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			Before you invest, you may want to review the fund’s prospectus, which contains more information about the fund and its risks. You can find the fund’s prospectus, reports to shareholders, and other information about the fund online at the web addresses listed below. You can also get this information at no cost by calling or sending an email request. The fund’s prospectus and other information are also available from financial intermediaries (such as banks and broker-dealers) through which shares of the fund may be purchased or sold.

			Retail Investors americancentury.com/docs 1-800-345-2021 or 816-531-5575 prospectus@americancentury.com			Financial Professionals americancentury.com/fadocs 1-800-345-6488 advisor_prospectus@americancentury.com

			This summary prospectus incorporates by reference the fund’s prospectus and statement of additional information (SAI), each dated August 1, 2023 (as supplemented at the time you receive this summary prospectus), as well as the Report of Independent Registered Public Accounting Firm and the financial statements included in the fund’s annual report to shareholders, dated March 31, 2023. The fund’s SAI and annual report may be obtained, free of charge, in the same manner as the prospectus.

The following table describes the fees and expenses you may pay if you buy, hold and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. More information about sales charges that may apply in certain circumstances where such shares were acquired by exchange from another American Century Investments fund, is available from your financial professional and in Calculation of Sales Charges on page 10 of the fund’s prospectus, Appendix A of the fund’s prospectus and Sales Charges in Appendix B of the statement of additional information.


Shareholder Fees (fees paid directly from your investment)
	Investor	A	C
Maximum Deferred Sales Charge (Load) (as a percentage of the lower of the original offering price or redemption proceeds when redeemed within one year of purchase)	None	None¹	None¹
Maximum Annual Account Maintenance Fee (waived if eligible investments total at least $10,000)	$25	None	None


Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
	Investor	A	C
Management Fee	0.45%	0.45%	0.45%
Distribution and Service (12b-1) Fees	None	0.25%	0.75%
Other Expenses	0.01%	0.01%	0.01%
Total Annual Fund Operating Expenses	0.46%	0.71%	1.21%

The example below is intended to help you compare the costs of investing in the fund with the costs of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that you earn a 5% return each year. The example also assumes that the fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

The fund is a government money market fund, which means it invests at least 99.5% of its total assets in cash, U.S. government securities, and/or repurchase agreements that are collateralized by government securities or cash. Additionally, the fund has a policy to invest at least 80% of its assets in government securities and/or repurchase agreements collateralized by government securities. Government securities include any securities issued or guaranteed as to principal or interest by the United States and its agencies or instrumentalities. The securities purchased by the fund are subject to the maturity, quality, diversification, and other requirements of Rule 2a-7 under the Investment Company Act of 1940, as amended. Thus, the fund invests its assets in high quality, very short term debt securities.

Because this fund is a government money market fund, both retail and institutional shareholders may invest in the fund. This fund does not have the ability to impose a liquidity fee on the sale of shares or temporarily suspend redemptions in response to decreases in liquidity.

Securities issued or guaranteed by the U.S. Treasury and certain U.S. government agencies or instrumentalities such as the Government National Mortgage Association (Ginnie Mae), are supported by the full faith and credit of the U.S. government. Securities issued or guaranteed by other U.S. government agencies or instrumentalities, such as the Federal National Mortgage Association (Fannie Mae), the Federal Home Loan Mortgage Corporation (Freddie Mac), Federal Farm Credit Bank (FFCB), and the Federal Home Loan Bank (FHLB) are not guaranteed by the U.S. Treasury or supported by the full faith and credit of the U.S. government. However, they are authorized to borrow from the U.S. Treasury to meet their obligations.

Because short-term, U.S. government securities are among the safest securities available, the interest they pay is among the lowest for income-paying securities. Accordingly, the yield on this fund will likely be lower than the yield on funds that invest in longer-term or lower-quality securities.

•Liquidity Risk – Changing regulatory or market conditions, including increases in interest rates or credit spreads, may adversely affect the liquidity of the fund’s investments. During periods of market turbulence or unusually low trading activity, to meet redemptions, it may be necessary for the fund to sell securities at prices that could have an adverse effect on the fund’s share price.

•Redemption Risk – The fund may need to sell securities at times it would not otherwise do so to meet shareholder redemption requests. Selling securities to meet such redemptions may cause the fund to experience a loss, increase the fund’s transaction costs or have tax consequences. To the extent that a large shareholder (including a fund of funds or 529 college savings plan) invests in the fund, the fund may experience relatively large redemptions as such shareholder reallocates its assets.

•Repurchase Agreement Risk – If the seller in a repurchase agreement transaction defaults on its obligation to repurchase a security at a mutually agreed-upon time and price under the agreement, the fund may suffer delays and incur costs or lose money in exercising its rights under the agreement.

You could lose money by investing in the fund. Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The fund’s sponsor has no legal obligation to provide financial support to the fund, and you should not expect that the sponsor will provide financial support to the fund at any time.

The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the fund’s performance from year to year for Investor Class shares. The fund’s past performance is not necessarily an indication of how the fund will perform in the future. On December 1, 2015, the fund changed its investment objective and strategy so that it would qualify as a government money market fund, as that term is defined in Rule 2a-7 of the Investment Company Act. Performance for periods before December 1, 2015 is based on the fund’s prior investment strategy. For current performance information, including yields, please visit americancentury.com.


Average Annual Total Returns For the calendar year ended December 31, 2022	1 year	5 years	10 years	Since Inception	Inception Date
Investor Class	1.26%	0.95%	0.52%	—	04/01/1993
A Class	1.09%	0.80%	—	0.62%	12/01/2015
C Class	0.81%	0.52%	—	0.41%	12/01/2015

You may purchase or redeem shares of the fund on any business day through our website at americancentury.com, in person (at one of our Investor Centers), by mail (American Century Investments, P.O. Box 419200, Kansas City, MO 64141-6200), by telephone at 1-800-345-2021 (Investor Services Representative) or 1-800-345-3533 (Business, Not-For-Profit and Employer-Sponsored Retirement Plans), or through a financial intermediary. Shares may be purchased and redemption proceeds received by electronic bank transfer, by check or by wire.

Unless otherwise specified below, the minimum initial investment amount to open an account is $2,500 ($2,000 for Coverdell Education Savings Accounts and IRAs). However, American Century Investments will waive the fund minimum if you make an initial investment of at least $500 and continue to make automatic investments of at least $100 a month until reaching the fund minimum. Investors opening accounts through financial intermediaries may open an account with $250, but the financial intermediaries may require their clients to meet different investment minimums. Broker-dealer sponsored wrap program accounts, fee based accounts, and employer-sponsored retirement plan accounts do not have a minimum purchase amount.

Fund distributions are generally taxable as ordinary income or capital gains, unless you are investing through a tax-deferred account such as a 401(k) or individual retirement account (in which case you may be taxed upon withdrawal of your investment from such account).

If you purchase the fund through a broker-dealer or other financial intermediary (such as a bank, insurance company, plan sponsor or financial professional), the fund and its related companies may pay the intermediary for the sale of fund shares and related services for investments. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.


Summary Prospectus August 1, 2023 American Century Investments® U.S. Government Money Market Fund
Investor Class: TCRXX	A Class: AGQXX	C Class: AGHXX


	1 year	3 years	5 years	10 years
Investor Class	$47	$148	$258	$580
A Class	$73	$227	$396	$883
C Class	$124	$385	$666	$1,327