A corporation or other entity eligible to be treated as a corporation files this form to make an election under section 1362(a) to be an S corporation. A late election is when a business entity files Form 2553 after the deadline has passed.The deadline for filing Form 2553 is typically within 75 days. You must file Form 2553 within two months and 15 days of the beginning of the tax year that you want your S corp tax treatment to start. Looking to change your business to an S Corp? Learn about Form 2553 and how to file it to make an S Corp election with Block Advisors. Filing of this form, visit. If you are an LLC that has filed a. Form 8832 or a Form 2553 to be taxed as a corporation, enter "C" for. Kings (Brooklyn). Foodtown.