AMENDMENT NO. 17 TO AMENDED AND RESTATED AGREEMENT AND DECLARATION OF TRUST OF AMERICAN CENTURY INVESTMENT TRUST





AMENDMENT NO. 17 TO

THIS AMENDMENT NO. 17 TO AMENDED AND RESTATED AGREEMENT AND DECLARATION OF TRUST is hereby adopted as of the 24th day of March, 2017, by the undersigned Trustees.

WHEREAS, the Board of Trustees of American Century Investment Trust (the “Trust”) have determined that it is in the best interests of the Trust to establish a new series of shares designated NT High Income Fund, and

WHEREAS, pursuant to Article VIII, Section 8 of the Declaration of Trust, the Trustees wish to amend the Declaration of Trust to reflect the establishment of the new series of shares.

NOW, THEREFORE, BE IT RESOLVED, that the establishment of the new series of shares designated NT High Income Fund is hereby approved, effective as of May 19, 2017; and

FURTHER RESOLVED, that Schedule A of the Amended and Restated Agreement and Declaration of Trust for the Trust is hereby amended to reflect the establishment of the new series of shares by deleting the text thereof in its entirety and inserting in lieu therefore the Schedule A attached hereto.

This Amendment may be executed in counterparts, each of which shall be deemed an original, but all of which shall constitute one and the same instrument.










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IN WITNESS WHEREOF, the Trustees do hereto set their hands as of the date first referenced above.




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2


SCHEDULE A


Pursuant to Article III, Section 6, the Trustees hereby establish and designate the following Series as Series of the Trust (and the Classes thereof) with the relative rights and preferences as described in Section 6:

Series                         Class        Date of Establishment
Prime Money Market Fund                Investor        06/13/1993
A Class            06/01/1998
C Class            05/01/2001

Diversified Bond Fund                    Investor        08/01/2001
I Class            08/01/2001*
A Class            08/01/2001
C Class            05/08/2002
R Class            06/30/2005
R6 Class        06/28/2013
R5 Class        04/10/2017
T Class            04/10/2017
Y Class            04/10/2017

U.S. Government Money Market Fund            Investor        08/01/2001
A Class            06/16/2015
C Class            06/16/2015

High-Yield Fund                    Investor        05/08/2002
R5 Class        06/14/2004**
A Class            05/08/2002
C Class            05/08/2002
R Class            06/30/2005
R6 Class        06/28/2013
I Class            04/10/2017
Y Class            04/10/2017

Short Duration Inflation Protection Bond Fund        Investor        05/01/2005
R5 Class        05/01/2005**
A Class            05/01/2005
C Class            05/01/2005
R Class            05/01/2005
R6 Class        06/28/2013
I Class            04/10/2017
Y Class            04/10/2017

NT Diversified Bond Fund                Institutional        05/01/2006
R6 Class        06/28/2013

Core Plus Fund                        Investor        11/29/2006
R5 Class        11/29/2006**
A Class            11/29/2006
C Class            11/29/2006
R Class            11/29/2006
I Class            04/10/2017


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Short Duration Fund                    Investor        11/29/2006
R5 Class        11/29/2006**
A Class            11/29/2006
C Class            11/29/2006
R Class            11/29/2006
I Class            04/10/2017

Strategic Income Fund                    Investor        03/11/2014
R5 Class        03/11/2014**
A Class            03/11/2014
C Class            03/11/2014
R Class            03/11/2014
R6 Class        03/11/2014
I Class            04/10/2017
Y Class            04/10/2017

Short Duration Strategic Income Fund            Investor        03/11/2014
R5 Class        03/11/2014**
A Class            03/11/2014
C Class            03/11/2014
R Class            03/11/2014
R6 Class        03/11/2014
I Class            04/10/2017
Y Class            04/10/2017

Floating Rate Income Fund                Investor        03/11/2014
Institutional        03/11/2014
A Class            03/11/2014
C Class            03/11/2014
R Class            03/11/2014
R6 Class        03/11/2014

NT High Income Fund                    Investor        05/19/2017
Institutional        05/19/2017
R6            05/19/2017


This Schedule A shall supersede any previously adopted Schedule A to the Declaration of Trust.

*    Formerly Institutional Class; name changed to I Class on 4/10/2017.
**    Formerly Institutional Class; name changed to R5 Class on 4/10/2017.














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Filed: April 7th, 2017