00 p.m. CT. Access will be restored at 8 a.m. CT on Tuesday, Feb. 18. You will receive an email communication from with your login information and from with your initial login link.


After your initial log in please click the arrow next to your username and select “Notification Setup” to confirm enrollment and set notification preferences.


Access balances, transfer funds, approve wires and ACH payments, and decision Positive Pay exceptions using your smartphone with the Simmons Treasury Management app - available for Apple®, Samsung® and Android® devices. This feature will give you quick access to your accounts anywhere you go, 24 hours a day, 7 days a week.

Download on the App Store

Get it on Google Play


Prior to conversion, we recommend downloading and saving eStatements from Landmark’s online banking system, as eStatements will not immediately transition to Simmons Bank. You will receive two statements for February: one ending Feb. 14 and one ending Feb. 29. If the eStatement for an account was available under more than one online banking company profile, that eStatement will be available under the online banking company profile identified as the primary owner of the account. eStatements for the same account cannot be accessed under multiple online banking company profiles.


Incoming wires using Landmark’s routing number will continue to route to Simmons for 30 days. However, we strongly encourage you to update all wires to Simmons’ routing number (082900432) beginning Feb. 18. This will prevent any issues with entities not recognizing Landmark’s routing number and therefore declining those wires.

  • {97} Benefits and features are subject to customer qualification and approval by Simmons Bank.
  • {165} All accounts subject to approval. Restrictions apply.

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    Apple Pay and Touch ID are trademarks of Apple, Inc.
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