Seeks safety of principal and high current income that is exempt from federal income tax.
Data reflects past performance for Investor Class shares, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value fluctuates. Redemption value may be more or less than original cost. Obtain performance data current to the most recent month end. For additional share class information, consult the prospectus. Extraordinary performance is attributable in part to unusually favorable market conditions and may not be repeated or consistently achieved in the future.
Expense ratios provided are the funds' total annual operating expense ratios, gross of any fee waivers or expense reimbursements. Expense ratios are as of the funds' most current prospectus.
Returns or yields for the fund would have been lower if a portion of the management fee had not been waived. Review the annual or semiannual report for the most current information.
Weekly Liquidity: The percentage of the fund's assets invested in daily liquid assets, government agency discount notes with remaining maturities of 60 days or less, securities that will mature or are subject to a demand feature that is exercisable and payable within five business days, and receivables scheduled to be paid within five business days.
Market Based NAV (Net Asset Value): The market based price of the fund's portfolio, also known as a "shadow NAV."
Calendar Year Returns
An investment in the fund is neither insured nor guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Although the fund seeks to preserve the value of your investment at $1 per share, it is possible to lose money by investing in the fund.Fund shares are not guaranteed by the U.S. Government. Because the fund invests primarily in municipal securities, it will be sensitive to events that affect municipal markets. Investment returns are exempt from Federal taxes.
W2 If your account falls below the minimum balance, you will be notified and given 90 days to meet the minimum. If the deadline is not met, American Century Investments may redeem the shares in the account and send the proceeds to the address of record.
For detailed descriptions of indices or investing terms referenced above, refer to our glossary.