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Highest-yielding tax-exempt (municipal) money market funds

Ranked by August 2026 month-end SEC 7-day net yield (≥$100M net assets).

Data: August 2026 month-end SEC filings

All figures are from the August 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.

#TickerFundCategory7-day yieldNet assetsMin. investment
1MOFXXFEDERATED HERMES MUNICIPAL OBLIGATIONS FUNDTax-exempt (national)2.46%$5.5B$500,000
2TBIXXFEDERATED HERMES TAX-FREE OBLIGATIONS FUNDTax-exempt (national)2.38%$5.8B$500,000
3WFNXXAllspring National Tax-Free Money Market FundTax-exempt (national)2.38%$2.0B$10,000,000
4TBVXXFEDERATED HERMES TAX-FREE OBLIGATIONS FUNDTax-exempt (national)2.38%$407.2M$250,000
5JOIXXJPMorgan Institutional Tax Free Money Market FundTax-exempt (national)2.36%$1.7B$50,000,000
6MFCXXFEDERATED HERMES MUNICIPAL OBLIGATIONS FUNDTax-exempt (national)2.36%$327.3M$500,000
7FTFXXFEDERATED HERMES INSTITUTIONAL TAX-FREE CASH TRUSTTax-exempt (national)2.35%$887.4M$5,000,000
8CIFXXWestern Asset Select Tax Free ReservesTax-exempt (national)2.35%$122.4M$1,000,000
9VMSXXVanguard Municipal Money Market FundTax-exempt (national)2.34%$18.2B$3,000
10SWOXXSchwab Municipal Money FundTax-exempt (national)2.33%$14.7B$1,000,000
11FTXXXGoldman Sachs Investor Fund - Tax-Exempt Money MarketTax-exempt (national)2.33%$4.7B$10,000,000
12JTFXXJPMorgan Tax Free Money Market FundTax-exempt (national)2.32%$7.8B$10,000,000
13SCTXXSchwab AMT Tax-Free Money FundTax-exempt (national)2.32%$3.1B$1,000,000
14IJMXXJPMorgan Municipal Money Market FundTax-exempt (national)2.32%$1.8B$10,000,000
15VYFXXVanguard New York Municipal Money Market FundTax-exempt (single state)2.31%$3.6B$3,000
16JOCXXJPMorgan Institutional Tax Free Money Market FundTax-exempt (national)2.31%$705.3M$50,000,000
17FTCXXFidelity Investments Money Market Tax-Exempt PortfolioTax-exempt (national)2.30%$11.4B$1,000,000
18FFTXXFEDERATED HERMES INSTITUTIONAL TAX-FREE CASH TRUSTTax-exempt (national)2.30%$2.2B$500,000
19WNTXXAllspring National Tax-Free Money Market FundTax-exempt (national)2.29%$103.0M$1,000,000
20NISXXFEDERATED HERMES NEW YORK MUNICIPAL CASH TRUSTTax-exempt (single state)2.28%$705.1M$10,000
21JOFXXJPMorgan Institutional Tax Free Money Market FundTax-exempt (national)2.28%$324.5M$10,000,000
22SNYXXSchwab New York Municipal Money FundTax-exempt (single state)2.27%$2.2B$1,000,000
23TEWXXTax Exempt PortfolioTax-exempt (national)2.27%$584.5M$1,000,000
24VTIXXJPMorgan Tax Free Money Market FundTax-exempt (national)2.27%$407.7M$5,000,000
25JMAXXJPMorgan Municipal Money Market FundTax-exempt (national)2.27%$207.4M$5,000,000

Screen: ticker share classes with at least $100 million in net assets and a reported 7-day net yield on the August 2026 month-end filings (588 of 870 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.

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FAQ

What is the highest-yielding tax exempt money market fund?

As of the August 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 2.46%, reported by MOFXX (FEDERATED HERMES MUNICIPAL OBLIGATIONS FUND).