ATM or Debit Card - Which card is right for you?
An ATM card is used to access cash at ATMs. A debit card can be used both at ATMs and for purchases wherever debit cards are accepted.
ATM Card
Your ATM card allows you to make withdrawals from 30,000 CO-OP Surcharge-Free ATMs across the US, so you're not limited to our branches. You can also make deposits at any Mainstreet ATM location.
Activate your ATM card- Call Toll Free at 800-290-7893 Outside the US is 206-624-7998.
To set or change the PIN- Call 800-290-7893. Outside the U.S., call 206-624-7998.
To set or change the PIN- Call 800-290-7893. Outside the U.S., call 206-624-7998.
For your security, never share your PIN or write it on your card.
Debit Card
Take Control of Your Debit Card: Fast, Secure, and Simple
Mainstreet's Debit Card is your direct line to your checking account, Our Debit Card features put you firmly in control, making it simpler than ever to dispute transactions and instantly lock or unlock your card whenever you need. These features are all about providing you with greater convenience, security, and peace of mind every day. Download the app on the App Store or Google Play if you haven’t yet.
Activate your ATM card- Call Toll Free at 800-290-7893 Outside the US is 206-624-7998.
To set or change the PIN- Call 800-290-7893. Outside the U.S., call 206-624-7998.
To set or change the PIN- Call 800-290-7893. Outside the U.S., call 206-624-7998.
For your security, never share your PIN or write it on your card.
Travel & Alerts
Traveling Soon? Submit a travel notice in online access or mobile app to keep your card working smoothly on your trip. If you get a text about a transaction, just verify it to avoid interruptions.
Stay Informed with Alerts. Set up alerts to get notified instantly whenever your card is used. To get started log in online or in the Mainstreet Credit Union app, go to “Card Management,” and tap “Alerts & Protection.”
Lost or Stolen Card
To report a lost or stolen card, use the app or call 888-297-3416 (US) or 206-389-5200 (international).
Lock or Unlock your Card
(Available 8/3/2026)Lock or unlock your card in seconds—right from the app or online banking. If your card is lost, stolen, or you spot something suspicious, simply lock it with a tap.
No phone call is needed to lock or unlock—just use the app for fast, secure control.
Transaction Dispute
If you notice a transaction you don’t recognize, lock your card immediately. Start a dispute in the app or call 855-651-7474 for quick help.
Need help managing your Mainstreet Credit Union debit card? Contact us, or visit us in person at one of our branches located in North Kansas City, Missouri or the following Kansas cities: Bonner Springs, Kansas City, Lawrence, Leavenworth, Lenexa, Mission, Olathe