C Corp Tax Deadline 2024 Date. For “regular” corporations (i.e., c corporations) that operate on a calendar year, their federal income tax return (form 1120) for the 2023 tax year is due on april. Generally, most individuals are calendar year filers.

The 2024 deadline to file individual income tax returns for 2023 is april 15, 2024. Block advisors experts explain c corp tax rates, double taxation, deadlines, forms and more.