Score $600 from First Interstate Bank – Here's How the Double Bonus Works

If you live in one of the states where First Interstate Bank operates and you've been thinking about opening a new checking or savings account, now might be a great time. They're offering a combined $600 bonus — $300 for a new checking account and another $300 for a new savings account. The catch? You have to meet some specific requirements, but they're totally doable if you plan ahead. Let's break it down.

What You Need to Do for the $300 Checking Bonus

First up, the checking piece. You'll need to open a new personal checking account at a branch or online using the promo code FALL25BONUS. A $25 minimum deposit gets you started. Then, within 90 days of opening, you must receive three electronic deposits of at least $500 each. These can be payroll direct deposits, ACH transfers from another bank, or even some types of government benefits. Just keep in mind that transfers from another First Interstate account won't count.

Once you've met those requirements, the $300 bonus lands in your account within 45 days after the 90-day qualification period ends. So you're looking at roughly 4–5 months from opening to getting the cash.

• Eligible checking accounts: Simple Banking, Basic Checking, Select Checking, Premier Checking
• Simple Banking has a $5 monthly fee that can't be waived — factor that in
• Basic Checking fee waived with direct deposit or $250 minimum daily balance
• Select Checking fee waived with $1,500 daily balance, $5,000 combined balances, or age 60+
• Premier Checking fee waived with $10,000 daily balance or $50,000 combined balances

The Savings Side: $300 for Parking $10,000

For the savings bonus, you open a Regular Savings account with the same promo code and a $25 deposit. Then you need to bring in $10,000 in new money (funds that weren't already at First Interstate) within 30 days. That $10,000 has to stay in the account for 90 consecutive days starting on day 31. After that, the $300 bonus is credited within 45 days.

The savings account has a $5 monthly fee, but it's waived if you keep at least $200 in the account. So if you're already planning to park $10,000 there, the fee won't be an issue.

• Only the Regular Savings account qualifies for this bonus
• The $10,000 must be new money — not transferred from another First Interstate account
• You can combine the checking and savings bonuses for a total of $600

Who Can Get This and What to Watch Out For

You need to be 18 or older and a resident of one of these states: Colorado, Iowa, Idaho, Minnesota, Missouri, Montana, North Dakota, Nebraska, Oregon, South Dakota, Washington, or Wyoming. Also, you can't have had a First Interstate checking, savings, or CD account in the last 90 days, and you can't have received a bonus from them for opening a new account in the past 12 months.

One thing to keep in mind: the bonus is considered taxable income. You'll likely get a 1099-MISC or 1042-S form, so set aside some of that $600 for taxes. Also, the offer can be changed or pulled early, so don't wait until the last minute.

Bottom Line

• You can earn $600 total by opening both a checking and savings account with First Interstate Bank.
• The checking bonus requires three $500+ electronic deposits within 90 days.
• The savings bonus requires a $10,000 deposit (new money) held for 90 days.
• Offer ends November 21, 2025 — accounts must be opened by then.
• Monthly fees can be waived for most account types, but Simple Banking's $5 fee is unavoidable.

Common Questions