New Member Offer

Treat yourself to layers of sweet deals

Earn up to $300 when you join Arsenal Credit Union. Use promo code New2026 when opening your account(s) to activate the offer.

Take more control of your financial wellness and crush your goals with confidence. Opening an account online is fast and easy. Start a live chat with us in the bottom right for help.

Open account online View official rules

Earn up to $300 when you layer accounts

The more accounts and services you open, the more you can earn.

Earn $100

Checking + Savings

Open a new savings account and a checking account with a debit card. Make at least ten (10) transactions using the debit card after receiving it.

Open account online

Earn $200

Direct Deposit + Digital Banking

Complete the steps to earn $100 and add a direct deposit of any amount to your account. Also, create a new online banking account.

Open account online

Earn $300

Add a Loan

Complete the steps to earn $200 and open a credit card or loan of any type (auto, personal, home equity, etc.).

Open account online

Access your money without the fees

When you open a Free Checking account, you pay no monthly maintenance fees. There’s no monthly balance or other requirements. You get complete, free access to your money when and where you need it.

Totally Free Checking Open account online

Make the smart credit card move

Looking for one of the best credit cards for balance transfers? Pay no fees when you transfer high-interest balances to an Arsenal credit card. Rates start as low as 9.90% APR**.

Apply online More about credit cards

Your path to financial success


Access more free ATMs

You can use over 30,000 free ATMs across the country, with more than 250 in the St. Louis area.

Find a free ATM

Save time with digital tools

Deposit checks anytime, anywhere in the mobile app. Set up automatic bill pay and cross another item off your to-do list.

More digital tools

Take control of your credit journey

Monitor almost every aspect of your credit journey inside online + mobile banking. Free credit scores with no third-party apps to download

Monitor your credit score

Have questions? Talk to us.

Find your closest Arsenal location or reach out to a member service representative.

Stop by a branch

Open your account in-person at our branch at 3780 Vogel Road. Or, find another branch close to you.

Find a location

Start a live chat

Start a live chat using the button at the bottom-right of the screen. Or contact us any number of ways you find convenient.

Contact options

Terms and conditions

New member $300 promotional offer

*Membership eligibility is required. See if you're eligible here. Must be age 18+ and mention this offer at account opening. May need specific forms of identification to open an account such as a driver’s license, proof of address (utility bill,) a credit card and your Social Security Number. Note, credit will be reviewed at the time of account opening. Contact the credit union for full details. Savings account with $5.00 minimum deposit required to join Arsenal Credit Union. The incentive deposit will be paid within 30 days after promotional requirements are met. Member must remain in good standing with the credit union. May not be combined with other offers. Offer valid until 12.31.2026. Bonus will be reported as a dividend.

Credit cards

**APR=Annual Percentage Rate. Rates as of 8.1.2026. Subject to change. Read our credit card agreement and disclosure. Credit union membership and qualifications are required. Loan terms and conditions depend on credit qualifications and approval. See if you’re eligible to join the credit union here. For assistance opening accounts, applying for loans and other general inquiries, start a live chat during normal business hours.

Hit your financial and personal goals today

Open your account online with promo code New2026 to activate your offer.

Find a branch Open account online