1 Exhibit 99.1 PROXY INDEPENDENT BANK CORPORATION SPECIAL MEETING OF SHAREHOLDERS AUGUST __, 1999 The undersigned acknowledges receipt of notice of a Special Meeting of Shareholders of Independent Bank Corporation to be held on August ___, 1999, and a Joint Proxy Statement/Prospectus dated July ___, 1999, and hereby appoints William R. Kohls and Charles C. Van Loan, or either of them, attorneys and proxies of the undersigned, each with full power of substitution, to vote all shares of the undersigned in Independent Bank Corporation at the Special Meeting of its Shareholders to be held on August ___, 1999, and at any adjournment thereof: 1. FOR AGAINST ABSTAIN Approval of the Agreement and // // // Plan of Reorganization, dated March 24, 1999, contained and described in the Joint Proxy Statement/Prospectus dated July ___, 1999, and the resulting issuance of shares of IBC common stock. (Your Board of Directors recommends a vote "FOR" this proposal). 2. As said proxies in their discretion may determine upon all other matters that properly may be presented at the meeting. THE SHARES REPRESENTED BY THIS PROXY WILL BE VOTED AS SPECIFIED. IF NO SPECIFICATION IS MADE, THIS PROXY WILL BE VOTED FOR APPROVAL OF THE AGREEMENT AND PLAN OF REORGANIZATION, AND WILL BE VOTED IN ACCORDANCE WITH THE JUDGMENT OF THE PROXIES WITH RESPECT TO ANY OTHER MATTERS WHICH MAY COME BEFORE THE MEETING. Please sign exactly as your name(s) appear(s) below. Joint owners should each sign personally. Executors, administrators, trustees and persons signing for corporations or partnerships should so indicate. Dated: , 1999 ------------------ ------------------------------- ------------------------------- ------------------------------- ------------------------------- Signature of Shareholder(s) THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS OF INDEPENDENT BANK CORPORATION