<SEC-DOCUMENT>0000844779-16-000228.txt : 20160928
<SEC-HEADER>0000844779-16-000228.hdr.sgml : 20160928
<ACCEPTANCE-DATETIME>20160928103459
ACCESSION NUMBER:		0000844779-16-000228
CONFORMED SUBMISSION TYPE:	NSAR-B
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20160731
FILED AS OF DATE:		20160928
DATE AS OF CHANGE:		20160928
EFFECTIVENESS DATE:		20160928

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BlackRock Taxable Municipal Bond Trust
		CENTRAL INDEX KEY:			0001493683
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0731

	FILING VALUES:
		FORM TYPE:		NSAR-B
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-22426
		FILM NUMBER:		161905960

	BUSINESS ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809
		BUSINESS PHONE:		800-441-7762

	MAIL ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BlackRock Build America Bond Trust
		DATE OF NAME CHANGE:	20100608
</SEC-HEADER>
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SIGNATURE   NEAL J. ANDREWS
TITLE       CFO

</TEXT>
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<DOCUMENT>
<TYPE>EX-99.77B ACCT LTTR
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<PAGE>

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

TO THE SHAREHOLDERS AND BOARD OF TRUSTEES OF BLACKROCK TAXABLE MUNICIPAL BOND
TRUST (FORMERLY KNOWN AS BLACKROCK BUILD AMERICA BOND TRUST):

In planning and performing our audit of the financial statements of BlackRock
Taxable Municipal Bond Trust (formerly known as BlackRock Build America Bond
Trust) (the "Trust") as of and for the year ended July 31, 2016, in accordance
with the standards of the Public Company Accounting Oversight Board (United
States), we considered the Trust'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-SAR, but not for the
purpose of expressing an opinion on the effectiveness of the Trust's internal
control over financial reporting. Accordingly, we express no such opinion.

The management of the Trust 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 Trust'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 generally
accepted accounting principles. A Trust'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 Trust; (2)
provide reasonable assurance that transactions are recorded as necessary to
permit preparation of financial statements in accordance with generally
accepted accounting principles, and that receipts and expenditures of the Trust
are being made only in accordance with authorizations of management and
trustees of the Trust; and (3) provide reasonable assurance regarding
prevention or timely detection of unauthorized acquisition, use, or disposition
of a Trust'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
Trust's annual or interim financial statements will not be prevented or
detected on a timely basis.

Our consideration of the Trust'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 Trust's internal control over financial reporting and its operation,
including controls for safeguarding securities, that we consider to be a
material weakness, as defined above, as of July 31, 2016.

This report is intended solely for the information and use of management and
the Board of Trustees of BlackRock Taxable Municipal Bond Trust, 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/ Deloitte & Touche LLP
Boston, Massachusetts
September 26, 2016
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
