IRS FORM 8832 : An entity that elects to be classified as a corporation by filing Form 8832 can make another election to change its classification (see the 60-month limitation.

IRS Form 8832 is used by eligible business entities (mainly LLCs) to elect or change their federal tax classification—choosing to be taxed as a corporation, partnership, or disregarded entity.
 
It allows businesses to override default IRS tax statuses, with the election generally effective 75 days before or 12 months after filing.
 
Key Details About Form 8832:
 
Purpose: To choose whether a business is taxed as a C corporation, partnership, or disregarded entity (sole proprietorship).Who Files: Primarily Limited Liability Companies (LLCs) or foreign entities that want to change their default tax classification.
 
Default Status: If no form is filed, the IRS defaults single-member LLCs to "disregarded entities" (taxed on personal returns) and multi-member LLCs to partnerships.
 
Deadline: Generally, the form must be filed within 75 days of the desired effective date.
 
60-Month Rule: Once a change is made, companies generally cannot change their classification again for 60 months (5 years).
 
Late Relief: If filed after 75 days, "late election relief" may be requested if specific criteria are met.