As filed with the U.S. Securities and Exchange Commission on April 16, 2014

File No.333-170422

811-22492

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933		[X]
Pre-Effective Amendment No.		[   ]
Post-Effective Amendment No.	8	[X]

and/or

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940		[X]
Amendment No.	11	[X]

(Check appropriate box or boxes)

MainGate Trust

(Exact name of Registrant as Specified in Charter)

6075 Poplar Ave.

Memphis, TN 38119

(Address of Principal Executive Offices)

 (Registrant's Telephone Number, including Area Code) - (901) 537-1866

Geoffrey P. Mavar

MainGate Trust

6075 Poplar Ave.

Memphis, TN 38119

(Name and address of agent for Service)

With copies to:

Dee Anne Sjögren

Thompson Coburn LLP

One US Bank Plaza

St. Louis, Missouri 63101

(314) 552-6295

It is proposed that this filing will become effective (check appropriate box)

[X ]	Immediately upon filing pursuant to Rule 485(b).
[   ]	on (date) pursuant to Rule 485(b).
[   ]	on (date) pursuant to Rule 485(a)(1).
[   ]	60 days after filing pursuant to Rule 485 (a)(1).
[   ]	75 days after filing pursuant to Rule 485 (a)(2).
[   ]	on (date) pursuant to Rule 485(a)(2).

If appropriate, check the following box:

[   ] This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

This Post-Effective Amendment (“PEA”) No. 8 to the Registration Statement of MainGate Trust (the “Trust”) on Form N-1A hereby incorporates Parts A, B and C from the Company’s PEA No. 7 on Form N-1A filed March 26, 2014.  This PEA No. 8 is filed for the sole purpose of submitting the XBRL exhibit for the risk/return summary first provided in PEA No. 7 to the Trust’s Registration Statement.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant has duly caused this Post-Effective Amendment No. 8 to its Registration Statement to be signed below on its behalf by the undersigned, thereunto duly authorized, in the City of Memphis and State of Tennessee on the 16th day of April, 2014.

MainGate Trust

By: /s/ Matthew G. Mead                                             

Matthew G. Mead

President

Pursuant to the requirements of the Securities Act, this registration statement has been signed below by the following persons in the capacities and on the dates indicated.

Signature	Title	Date
/s/ Matthew G. Mead	Trustee and President	April 16, 2014
Matthew G. Mead
/s/ Geoffrey P. Mavar	Trustee and Chief Financial Officer	April 16, 2014
Geoffrey P. Mavar
/s/ Robert A. Reed*                                                                             Robert A. Reed	Trustee	April 16, 2014
/s/ Darrison N. Wharton*                                                                       Darrison N. Wharton	Trustee	April 16, 2014
/s/ David C. Burns*                                                                             David C. Burns	Trustee	April 16, 2014
/s/ Marshall K.Gramm*                                                                       Marshall K.Gramm	Trustee	April 16, 2014
/s/ Barry Samuels*                                                                                   Barry Samuels	Trustee	April 16, 2014
/s/ Moss W. Davis*                                                                              Moss W. Davis	Trustee	April 16, 2014

By: /s/ Geoffrey P. Mavar                                                                               

Attorney-in-fact

*Geoffrey P. Mavarsigns this document on behalf of each of the foregoing persons pursuant to the Powers of Attorney.

EXHIBIT INDEX

Exhibit	Exhibit No.
Instance Document	EX-101.INS
Schema Document	EX-101.SCH
Calculation Linkbase Document	EX-101.CAL
Definition Linkbase Document	EX-101.DEF
Label Linkbase Document	EX-101.LAB
Presentation Linkbase Document	EX-101.PRE

2