Making purchases is simpler and safer with a Mastercard® debit card. No fees, no cash or checks, no worries.

Use this card to make purchases anywhere the MasterCard® logo is displayed at millions of places in the U.S. and abroad. Unlike a credit card, the funds come directly out of your checking account when you make a purchase.

  • Use it to make cash withdrawals at ATM machines
  • No annual fee
  • No transaction fees
  • Accepted worldwide
  • Easier than writing a check
  • Monthly checking statement shows all your transactions
  • Track your purchases 24-hours a day via telephone banking

Debit Card Guide to Mastercard BenefitsPDF DownloadOpens in New Window (as of July 1, 2019)

At St. Mary's Credit Union, keeping your accounts and your identity secure are of the utmost importance. That's why we sometimes place blocks on particular merchants or locations where high levels of fraudulent activity are reported. We work closely with MasterCard to monitor current fraud patterns and add or remove blocks as these patterns change.

If we detect suspicious activity, you may receive a text message or phone call with details about the transaction. Simply respond to the text message "YES" to confirm the charge was authorized or "NO" to let us know the charge was NOT authorized.

If you are planning to use your St. Mary's Credit Union debit card outside of Massachusetts or if you are traveling abroad, please let us know so we can ensure that your card is ready for travel.  You can provide us with your travel plans by visiting the Banking Services in Online or Mobile Banking, calling our Member Solutions Center at 508-490-8000 or by visiting any of our convenient branch locations.  You can also use any of these options to update or add your cell phone number.

Click here for our Frequently Asked Questions