What Is a Money Market Account for Businesses?

A business money market account (MMA) is an interest-bearing deposit account that lets a company earn a higher yield on idle cash than a standard checking account while keeping limited spending access through checks, a debit card, or transfers. It sits between a business checking account and a business savings account or CD: you get some of the liquidity of checking and most of the yield of savings, usually in exchange for a higher minimum balance and a cap on how many withdrawals you make each month.

For an owner, the practical job of an MMA is simple — hold reserve cash, sales-tax set-asides, payroll floats, or a rainy-day buffer somewhere it earns money and stays FDIC-insured, without locking it up the way a certificate of deposit does. It is a place to store cash, not a tool to raise cash. That distinction matters, and we come back to it below.

How a business money market account actually works

An MMA is a deposit account, so the bank or credit union pays you interest for keeping money there and, in turn, lends that money out. The rate is variable — it moves with broader short-term rates, and the bank can change it at any time. Yield is quoted as an APY (annual percentage yield), which already accounts for compounding, so it is the number worth comparing across institutions.

Three features define the account:

• Tiered interest. Many business MMAs pay a higher APY as your balance climbs past set thresholds — for example, one rate under $25,000 and a better rate above it. Read the tier grid, not just the headline rate.
• Limited transactions. Historically MMAs were capped at six "convenient" withdrawals or transfers per month under federal Regulation D. That hard cap was suspended in 2020, but most banks still impose their own monthly limit and charge a fee per excess withdrawal. Treat it as a limited-access account.
• Balance minimums. Business MMAs typically require a higher opening deposit and a higher average balance than personal ones to avoid monthly maintenance fees. Fall below and the fee can quietly erase your interest.

Funds are federally insured — up to $250,000 per depositor, per institution, per ownership category at an FDIC-insured bank, or the equivalent NCUA coverage at a credit union. That insurance is the whole point of parking reserve cash here rather than chasing yield in something uninsured.

MMA vs. business checking, savings, and CDs

Owners mix these up constantly, so here is the plain hierarchy from most liquid to least:

• Business checking — unlimited transactions, little or no interest. Your operating account.
• Business money market — some check/debit access, limited monthly withdrawals, higher yield. Your reserve account.
• Business savings — usually no check-writing, similar or slightly lower yield, also transaction-limited. Overlaps heavily with an MMA; the MMA edge is spending access.
• Business CD — highest fixed rate, but money is locked for a term and there is an early-withdrawal penalty. Your "I won't touch this for 12 months" account.

The MMA's whole value proposition is the middle ground: it pays more than checking and gives you access that a CD does not. If you never need to touch the money, a CD or a high-yield savings account may pay more; if you need frequent access, checking is simpler. The MMA wins when you want reserve cash to earn and stay reachable.

Example: what a business MMA might look like

The figures below are illustrative — for example only — to show how tiers, minimums, and access typically interact. Actual terms vary by institution and change with market rates.

The takeaway: the MMA rarely pays the most, but it is the only line that combines a real yield with the ability to write a check when a bill or opportunity shows up.

The pros and cons owners actually feel

Where an MMA helps:

• Idle cash earns instead of sitting flat in checking.
• FDIC/NCUA insurance keeps reserves safe.
• Check and debit access means you can reach the money without breaking a term.
• A separate reserve account enforces discipline — tax money and payroll floats stay untouched.

Where it bites:

• High minimums. The best tiers often demand $25,000–$50,000+; small balances earn the low tier or trigger fees.
• Variable rates. The APY you opened with can drop next month with no notice.
• Transaction limits and fees. Treat it like checking and the excess-withdrawal fees add up fast.
• Opportunity cost. This is the big one for growing companies: cash sitting in an MMA earning a few percent is not cash deployed into inventory, equipment, or marketing that can return far more.

Decision framework: when an MMA fits, and when it doesn't

A business money market account works best when:

• You have genuinely idle cash — reserves, tax set-asides, seasonal surplus — that you won't need to touch more than a handful of times a month.
• You can comfortably hold the minimum balance without straining operating cash.
• You want a safe, insured place for a buffer and value liquidity over squeezing out the last basis point of yield.
• You're building a cash cushion ahead of a known future expense but want access in case plans shift.

Avoid leaning on an MMA when:

• You're short on working capital now — an MMA stores cash, it does not create it. Draining your reserve to cover a gap leaves you both broke and unbuffered.
• You need frequent access; the transaction cap and fees make checking the better home.
• Your balance is too small to clear the minimum — you'll pay fees that outrun the interest.
• You have a real growth opportunity or an urgent cash-flow gap. Cash parked at a modest APY is often earning far less than the same dollars would if deployed into the business — or than the cost of scrambling when a shortfall hits.

That last point is where most owners searching this topic actually land: the question isn't really "where do I store surplus cash," it's "I don't have surplus cash and I need funding." Those are opposite problems.

When the real problem is cash flow, not where to park it

If you're reading about money market accounts because payroll, inventory, a tax bill, or a growth push is straining your cash, a deposit account is the wrong tool. An MMA is a bucket; you need water in it first. When timing is the issue — money is coming, just not fast enough — the practical fix is working capital, not a savings vehicle.

The most accessible option for revenue-generating small businesses is revenue-based financing through an MCA marketplace. Instead of underwriting mainly on your personal credit score, these funders look at your bank deposits and revenue — how much real money flows through the business. That opens the door for owners who'd be declined on credit alone. Typical parameters we see:

• Approval driven by bank statements and revenue trends, with credit a secondary factor — FICO 500+ is often workable.
• Funding amounts starting around $10,000 and scaling with monthly revenue.
• Decisions and funding commonly in 24–48 hours, versus weeks for a bank line.
• Repayment tied to sales through a fixed daily or weekly remittance, so it flexes with your cash flow rather than a rigid amortization.

Nothing here is ever guaranteed — approval and terms depend on your deposits, time in business, and industry. But for a company that's generating revenue and simply needs to bridge timing or fund growth, this is usually faster and more attainable than opening a deposit account and waiting to save your way there. See our pillar guides on business funding options and revenue-based financing to compare the paths.

How to choose and open a business MMA

If a money market account genuinely fits your reserve strategy, compare on these five points before signing:

• The full tier grid, not the headline APY — know what your actual balance will earn.
• Minimum balance to earn the rate and to avoid the monthly fee — these are often two different numbers.
• Withdrawal limit and excess-transaction fee — match it to how often you'll really move money.
• Access tools — check-writing, debit card, ACH, and mobile transfers all vary by bank.
• Insurance — confirm the institution is FDIC- or NCUA-insured and that your balance stays within coverage limits.

To open, you'll typically need your EIN, business formation documents, ownership and beneficial-owner information, and an opening deposit. Online banks and credit unions frequently pay better rates than large national banks, so shop beyond your primary bank before defaulting to convenience.