How to File Business Tax Extension

Filing business tax extensions depends on entity type: C Corporations: Form 7004 extends Form 1120 to 6 months (October 15 for calendar year). Must be filed by original due date (March 15). No payment required but estimated tax should be current. S Corporations: Form 7004 extends Form 1120S to September 15 for calendar year. K-1s must still be issued by March 15 (no extension available). Partnerships: Form 7004 extends Form 1065 to September 15 for calendar year. K-1s must be issued by March 15 (no extension available). LLCs: Follow partnership rules if multi-member, individual rules if single-member. Key Steps: 1. File appropriate extension form by original due date. 2. Estimate and pay any tax owed to avoid penalties. 3. Note that extensions are for filing only, not payment. 4. Ensure estimated payments are current. Important: Extensions don't extend K-1 deadlines for pass-through entities. State extensions may need to be filed separately. Some states require payment with extension to avoid penalties.