Money market accounts pay higher interest than regular savings accounts because banks invest those deposits in short-term debt like Treasury bills and commercial paper that reprice quickly with the market, and because the account’s higher minimum balance and transaction limits give the bank a steadier, cheaper pool of capital to work with. As of early 2026, the national average money market account yields about 0.43% APY against 0.39% for a standard savings account, but the top of the market tells the real story: the best money market accounts pay between 3% and 4% APY, several times what a typical savings account earns. Three forces produce that gap.
What the Bank Does With Your Deposit
The interest you earn is a share of what the bank earns on your money. With a money market account, deposits are channeled into short-term, low-risk instruments: Treasury bills with maturities from four weeks to 52 weeks, certificates of deposit issued by other banks, and commercial paper, which are short-term IOUs from large, creditworthy corporations.1TreasuryDirect. Treasury Bills
Because those instruments mature quickly, the bank is constantly rolling proceeds into whatever rates the market is offering now. A portfolio earning 4.5% on commercial paper and T-bills can support paying you 3.5% to 4.0% after the bank covers its costs and takes its margin. Standard savings deposits, by contrast, often end up backing longer-term loans such as mortgages, where the bank’s return is locked in for years and largely insensitive to current conditions. That is why a savings account yield barely moves while a money market yield can shift within weeks.
Why the Minimum Balance Is Higher
Larger deposits are cheaper for a bank to administer per dollar and produce a more predictable pool of capital to invest. That is the trade the higher rate is paying for. Many money market accounts require minimum deposits from a few hundred to several thousand dollars, with some institutions setting the bar at $2,500 or $5,000. Regular savings accounts often open with $25 or nothing at all.
Many banks layer tiered interest on top of the minimum. Your rate climbs as your balance crosses set thresholds, so a balance under $10,000 might earn a modest rate while crossing $25,000, $50,000, or $100,000 unlocks progressively higher yields. The logic is direct: the more you deposit, the more the bank has to invest, and the more it can afford to pass back.
The other side of the trade is that dropping below the minimum can trigger monthly maintenance fees, commonly $10 to $15. On a smaller balance those fees can erase your interest, so the higher rate only pays off if you can hold the minimum comfortably. Some online banks have dropped minimums entirely and priced their APY slightly lower to compensate.
Why Transaction Limits Exist
The less often you pull money out, the more confidently a bank can hold your deposits in instruments that take weeks or months to mature. Stability at the account level is what makes the underlying strategy work, and it is why money market accounts historically came with tighter withdrawal rules than checking accounts.
Before 2020, the Federal Reserve’s Regulation D capped certain electronic transfers and withdrawals from savings-type accounts, including money market accounts, at six per month.2eCFR. 12 CFR 204.133 – Multiple Savings Deposits Treated as a Transaction Account In April 2020, the Fed deleted that numerical limit through an interim final rule, allowing unlimited transfers “regardless of the number of such transfers and withdrawals or the manner in which such transfers and withdrawals are made.”3Federal Register. Regulation D: Reserve Requirements of Depository Institutions The current regulatory text reflects this change.4eCFR. 12 CFR 204.2 – Definitions
In practice, many banks kept the six-transaction cap. The regulation no longer requires it, but limiting withdrawals still makes liquidity easier to manage, which is what supports the yield in the first place. If your bank still enforces the limit, exceeding it can bring per-transaction fees or a conversion of the account to standard checking. The rules now vary bank by bank, so your account agreement is the only place to check.
How the Federal Funds Rate Flows Through
Money market account rates track the federal funds rate more closely than almost any other consumer banking product. The federal funds rate is what banks charge each other for overnight lending, and it sets the floor for short-term interest rates across the economy.5Federal Reserve. Economy at a Glance – Policy Rate As of early 2026, the Fed’s target range sits at 3.5% to 3.75%, which is why the best money market APYs cluster in the 3% to 4% range.
When the Fed raises rates, money market yields tend to follow within weeks. Standard savings rates move much more slowly, if at all. The mechanism is the same short-term portfolio behind your account: as T-bills and commercial paper mature and get reinvested at new rates, the bank’s portfolio yield adjusts fast. The reverse is also true. When the Fed cuts, your APY will drop faster than it would on a product built on longer-term investments.
Banks also treat money market rates as a competitive tool. A depositor with $50,000 or $100,000 is worth more than fifty accounts of $1,000 each, so institutions price aggressively to pull those balances away from competitors.
The Catch: Promotional and Tiered Rates
A rate noticeably above the rest of the market is often a promotional or teaser rate meant to attract new deposits. These typically last a few months before reverting to the bank’s standard rate, which can be considerably lower. Other offers are conditional rather than time-limited, keyed to maintaining direct deposit, hitting a balance threshold, or making a set number of debit transactions each month.
Before opening an account on the strength of a headline number, check whether the APY is permanent or promotional, what it reverts to, and what conditions apply. A 5% teaser that falls to 2% after 90 days is worse over a full year than a steady 3.75% with no strings. And if the account is tiered, the advertised rate may only apply above a balance you don’t plan to hold. The disclosure is where the real rate lives.
A Note on Money Market Mutual Funds
One point of confusion is worth clearing up, because the names are nearly identical and the products are not. A money market account is a bank deposit product insured by the FDIC or NCUA.6Consumer Financial Protection Bureau. What Is a Money Market Account A money market mutual fund is an investment sold by brokerages. It is not federally insured, and its share price can fall below the target $1.00 under stress, an event known as breaking the buck.7Securities and Exchange Commission. Money Market Fund Reforms – Final Rule Both products invest in similar short-term instruments, which is part of why bank money market accounts can pay what they do, but the yield you see on a mutual fund is not directly comparable because the risk profile is different.
Put together, the higher rate on a money market account is not a favor. It is the price banks pay for deposits that are larger, steadier, and invested in securities that reprice with the market. When those conditions hold, the yield holds. When any of them slips, whether through a balance drop, an exceeded transaction limit, or a Fed cut, the rate slips with it.