Report of Independent Registered Public
Accounting Firm

To the Board of Trustees and Holders of
Beneficial Interest of Government Cash
Management Portfolio:

In planning and performing our audit of the
financial statements of Government Cash
Management Portfolio (the "Fund"), as of and
for the year ended December 31, 2019, in
accordance with the standards of the Public
Company Accounting Oversight Board (United
States), we considered the Fund's internal
control over financial reporting, including
controls over safeguarding securities, as a basis
for designing our auditing procedures for the
purpose of expressing our opinion on the
financial statements and to comply with the
requirements of Form N-CEN, but not for the
purpose of expressing an opinion on the
effectiveness of the Fund's internal control over
financial reporting. Accordingly, we express no
such opinion.

The management of the Fund is responsible for
establishing and maintaining effective internal
control over financial reporting. In fulfilling this
responsibility, estimates and judgments by
management are required to assess the expected
benefits and related costs of controls. A
company's internal control over financial
reporting is a process designed to provide
reasonable assurance regarding the reliability of
financial reporting and the preparation of
financial statements for external purposes in
accordance with U.S. generally accepted
accounting principles. A company's internal
control over financial reporting includes those
policies and procedures that (1) pertain to the
maintenance of records that, in reasonable detail,
accurately and fairly reflect the transactions and
dispositions of the assets of the company; (2)
provide reasonable assurance that transactions
are recorded as necessary to permit preparation
of financial statements in accordance with U.S.
generally accepted accounting principles, and
that receipts and expenditures of the company
are being made only in accordance with
authorizations of management and directors of
the company; and (3) provide reasonable
assurance regarding prevention or timely
detection of unauthorized acquisition, use or
disposition of a company's assets that could
have a material effect on the financial
statements.

Because of its inherent limitations, internal
control over financial reporting may not prevent
or detect misstatements. Also, projections of any
evaluation of effectiveness to future periods are
subject to the risk that controls may become
inadequate because of changes in conditions, or
that the degree of compliance with the policies
or procedures may deteriorate.

A deficiency in internal control over financial
reporting exists when the design or operation of
a control does not allow management or
employees, in the normal course of performing
their assigned functions, to prevent or detect
misstatements on a timely basis. A material
weakness is a deficiency, or a combination of
deficiencies, in internal control over financial
reporting, such that there is a reasonable
possibility that a material misstatement of the
company's annual or interim financial
statements will not be prevented or detected on a
timely basis.

Our consideration of the Fund's internal control
over financial reporting was for the limited
purpose described in the first paragraph and
would not necessarily disclose all deficiencies in
internal control that might be material
weaknesses under standards established by the
Public Company Accounting Oversight Board
(United States). However, we noted no
deficiencies in the Fund's internal control over
financial reporting and its operation, including
controls over safeguarding securities, that we
consider to be a material weakness as defined
above as of December 31, 2019.

This report is intended solely for the information
and use of management and the Board of
Trustees of Government Cash Management
Portfolio and the Securities and Exchange
Commission and is not intended to be and
should not be used by anyone other than these
specified parties.



/s/ ERNST & YOUNG, LLP

Boston, Massachusetts

February 26, 2020