497

California Tax-Free Money Market Fund

(the "Fund")

August 18, 2017

EXPLANATORY NOTE

On behalf of the Fund, a series of American Century California Tax-Free and Municipal Funds (the “Corporation”), and pursuant to Rule 497(e) under the Securities Act of 1933, as amended (the “Securities Act”), the purpose of this filing is to submit an interactive data file in the manner provided by Rule 405 of Regulation S-T and General Instruction C.3.(g) of Form N-1A. The interactive data file included as an exhibit to this filing relates to the prospectus supplement filed with the Securities and Exchange Commission on behalf of the Corporation pursuant to Rule 497(e) under the Securities Act on July 28, 2017; such filing (Accession Number 0001293210-17-000250) is incorporated by reference into this Rule 497 Document.

EXHIBIT INDEX

EXHIBIT NUMBER	DESCRIPTION OF DOCUMENT
Exhibit - 101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
Exhibit - 101.INS	XBRL Instance Document
Exhibit - 101.SCH	XBRL Taxonomy Extension Schema Document
Exhibit - 101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
Exhibit - 101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
Exhibit - 101.LAB	XBRL Taxonomy Extension Label Linkbase Document

XML

Jul. 31, 2017

AMERICAN CENTURY CALIFORNIA TAX FREE & MUNICIPAL FUNDS

Summary Prospectus and Prospectus Supplement

Supplement dated July 31, 2017

Tax-Free Money Market Fund

(Summary Prospectus and Prospectus dated October 1, 2016)

Utilities Fund

(Summary Prospectus and Prospectus dated November 1, 2016)

Zero Coupon 2020 Fund n Zero Coupon 2025 Fund

(Summary Prospectuses and Prospectus dated February 1, 2017)

One Choice^® Portfolio: Very Aggressive n One Choice^® Portfolio: Aggressive

One Choice^® Portfolio: Moderate n One Choice^® Portfolio: Conservative

One Choice^® Portfolio: Very Conservative n Adaptive All Cap Fund n Focused Dynamic Growth Fund

(Summary Prospectuses and Prospectuses dated December 1, 2016)

California Tax-Free Money Market Fund

(Summary Prospectus and Prospectus dated January 1, 2017)

Balanced Fund

(Summary Prospectus and Prospectus dated April 10, 2017)

The following is added as the third sentence in the Example section of the summary prospectuses and the prospectuses. Both classes may not be available for all funds.

You may be required to pay brokerage commissions on your purchases of Investor or I Class shares of the fund, which are not reflected in the example. 

The following language is added as the last paragraph under the Buying and Selling Shares Through a Financial Intermediary section of the prospectuses. Both classes may not be available for all funds.

Investor and I Class shares may also be available on brokerage platforms of financial intermediaries that have agreements with American Century Investments to offer such shares solely when acting as an agent for the shareholder.  A shareholder transacting in Investor or I Class shares in these programs may be required to pay a commission and/or other forms of compensation to the broker.  Shares of the fund may be available in other share classes that have different fees and expenses. 

The following sub-section is added in the Additional Policies Affecting Your Investment section after the sub-section Redemption of Shares in Accounts Below Minimum in the prospectuses.

Small Distributions and Uncashed Distribution Checks

Generally, dividends and distributions cannot be paid by check for an amount less than $50. Any such amount will be automatically reinvested in additional shares. The fund reserves the right to reinvest any dividend or distribution amount you elect to receive by check if your check is returned as undeliverable or if you do not cash your check within six months. Interest will not accrue on the amount of your uncashed check. We will reinvest your check into your account at the NAV on the day of reinvestment. When reinvested, those amounts are subject to the risk of loss like any other fund investment. We also reserve the right to change your election to receive dividends and distributions in cash after a check is returned undeliverable or uncashed for the six month period, and we may automatically reinvest all future dividends and distributions at the NAV on the date of the payment.

©2017 American Century Proprietary Holdings, Inc. All rights reserved.

CL-SPL-93029 1707

XML

Label

Element

Value

Prospectus:

rr_ProspectusTable

Document Type

dei_DocumentType

497

Document Period End Date

dei_DocumentPeriodEndDate

Jul. 28, 2017

Entity Registrant Name

dei_EntityRegistrantName

AMERICAN CENTURY CALIFORNIA TAX FREE & MUNICIPAL FUNDS

Central Index Key

dei_EntityCentralIndexKey

0000717316

Amendment Flag

dei_AmendmentFlag

false

Document Creation Date

dei_DocumentCreationDate

Jul. 28, 2017

Document Effective Date

dei_DocumentEffectiveDate

Jan. 01, 2017

Prospectus Date

rr_ProspectusDate

Jan. 01, 2017

AMERICAN CENTURY CALIFORNIA TAX FREE & MUNICIPAL FUNDS

Prospectus:

rr_ProspectusTable

Supplement [Text Block]

ck0000717316_SupplementTextBlock

Summary Prospectus and Prospectus Supplement

Supplement dated July 31, 2017

Tax-Free Money Market Fund

(Summary Prospectus and Prospectus dated October 1, 2016)

Utilities Fund

(Summary Prospectus and Prospectus dated November 1, 2016)

Zero Coupon 2020 Fund n Zero Coupon 2025 Fund

(Summary Prospectuses and Prospectus dated February 1, 2017)

One Choice^® Portfolio: Very Aggressive n One Choice^® Portfolio: Aggressive

One Choice^® Portfolio: Moderate n One Choice^® Portfolio: Conservative

One Choice^® Portfolio: Very Conservative n Adaptive All Cap Fund n Focused Dynamic Growth Fund

(Summary Prospectuses and Prospectuses dated December 1, 2016)

California Tax-Free Money Market Fund

(Summary Prospectus and Prospectus dated January 1, 2017)

Balanced Fund

(Summary Prospectus and Prospectus dated April 10, 2017)

The following is added as the third sentence in the Example section of the summary prospectuses and the prospectuses. Both classes may not be available for all funds.

You may be required to pay brokerage commissions on your purchases of Investor or I Class shares of the fund, which are not reflected in the example. 

The following language is added as the last paragraph under the Buying and Selling Shares Through a Financial Intermediary section of the prospectuses. Both classes may not be available for all funds.

Investor and I Class shares may also be available on brokerage platforms of financial intermediaries that have agreements with American Century Investments to offer such shares solely when acting as an agent for the shareholder.  A shareholder transacting in Investor or I Class shares in these programs may be required to pay a commission and/or other forms of compensation to the broker.  Shares of the fund may be available in other share classes that have different fees and expenses. 

The following sub-section is added in the Additional Policies Affecting Your Investment section after the sub-section Redemption of Shares in Accounts Below Minimum in the prospectuses.

Small Distributions and Uncashed Distribution Checks

Generally, dividends and distributions cannot be paid by check for an amount less than $50. Any such amount will be automatically reinvested in additional shares. The fund reserves the right to reinvest any dividend or distribution amount you elect to receive by check if your check is returned as undeliverable or if you do not cash your check within six months. Interest will not accrue on the amount of your uncashed check. We will reinvest your check into your account at the NAV on the day of reinvestment. When reinvested, those amounts are subject to the risk of loss like any other fund investment. We also reserve the right to change your election to receive dividends and distributions in cash after a check is returned undeliverable or uncashed for the six month period, and we may automatically reinvest all future dividends and distributions at the NAV on the date of the payment.

©2017 American Century Proprietary Holdings, Inc. All rights reserved.

CL-SPL-93029 1707