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 Welcome to Your New MasterCard!

  You will enjoy many new benefits including:
• Uninterrupted account access — Purchases and ATM withdrawals will continue to be deducted from your existing checking account, just like before.
• Continued convenience and security — Shopping with your card is faster than writing checks and safer than carrying cash, plus you’re protected with Zero Liability for unauthorized purchases.
• Great new benefits — You will have access to all new benefits and continue to enjoy your Extra Rewards program. Check out the full list of MasterCard benefits.
• Easily and conveniently update your pin anytime by calling 877-746-6746


To begin using your cardholder benefits follow these 4 steps today:


Call 1- 800 - 411- 6390 to activate and set your pin or click to Activate Card Now


Sign the back of your new Mastercard.


Destroy and discard your old Visa® debit card.


Notify merchants of your new card number if they automatically bill
your debit card. 

Learn more about your new MasterCard with this complete guide and as always feel free to Contact Us with any questions.   

 *Please Note*   Visa Debit Cards will continue to work until February 28th.  Guardian Credit Cards are not affected by this change to MasterCard, they will remain Visa.
Master Card Member Service – 1 - 800 - Mastercard (1 - 800 - 627 - 8372)
Master Card Online Activation –
To report a lost or stolen VISA Credit Card 1– 800- 627 - 8372 or in a new Window)
 or Login to your Guardian Mobile App and control your card as needed. Card Control How To
Security Reminder:
**NEVER share your PIN with anyone. Guardian Credit Union will NEVER ask for your PIN. If you receive an unsolicited call, text or email asking for your PIN or other personal account information do not respond**