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319-824-5431 Grundy Center, IA Change Location

Notice of change in business hours

Effective January 2, 2025, all GNB Bank locations will have new hours.
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QuickBooks® and Quicken® Users

You can now import data from GNB Bank’s Online Banking directly into your QuickBooks® recordkeeping program!
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Join the GNB Team

Check out our current career opportunities
GNB Careers
Holiday Hours

Close at Noon Dec. 24. Closed Dec. 25. Close at 4:30 PM Dec. 31. Closed Jan. 1.
Transfer your money from another bank

The convenient way to move money from your account(s) at other banks. Log in to your online banking or mobile app and use the external transfer function!
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InvestmentsPlan your Future Today

What services are you looking for? Checking Savings

Are you an existing GNB Online Banking customer? Yes No

Choose what benefits are important to you Earning Interest Cash Back No Frills

Will you use a debit card for most purchases? Yes No

Please log in to your online banking account, and follow the prompts to open a new account.

Online Banking

Basic Savings

A traditional savings account to help grow your money.

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Kasasa Cash Back

A checking account that gives you cash back on your purchases.

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Choice Checking

A low-cost checking account with no balance requirements.

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Kasasa Cash

An interest earning checking account built to avoid monthly fees.

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Interest Checking

Earn interest while enjoying all the benefits of an unlimited checking account.

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Get Your Dream Home

Home Loans

Helping Farmers & Ag Operations

Ag Loans

Manage Your Finances

Personal Checking Accounts

Personal Checking Accounts

family counting money

Our Community

Impact

"Some of my favs! Always fixing - always helpful - always feel their smiles through the phone!"

Malena
GNB Customer

"They are the BEST!"

Linda and Greg
GNB Customers

"Great seeing your smile at the drive up window!"

Sonja
GNB Customer

315

Number of Organizations donated to since 2021

$

205,000+

Invested in our Communities since 2021

Icon Time

2500+

Volunteer Hours donated by staff since 2021