Business Tax Return Extension Deadline 2024 Extension Deadline. Your corporation can get an extra six months to file form 1120 by requesting a business tax filing extension using form 7004 (seven months for corporations with tax years ending june 30). The irs offers installment plans.

October 15, 2024 is the extended filing deadline for individual tax returns, sole proprietorships, and c corporations. Business tax deadlines 2024 for corporations and llcs.