s eligible to be treated as a edrporaticn that meets ?extern tests afbefit will be electing S I corporation Altana it mast timely fills Form 2553, Zrectical by & Sbaltbseimiss CarPoratiOn. The II.0 will be'treited aff a eat:per:at:Ion :ea of the effective date of the S corporation election and does not need to file Form 8