When is the S-Corp election deadline? You must file no more than 2 months and 15 days after your tax year begins—or any time during the prior tax year—to have the election effective for the upcoming year. admin_ebd22025-06-11T15:07:51-07:00S Corp| Share This Story, Choose Your Platform! FacebookXRedditLinkedInWhatsAppTelegramTumblrPinterestVkXingEmail