How are money market account rates set?
Money market account (MMA) rates are variable and set individually by each bank, and they typically track Fed rate moves faster than a CD (which is locked) but similarly to a high-yield savings account. The FDIC's July 2026 national average MMA rate is 0.65% APY, while top nationwide MMAs pay several times that — and many use tiered rates that only apply the top APY above a minimum balance.
A money market account (MMA) pays a variable APY that the bank can raise or lower at any time — unlike a CD, there's no rate lock. Because the rate isn't fixed, an MMA's APY tends to move in the same direction as the Federal Reserve's benchmark rate, usually within weeks of a Fed decision, similar to how a high-yield savings account's rate behaves.
What moves a money market account's rate
- Fed funds rate changes — the single biggest driver; a rate hike or cut typically shows up in MMA APYs within a few weeks. FOMC decisions are published at federalreserve.gov/monetarypolicy/openmarket.htm.
- Competitive pressure — online banks with low overhead compete on rate to attract deposits, so MMA APYs vary widely by institution even in the same rate environment.
- Balance tier — many MMAs pay a top rate only on balances above a set minimum (commonly $1,000-$10,000), with a lower rate — sometimes much lower — below that threshold.
MMA vs. savings vs. CD: how each rate behaves
- Money market account — variable, can change anytime, usually tracks the Fed closely; often includes check-writing or a debit card.
- High-yield savings account — variable, behaves similarly to an MMA rate-wise, but typically doesn't include check-writing.
- CD — fixed and locked for the term once opened; doesn't move with the Fed until it matures and you reinvest.
The tiered-rate catch
A bank advertising "up to 4.50% APY" on an MMA is often describing the rate on balances above a specific tier — a lower balance can earn a meaningfully lower rate at the same bank. Before opening an MMA for its headline APY, check the account's actual rate schedule (usually in the account's rate/fee disclosure, required under Regulation DD) to see what rate applies to the balance you'll actually keep there.
What the sources say
- The FDIC's national average money market account rate was 0.65% APY as of the July 20, 2026 National Rates and Rate Caps update. — FDIC — National Rates and Rate Caps
- The FDIC publishes updated national rate data every third Monday of the month, using the last business day of the prior month's data. — FDIC — National Rates and Rate Caps
- Regulation DD requires depository institutions to disclose APY — including any tiered or balance-dependent rate structure — on deposit account terms. — CFPB — Regulation DD
Key takeaways
- MMA rates are variable and bank-set — they can change at any time, with no advance notice required.
- The Fed funds rate is the primary driver; MMA rates typically move within weeks of an FOMC decision.
- The FDIC's national average MMA rate (0.65% as of July 2026) is far below what top nationwide MMAs post.
- Many MMAs use tiered rates — the advertised top APY may only apply above a minimum balance.
- Unlike a CD, an MMA's rate can also fall at any time — there's no lock protecting today's rate.
See our best money market accounts guide for a ranked, currently-updated comparison. To compare live MMA and savings APYs across institutions in one place, ClearValue Banking's account comparison tool lines up posted rates.
Related
Browse all answers
More answers to common questions about financing, banking, and credit.
Part of the ClearValue family