Tax Extension Deadline 2024 For S Corporation. Partnership and s corp tax. If you’re a calendar year filer, april 15, 2024, is also the deadline to file your c corporation’s federal tax return for 2023 or to file for an extension to file your corporate tax return.

If you’re a calendar year filer, april 15, 2024, is also the deadline to file your c corporation’s federal tax return for 2023 or to file for an extension to file your corporate tax return. Tax return deadline for s corporations.