As filed with the Securities and Exchange Commission on June 28, 2005
                         Registration No. 333-121356
 =========================================================================

                  U.S. SECURITIES AND EXCHANGE COMMISSION
                         Washington, D.C. 20549

                     POST-EFFECTIVE AMENDMENT NO. 1
                                   TO
                    FORM SB-2 REGISTRATION STATEMENT
                    UNDER THE SECURITIES ACT OF 1933


                     ARCH MANAGEMENT SERVICES INC.
           ----------------------------------------------------
          (Exact name of registrant as specified in its charter)


  Nevada                          7900                     84-1665042
(State or jurisdiction  (Primary Standard Industrial      (I.R.S. Employer
 of incorporation       Classification Code Number)     Identification No.)
 or organization)

                    	     4-2341 West Broadway
                      Vancouver, British Columbia
                           V6K 2E6   Canada
                            (604) 603-5693
             -----------------------------------------------
      (Address and telephone number of principal executive offices)

          		   Kenneth H. Finkelstein
			   2200-1420 Fifth Avenue
                        Seattle, Washington  98101
                               (206) 310-1344
            -------------------------------------------------
        (Name, address and telephone number of agent for service)

Approximate date of commencement of proposed sale to the public: Not
Applicable.

If the securities being registered on this Form are being offered in
connection with the formation of a holding company and there is compliance
with General Instruction G, check the following box. |_|

If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. |_|

If this Form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities
Act registration statement number of the earlier effective registration
statement for the same offering. |x|

                        DEREGISTRATION OF SECURITIES

     Arch Management Services Inc., originally registered a best efforts,
no minimum, 2,000,000 common shares ("Shares") maximum offering at a price of
$0.10 per share. The Shares were registered for sale to the public on a
Registration Statement on Form SB-2 (File No. 333-121356) (the "Registration
Statement"). Arch Management Services Inc. has sold 1,023,250 of the Shares
registered under the Registration Statement. The offering was terminated on
May 6, 2005.  Accordingly, we hereby amend the Registration Statement to
withdraw from registration the 976,750 Shares that remain unsold under the
Registration Statement.


                                SIGNATURES

       Pursuant to the requirements of the Securities Act of 1933, as
amended, the Registrant certifies that it has reasonable grounds to believe
that it meets all of the requirements for filing on Form SB-2 and has duly
caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Vancouver,
British Columbia, on June 28, 2005.


                                     ARCH MANAGEMENT SERVICES INC.



                                     By: /s/ Nigel Johnson
                                         --------------------------------
                                             Nigel Johnson
                                        President, Chief Executive Officer,
					Chief Financial Officer, Principal
				        Accounting Officer, Treasurer, a member
                                        of the Board of Directors



	Pursuant to the requirements of the Securities Act of 1933
this registration statement has been signed by the following persons
in the capacities and on the dates indicated.



/s/ Nigel Johnson
- -------------------     President, Chief Executive		June 28, 2005
Nigel Johnson		Officer, Chief Financial Officer,
			Principal Accounting Officer,
			Treasurer, a member of the Board
                        of Directors



/s/ Alfred Nutt         Secretary,              		June 28, 2005
- -------------------     a member of the Board of
Alfred Nutt	        Directors