Highest-yielding tax-exempt (municipal) money market funds
Ranked by June 2026 month-end SEC 7-day net yield (≥$100M net assets).
Data: June 2026 month-end SEC filings
All figures are from the June 2026 month-end Form N-MFP filings (report date ) — money-market funds must file within five business days of month-end. Regulatory data, not live quotes.
- The highest 7-day net yield among tax-exempt (municipal) money market funds with at least $100 million in net assets is 2.69%, reported by MOFXX (FEDERATED HERMES MUNICIPAL OBLIGATIONS FUND) as of .
- 66 tax-exempt classes (≥$100M) reported a 7-day yield for June 2026; the median was 2.42%.
- Tax-exempt fund yields are not directly comparable to taxable yields — their income is generally exempt from federal income tax, so the after-tax comparison depends on the investor's bracket.
| # | Ticker | Fund | Category | 7-day yield | Net assets | Min. investment |
|---|---|---|---|---|---|---|
| 1 | MOFXX | FEDERATED HERMES MUNICIPAL OBLIGATIONS FUND | Tax-exempt (national) | 2.69% | $5.2B | $500,000 |
| 2 | VMSXX | Vanguard Municipal Money Market Fund | Tax-exempt (national) | 2.65% | $18.2B | $3,000 |
| 3 | JOIXX | JPMorgan Institutional Tax Free Money Market Fund | Tax-exempt (national) | 2.65% | $1.2B | $50,000,000 |
| 4 | FTFXX | FEDERATED HERMES INSTITUTIONAL TAX-FREE CASH TRUST | Tax-exempt (national) | 2.64% | $964.3M | $5,000,000 |
| 5 | CIFXX | Western Asset Select Tax Free Reserves | Tax-exempt (national) | 2.63% | $108.0M | $1,000,000 |
| 6 | VYFXX | Vanguard New York Municipal Money Market Fund | Tax-exempt (single state) | 2.62% | $3.6B | $3,000 |
| 7 | JOCXX | JPMorgan Institutional Tax Free Money Market Fund | Tax-exempt (national) | 2.60% | $1.0B | $50,000,000 |
| 8 | FFTXX | FEDERATED HERMES INSTITUTIONAL TAX-FREE CASH TRUST | Tax-exempt (national) | 2.59% | $2.2B | $500,000 |
| 9 | WFNXX | Allspring National Tax-Free Money Market Fund | Tax-exempt (national) | 2.59% | $1.8B | $10,000,000 |
| 10 | MFCXX | FEDERATED HERMES MUNICIPAL OBLIGATIONS FUND | Tax-exempt (national) | 2.59% | $327.1M | $500,000 |
| 11 | TBIXX | FEDERATED HERMES TAX-FREE OBLIGATIONS FUND | Tax-exempt (national) | 2.58% | $5.4B | $500,000 |
| 12 | IJMXX | JPMorgan Municipal Money Market Fund | Tax-exempt (national) | 2.58% | $1.9B | $10,000,000 |
| 13 | TBVXX | FEDERATED HERMES TAX-FREE OBLIGATIONS FUND | Tax-exempt (national) | 2.58% | $375.9M | $250,000 |
| 14 | JOFXX | JPMorgan Institutional Tax Free Money Market Fund | Tax-exempt (national) | 2.57% | $320.0M | $10,000,000 |
| 15 | SNYXX | Schwab New York Municipal Money Fund | Tax-exempt (single state) | 2.56% | $2.1B | $1,000,000 |
| 16 | JGNXX | JPMorgan New York Municipal Money Market Fund | Tax-exempt (single state) | 2.56% | $1.4B | $10,000,000 |
| 17 | MCSXX | MUNICASH | Tax-exempt (national) | 2.55% | $4.0B | $3,000,000 |
| 18 | FTCXX | Fidelity Investments Money Market Tax-Exempt Portfolio | Tax-exempt (national) | 2.54% | $11.8B | $1,000,000 |
| 19 | JTFXX | JPMorgan Tax Free Money Market Fund | Tax-exempt (national) | 2.54% | $9.0B | $10,000,000 |
| 20 | FNKXX | Fidelity New York Municipal Money Market Fund | Tax-exempt (single state) | 2.54% | $3.1B | $1,000,000 |
| 21 | NISXX | FEDERATED HERMES NEW YORK MUNICIPAL CASH TRUST | Tax-exempt (single state) | 2.54% | $696.6M | $10,000 |
| 22 | SWOXX | Schwab Municipal Money Fund | Tax-exempt (national) | 2.53% | $14.3B | $1,000,000 |
| 23 | JMAXX | JPMorgan Municipal Money Market Fund | Tax-exempt (national) | 2.53% | $199.6M | $5,000,000 |
| 24 | SCTXX | Schwab AMT Tax-Free Money Fund | Tax-exempt (national) | 2.52% | $2.9B | $1,000,000 |
| 25 | FTXXX | Goldman Sachs Investor Fund - Tax-Exempt Money Market | Tax-exempt (national) | 2.51% | $4.3B | $10,000,000 |
Screen: ticker share classes with at least $100 million in net assets and a reported 7-day net yield on the June 2026 month-end filings (578 of 873 ticker classes). Tiny classes are excluded because they report outlier yields; the full CSV has every class. Rankings are arithmetic on SEC filings — not recommendations.
FAQ
What is the highest-yielding tax exempt money market fund?
As of the June 2026 month-end SEC Form N-MFP filings, the highest 7-day net yield among tax-exempt (municipal) money market funds with at least $100 million in net assets is 2.69%, reported by MOFXX (FEDERATED HERMES MUNICIPAL OBLIGATIONS FUND).