Debit Cards

Debit CardsLost or Stolen Cards?

MCU Debit MasterCard® 

Memorial Credit Union debit cards are safe and convenient for all your purchasing needs.  We offer EMV “smart chip” technology which securely encrypts each transaction.  We also offer a full suite of Card Controls – putting even more power in the palm of your hand. 


  • Accepted wherever the MasterCard® logo is displayed
  • Convenient access to your checking account
  • Cash Back Rewards
  • Free ATM access at all MCU ATMs and our ATM Friendly locations
  • Set Debit Card Controls through MCU Online & Mobile App


Debit Card Controls

Card Control allows you to personalize the types and frequency of your alerts and block transactions based on:

  • Manage Card – You now have the ability to turn on and off debit card in real-time.
  • Spending Controls – Set spending limits by type of merchant.
  • Transaction Type Controls – Selected transactions can be controlled and dollar limits set.
  • Alerts – Can be sent on all card activity such as debit card alerts, low balance alerts.
  • And much more.

Click here to learn more


Contact us for more information
Call us at (713) 778-6300 or stop by a branch if you have additional questions about chip cards, or if you are interested in opening an account.

Important Card Information:

  • Lost/Stolen Debit MasterCard® Contact your local branch or call 24/7 services at (800)-528-2273
  • Debit MasterCard®Customer Service:  (800)-851-4859
  • Debit MasterCard® & ATM Activation  (866)-619-0245  
  • Debit MasterCard® & ATM Pin Change  (800)-851-4859

Cardholder Disputes
If you have a transaction dispute on your Debit MasterCard®, you will need to collect the following items to bring into your nearest branch in order to submit the dispute:

Debit Card Dispute Form