Realize Your Potential: H\&R Block sing. for follow up Luestion 72 of 75. An S corporation's tax years for 2020-2022 end on 12/25/2020, 12/31/2021, and 12/30/2022. What type of tax year does this S Corporation use? 52-53-week tax year. Calendar tax year. Ownership tax year. Tax year elected under IRC Section 444 Mark for follow up