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Welcome to more services, more products, more opportunities, Simmons Bank and Landmark

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. 

Your transition to Simmons Bank will be official on Oct. 12, 2021. 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 Oct. 12 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.


Training videos, user guides, quick reference guides and a conversion checklist are all available by clicking the links below. Printed user guides are available upon request by contacting your banker.


Please be aware that Simmons Bank will never contact you to verify private information such as account numbers or login credentials. If you receive a suspicious call, text or email, contact Simmons Bank at 1-866-246-2400 or email to report the incident.



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, Oct. 12 to request to receive information about Fed Reporter services since there will be additional costs after the three month waiver has expired.


Landmark Community Bank Bill Pay will be unavailable beginning on Oct. 8 at 5 p.m. CT. Your payees, scheduled payments and bill pay history will be transferred at conversion. The first time you access Bill Pay after Oct. 12 you will need to set up your Bill Pay entitlements. Landmark Community Bank will process any scheduled payments through Oct. 8. Payments scheduled after Oct. 8 will process at Simmons Bank beginning Oct. 12.


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, Oct. 12.


You will remain on the Remote Deposit Now platform. You must access Remote Deposit via Treasury Connect (online banking).


The last day to originate ACH transactions will be Thursday, Oct. 7. Please plan ahead for any transactions with an effective date of Oct. 8 or Oct. 12 by initiating these transactions prior to 3 p.m. CT on Thursday, Oct. 7. As a reminder, Monday, Oct. 11 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 Community Bank routing number (084008468) will continue to settle correctly. Prior to updating routing numbers 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 Community Bank 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.


More information will be provided in the coming weeks regarding Check and ACH Positive Pay.


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, Oct. 8 at 5 p.m. CT. Access will be restored at 8 a.m. CT on Tuesday, Oct. 12. 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 at the top left 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. If you previously used Mobile Deposit, that function will be available in the app.

Download on the App Store

Get it on Google Play


Prior to conversion, we recommend downloading and saving eStatements from your Landmark Community Bank online banking system, as eStatements will not immediately transition to Simmons Bank. You will receive two statements for October: one ending Oct. 8 and one ending Oct. 29. If the eStatement for an account was available under more than one online banking 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 Community Bank'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 Oct. 12. This will prevent any issues with entities not recognizing Landmark Community Bank's routing number and therefore declining those wires. 

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