Change Preferred Branch

    650 Main St, Box 149 - Ackley

    103 E Center St, Box 400 - Conrad

    408 Front St - Geneva

    529 G Ave, Box 246 - Grundy Center

    510 F Ave, Box 246 - Grundy Center

    315 Main St - Iowa Falls

    300 E Main St, Box 439 - Manchester

    2504 S 2nd St, Box 736 - Marshalltown

    629 Broad St, Box 128 - Story City


Debit Cards

GNB Debit Card

Debit cards are a vital part of your financial toolbox. Make purchases, withdraw cash and manage your finances easily with a GNB debit card. For only $1 a month you can access your GNB accounts surcharge-free when using a GNB Bank ATM or any ATM in the Privileged Status Network.

  • No additional transaction fees
  • Monthly fee of $1 waived if you receive account statements electronically.

Picture Perfect Debit Cards

Customize your GNB debit card with our Picture Perfect debit card. The process is quick and easy, and the result is a debit card that shows your personality. Review our Image Guidelines and Terms & Conditions, then click on either set of numbers below.

Click/tap here if your card starts with
  Click/tap here if your card starts with

This personalized debit card is courtesy of SHAZAM myPic Studio. Unless waived as part of a promotion, your card-linked account will be debited $20 when your image is approved.


Stay on top of suspicious debit card activity with SHAZAM BOLT$. This mobile app helps you track your account in a number of ways:

  • Receive suspected fraud alerts for card-not-present transactions, large-dollar purchases or foreign transactions.
  • View balance information for a primary account attached to a debit card.
  • Block possible fraud attempts with transaction control.
  • Customize your alerts.

After you download the app for your iPhone or Android device, follow the easy-to-follow prompts to get enrolled.
Terms & Conditions

Debit Card Fraud Protection

Keeping your account safe and secure is our highest priority. We partner with Shazam, our debit card processor, to implement a fraud management solution. We provide Text Fraud Alerts. You'll receive text alerts when suspicious activity is detected on your GNB debit card. 

MasterCard® SecureCode

You can never have enough security for your debit card. Your MasterCard® debit card is enrolled in the SecureCode program, an additional layer of security that prevents unauthorized online use before it happens by confirming your identity with an additional password.

Simply go to the SecureCode website to register your debit card. Once your debit card is registered, you will be prompted for the additional password when submitting an online order at participating retailers.

The registration information you provide is secure. All the personal information you provide when registering your debit card for MasterCard® SecureCode is encrypted and stored behind a secure firewall to protect it from theft.