File No. 333-191495

File No. 811-22895

U.S. 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. 53
and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940	[X]
AMENDMENT NO. 54

Capitol Series Trust

(Exact Name of Registrant as Specified in Charter)

225 Pictoria Drive, Suite 450, Cincinnati, Ohio 45246

(Address of Principal Executive Offices, Zip Code)

513-587-3400

(Registrant’s Telephone Number, including Area Code)

Dina A. Tantra

President and Chief Executive Officer

Capitol Series Trust

225 Pictoria Drive, Suite 450, Cincinnati, Ohio 45246

(Name and Address of Agent for Service)

Copy to:

Caleb C.B. DuBois

Bernstein, Shur, Sawyer & Nelson, P.A.

100 Middle Street

P.O. Box 9729

Portland, Maine 04104-5029

It is proposed that this filing will become effective:

X immediately upon filing pursuant to paragraph (b)

on ______________ pursuant to paragraph (b)

60 days after filing pursuant to paragraph (a)(i)

on pursuant to paragraph (a)(i)

75 days after filing pursuant to paragraph (a)(ii)

on pursuant to paragraph (a)(ii) of Rule 485

If appropriate, check the following box:

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

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 Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Cincinnati, Ohio on the 12^th day of September, 2018.

Capitol Series Trust

(Registrant)

/s/ Matthew J. Miller

Matthew J. Miller

Vice President and Secretary

Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed below by the following persons in the capacities and on the 12^th day of September, 2018:

Signature	Title
*	Trustee and Chair
Walter B. Grimm
*	Trustee
Mary Madick Morrow
*	Trustee
Robert G. Dorsey
*	Trustee
Lori Kaiser
*	Trustee
Janet S. Meeks
*	Trustee
John C. Davis
/s/ Dina A. Tantra	President and Chief Executive Officer
Dina A. Tantra
/s/ Zachary P. Richmond	Treasurer and Chief Financial Officer
Zachary P. Richmond

/s/ Tiffany R. Franklin

* By: Tiffany R. Franklin

Power of Attorney

EXHIBIT INDEX

Exhibit Number	Description
EX-101.ins	XBRL Instance Document
EX-101.sch	XBRL Taxonomy Extension Schema Document
EX-101.cal	XBRL Taxonomy Extension Calculation Linkbase Document
EX-101.lab	XBRL Taxonomy Extension Labels Linkbase
EX-101.pre	XBRL Taxonomy Extension Presentation Linkbase Document
EX-101.def	XBRL Taxonomy Extension Definition Linkbase