MutualOne Bank's Mo Premium Savings: 3.82% APY, But There's a $20,000 Catch

A 3.82% APY savings account with no monthly fee and no balance cap sounds like an easy yes. And for some people, it is. But MutualOne Bank's Mo Premium Savings comes with one requirement that knocks a lot of savers out of the running before they even start: you need $20,000 in new money just to open the account. Here's the honest breakdown of who this account fits and who should keep looking.

The $20,000 Door Fee (Well, Sort Of)

Let's get the big thing out of the way first. To earn 3.82% APY, you need to keep at least $20,000 in the account on a daily basis. That's also the minimum to open it, and the money has to be new to MutualOne — meaning it can't be cash you already had parked there.

Once you clear that bar, the rate applies to your whole balance, all the way up to $1 million. So if you're sitting on $50,000 in a big-bank savings account paying 0.4%, the math here is pretty compelling. If you've got $5,000, this account simply isn't built for you.

Who Is MutualOne Bank, Anyway?

MutualOne is a Massachusetts state-chartered mutual bank that's been around since 1889 — yes, you read that right. It's FDIC insured, so your deposits carry the same federal protection as any other insured bank.

The "mutual" structure means the bank is owned by its depositors rather than outside shareholders, which is part of why they emphasize local decision-making. For an online saver in another state, that mostly translates to a stable institution rather than a flashy fintech. Nothing wrong with that.

Moving Money In and Out

The ACH setup is workable but not unlimited. Both push and pull transfers cap out at $25,000 per day and $100,000 per month. If you're planning to fund the account from an external bank, keep those numbers in mind — a $20,000 opening deposit fits fine, but a six-figure transfer will take a few days to complete.

On the plus side, there's no limit on how many external accounts you can link, and transfers initiated from the other bank don't face restrictions. That gives you some flexibility if you're the type who likes to route money between several institutions.

The Fine Print Worth Reading

A few operational details matter here. You have to enroll in online banking and e-statements within 30 days of opening, so this isn't an account for someone who wants paper statements in the mail.

If you fund with a credit card, the limit is $1,000, and you should set your cash advance limit to $0 first — otherwise you could get hit with cash advance fees and interest from your card issuer. Honestly, bank transfer is the cleaner route.

Also worth noting: the rate is variable. MutualOne's own rate sheet shows the APY effective October 1, 2026, and explicitly says rates can change after the account is opened. That 3.82% is today's number, not a lock.

The Honest Verdict

If you've got $20,000 or more in new money sitting in a low-yield account, Mo Premium Savings is a solid, no-fee place to park it. FDIC insurance, monthly compounding, no monthly maintenance charge, and a rate that beats most brick-and-mortar banks by a wide margin.

But don't chase this rate with money you might need soon, and don't stretch to hit the $20,000 threshold by draining an emergency fund you keep elsewhere. A high APY on an account you can't comfortably fund isn't a win. And since the rate floats, check it periodically — if it drifts below what competitors offer, there's no early termination fee stopping you from moving on.

Bottom Line

• 3.82% APY requires a $20,000 minimum daily balance, and the opening deposit must be new money to MutualOne.
• No monthly fees and no early termination fee, so leaving later costs you nothing.
• ACH transfers are capped at $25K daily and $100K monthly in both directions.
• The APY is variable and can change after the account is opened.
• Enroll in online banking and e-statements within 30 days or you may not meet account requirements.

Common Questions