Form 1040 is the U.S. Individual Income Tax Return — the primary annual return every taxpayer files. It's the central document where all your income sources, deductions, credits, and payments come together to produce a final refund or balance due.
For tipped and gig workers, the 1040 is the consolidation point:
- Line 1a: W-2 wages and reported tips (from your W-2 Box 1)
- Line 8: other income, including Schedule 1 (which includes Schedule C net profit)
- Line 10: adjustments to income — includes half-SE-tax deduction
- Line 12: standard deduction or itemized deductions
- Line 23: other taxes — includes self-employment tax from Schedule SE
- Line 25a: federal income tax withheld from W-2s
- Line 26: estimated tax payments made during the year
- Line 34/37: refund or amount you owe
Schedules that commonly attach to the 1040 for tipped/gig workers:
- Schedule 1: additional income and adjustments (carries Schedule C income, half-SE-tax deduction)
- Schedule 2: additional taxes (carries SE tax, additional Medicare tax)
- Schedule C: profit or loss from business
- Schedule SE: self-employment tax
- Form 4137: unreported tip income (rare but possible)
Filing deadline: April 15 of the year after the tax year (April 17 in 2026 due to weekend/holiday observance). Six-month extensions available via Form 4868 — extension to file, not extension to pay.