The Main Fee Categories in MMAs
MMA fees come in four main forms: monthly maintenance fees (waived above a minimum balance), below-minimum balance penalties (rate drops or fees triggered), excess transaction fees (charged per transaction above a monthly limit), and wire transfer or check fees for outgoing transactions.
MMA fee types and their impact on a $15,000 balance
| Fee Type | Typical Range | Annual Cost | Impact on 4.65% $15K |
|---|---|---|---|
| Monthly maintenance | $5–$25/month | $60–$300 | Reduces yield to 1.65%–4.25% |
| Below-minimum rate drop | Near 0.01% APY | Near-total yield loss | Severe — avoid at all costs |
| Excess transaction fee | $2–$15 per over-limit | Varies | Minimal if used normally |
| Outgoing wire fee | $15–$35 per wire | One-time | Avoidable |
The Minimum Balance Fee Trap
The most common MMA fee trap: a bank advertises 4.65% APY but charges $15/month if your balance drops below $10,000. On a $10,500 balance the $180/year fee cuts your effective APY from 4.65% to 2.94%. On a $9,000 balance the fee eliminates nearly all interest.
Top online banks — Ally UFB Direct Sallie Mae — charge no monthly maintenance fees and have no minimum balance for the top rate. If any MMA has fees keep looking before you open an account.
True MMA effective yield after fee impact by balance
| Balance | Gross Interest 4.65% | Annual Fee $180 | Net Interest | True Effective APY |
|---|---|---|---|---|
| $50,000 | $2,325 | $0 (waived) | $2,325 | 4.65% |
| $15,000 | $697.50 | $0 (waived) | $697.50 | 4.65% |
| $9,000 | $418.50 | $180 | $238.50 | 2.65% |
| $5,000 | $232.50 | $180 | $52.50 | 1.05% |
Transaction Limit Fees at MMAs
While the Fed removed the 6-transaction limit in 2020 some banks still impose their own limits. Going over them triggers fees of $2–$15 per excess transaction. If you write 8 checks per month at a bank with a 6-check limit you pay 2 excess fees. This only matters if you actively use the check-writing feature frequently.
- Check if your MMA has a transaction limit and fee — call or read the account agreement
- Count your typical monthly check and debit transactions against the limit
- If you regularly exceed limits switch to an MMA with no transaction limit
- Many top online MMAs have no transaction limit since the 2020 Reg D change
Calculate Your True MMA Net Yield
Enter your balance, APY, and any monthly fees to see your actual effective annual return.