Tax treatment
Seasonal workers are W-2. Federal income tax, FICA, state and local tax all apply normally. The big difference is annual income may be far below typical, which changes effective tax rate.
Withholding considerations
If seasonal work is your only income for the year, the employer's withholding may exceed your actual tax liability. You file and get a refund. If it is a side job on top of full-time work, use Step 2 of the W-4 (multiple jobs) to avoid under-withholding.
Common scenarios
Summer-only worker (student)
If your annual income is below the standard deduction ($15,000 single in 2026), you owe zero federal income tax. Any federal withholding comes back as a refund. FICA is still withheld (rarely refunded).
Holiday retail (Nov to Jan)
Spans two tax years. You receive a W-2 for each calendar year you worked.
Year-round seasonal across multiple employers
One W-2 per employer. File one return combining all income.