Snag a $300 Bonus from Mainstreet Credit Union – Here's How

Looking for an easy way to pad your savings? Mainstreet Credit Union is offering a $300 bonus for new checking account customers. The catch? You'll need to jump through a few hoops, but they're totally doable if you plan ahead. Let's break down exactly what you need to do to get that cash.

What You Need to Do for the $300 Bonus

The process is pretty straightforward, but you have to hit every step. First, open a new Mainstreet checking account—they call it a 'Spend' account. You can do this online or at a branch. Then, within 90 days of opening, you need to: enroll in eStatements, make 25 debit card purchases (ATM withdrawals don't count), and set up two direct deposits totaling at least $800. Those deposits can come from payroll, a pension, or government benefits, and they need to be sent via ACH or RTP.

Once you've done all that, Mainstreet will deposit the $300 into your savings account within 60 days. Just make sure your account stays active and in good standing—no funny business, or you might forfeit the bonus.

• Open a new checking account by June 30, 2026
• Enroll in eStatements in online banking or the app
• Make 25 debit card purchases (point-of-sale only) within 90 days
• Receive two direct deposits totaling $800+ within 90 days
• Keep the account active and positive until bonus is paid

Which Checking Account Should You Pick?

Mainstreet offers several checking options, and the bonus is available for most of them. The Cash Back Spend account gives you 2% cash back on the first $250 in debit card purchases each month—nice if you use your card a lot. The High Yield Spend account earns a competitive APY (starting at 3.00% APY as of this writing), but it requires a $1,000 minimum balance to avoid a $10 monthly fee. There's also a Classic Spend for members 55+, and a Student Spend for ages 10–26.

If you want to avoid fees, the Free Plus Checking (Cash Back Spend) has no monthly service charge, no minimum balance, and no minimum opening deposit. That's probably the easiest route for most people.

• Cash Back Spend: No monthly fee, 2% cash back on first $250 in debit purchases monthly
• High Yield Spend: $1,000 min balance to avoid $10 fee, earns tiered APY
• Classic Spend: For ages 55+, no monthly fee, includes free checks
• Student Spend: For ages 10–26, no monthly fee, ATM fee forgiveness up to $5/month

Things to Watch Out For

First, this offer is only for new checking customers or current members who don't already have a checking account. If you've had a checking account with Mainstreet in the past 90 days, you're out of luck. Also, you can only get one checking bonus every three years, so don't try to game the system.

The bonus is taxable—Mainstreet will report it to the IRS as an extraordinary dividend, so expect a 1099-INT or similar form. And remember, you need to be a credit union member to open an account. Membership is open to people who live, work, worship, or attend school in certain areas of Kansas and Missouri. Check their website for full eligibility details.

• Not available if you've had a checking account with Mainstreet in the last 90 days
• One bonus per person, and only one checking bonus every three years
• Bonus is taxable income; will be reported to the IRS
• Membership eligibility required—check if you qualify based on location or affiliation

Bottom Line

• Open a new Mainstreet checking account by June 30, 2026, to qualify for the $300 bonus.
• Complete three steps within 90 days: enroll in eStatements, make 25 debit purchases, and set up $800+ in direct deposits.
• Choose a fee-free account like Cash Back Spend to avoid monthly charges.
• The bonus is paid into your savings account within 60 days after you meet requirements.

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