VMFXX Yield and Fund Details
Vanguard Federal Money Market Fund
- 7-day SEC yield
- 3.83%
- Expense ratio
- 0.11%
Details
- Last checked
- Oct 22, 2026
- Provider date
- Oct 21, 2026
- Last attempt
- Oct 22, 2026
Government money-market fund
Minimum investment: $3,000 reported; account exceptions may apply
Reported net yields already include expenses.
Official VMFXX yield and termsState tax · 2025
U.S. government income: 66.61%. Vanguard 2025 tax report
Meets the California, Connecticut and New York fund thresholds. State rules apply.
What the fund holds
Cash, government securities and government-collateralized repurchase agreements.
Access to your cash
Purchased or redeemed at the fund's daily NAV. Vanguard also offers it as a brokerage settlement fund; minimums depend on that role.
Fund shares are investments, not FDIC- or NCUA-insured deposits. Yield and principal risks differ from a savings account. Product conventions checked September 7, 2026; rate observation dates are shown separately.
Recent yield observations
| Observation date | 7-day SEC yield |
|---|---|
| 2026-10-21 | 3.83% |
| 2026-10-20 | 3.83% |
| 2026-10-19 | 3.83% |
| 2026-10-16 | 3.82% |
| 2026-10-15 | 3.81% |
| 2026-10-14 | 3.81% |
| 2026-10-13 | 3.81% |
| 2026-10-12 | 3.81% |
| 2026-10-09 | 3.81% |
| 2026-10-08 | 3.80% |
| 2026-10-07 | 3.80% |
| 2026-10-06 | 3.80% |
| 2026-10-05 | 3.79% |
| 2026-10-02 | 3.79% |
| 2026-10-01 | 3.79% |
| 2026-09-30 | 3.79% |
| 2026-09-29 | 3.79% |
| 2026-09-28 | 3.78% |
| 2026-09-25 | 3.77% |
| 2026-09-17 | 3.63% |
| 2026-09-13 | 3.63% |
| 2026-09-08 | 3.63% |
| 2026-08-28 | 3.63% |
| 2026-08-27 | 3.62% |
| 2026-08-24 | 3.62% |
| 2026-08-23 | 3.62% |
| 2026-08-22 | 3.61% |
| 2026-08-21 | 3.61% |
| 2026-08-20 | 3.61% |
| 2026-08-19 | 3.61% |
Taxes and comparisons
State exemption depends on the fund's actual annual income allocation and your state's rules. A Treasury-focused name does not establish a 100% exemption. Use the tax-year assumptions in the after-tax comparison.