Mastercard® Debit Cards

The little piece of plastic with a big personality.

50 free ATMS in Lowell. 50,000+ nationwide. Yeah, we've got that.

We often refer to Mills42 as the small but mighty credit union. Let us introduce you to our poster child for that expression: The Mills42 Mastercard® Debit Card.

    Just some of the features of this versatile card:
    • Use it for online and in-store purchases wherever Mastercard is accepted.
    • Even better, you can use it with Apple Pay™ and Samsung Pay™.
    • Access to over 50,000 fee-free ATMs nationwide through the CO-OP and NYCE/SUM Networks to withdraw cash, make deposits, check your balance, and with some, deposit checks into your Mills42 checking account.

An added layer of protection:

Mills42 monitors your debit card transactions for fraud 24 hours a day. If any transactions look out of the ordinary, your card will be blocked and our fraud department will attempt to contact you. You will receive a text message and phone calls from the Mills42 fraud department asking if you authorized the transaction.

    The text message will ask for one of the following responses:
    • YES (it is a legitimate transaction)
    • NO (it is not legitimate, which then immediately blocks the card)
    • STOP (if you don't want to be notified of suspicious activity--we recommend against using this!)
    • HELP (You'll be given a number to call to speak with someone about this directly).


If you decide to opt out via text, and later want to opt back in, you will need to notify us.

Mills42 and its Fraud Department will NEVER ask for your debit card number or other personal information via text message.

Extra savings for no extra effort

You can even link your Mills42 checking account to our Round Up Savings Account, so every time you use your Mastercard Debit Card, we’ll transfer the difference between the purchase amount and the next whole dollar amount right into this savings account. You’ll be painlessly saving money, while earning interest on that money at the same time.

Impressed? We think you will be. Apply online today so we can hook you up with a Mastercard Debit Card of your very own. And don’t forget to ask about Round Up Savings, too.

    Mills42 Mastercard Debit Card Phone Numbers
    • Lost/Stolen Mastercard Debit Card: Call 888-241-2510
    • Please report all lost or stolen cards immediately to the credit union office at 978-328-5100 or contact our 24-hour customer hotline number at 1-888-241-2510 or direct at 909-941-1398.
    • Please be advised that after activation, if your Mills42 Mastercard Debit Card is lost or stolen, it can be used without needing your PIN number.
    • Card Member Security 24/7 Fraud Monitoring: Call 888-241-2440 to request a card block due to unauthorized transactions and/or remove fraud block after verifying suspected transactions are not fraudulent.

Not a member yet? We’ll take care of that for you as you’re opening your account or taking out a loan. If you want to get a jump-start, enroll online or just give us a call at 978.328.5100. We’ll be happy to help you build from here.

Click here to see our Fee Schedule