To revoke a Subchapter S election/small business election that was made on Form 2553, submit a statement of revocation to the service center where you file your annual return. The statement should state: The corporation revokes the election made under Section 1362(a)
File Articles of Dissolution Submit Articles of Dissolution with your state's Secretary of State office to officially terminate your S-corporation. The requirements and fees vary by state, so consult with your legal advisor to ensure proper handling. Notify the IRS and state tax authorities.
You simply resign. Submit a written statement to the board of directors informing them of your resignation and its effective date. Resigning won't cut off anyone's right to try and sue you for wrongful acts you committed while you were an officer.
The IRS does not offer a standard form for changing your company's tax status from S corporation to C corporation. Instead, it simply requires a written statement be filed with the appropriate IRS service center, along with consent signed by a majority (more than 50%) of your corporation's shareholders.