List all IRS tax forms and schedules for 2026 with their exact form numbers, purposes, filing requirements, and deadlines. Group them by individual, business, and estate/trust categories. Include form numbers, line counts, and who must file each one.

For 2026, the IRS tax forms and schedules are extensive. Here's a condensed list, grouped by category:

**Individual:**

- Form 1040 (79 lines): Personal income tax return, filed by most individuals. Deadline: April 15, 2026.

- Schedule A (23 lines): Itemized deductions, filed with Form 1040 if itemizing.

- Schedule C (37 lines): Business income and expenses for self-employment, filed with Form 1040.

**Business:**

- Form 1120 (20 pages): Corporate income tax return, filed by C-corporations. Deadline: April 15, 2026, or October 15 with extension.

- Form 1065 (24 pages): Partnership return, filed by partnerships. Deadline: March 15, 2026, or September 15 with extension.

**Estate/Trust:**

- Form 1041 (23 pages): Estate or trust income tax return, filed by estates and trusts. Deadline: April 15, 2026, or October 15 with extension.

Try our Tax Forms Guide at taxorly.com/tax-forms to navigate these requirements.

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