W-4, W-2, 1099: The Forms That Decide Your April
Four forms run the entire US tax year. You fill in one, you receive the others, and mixing them up is how people end up owing money they didn't budget for.
Who gives what to whom
Four forms run the US tax year, and the easiest way to keep them straight is by direction of travel.
You give your employer a W-4 — it's the only one you fill in, and it sets how much tax comes out of each paycheck. Your employer gives you a W-2 in January, reporting last year's wages and everything withheld. A client gives you a 1099-NEC for $600 or more of contractor work, with nothing withheld at all. And you file a 1040, the annual return where every one of those gets reconciled.
One is an instruction you send. Two are reports you receive. One is the reckoning.
The 1099 cash-flow trap
A W-2 job withholds tax from every paycheck automatically. A 1099-NEC role withholds nothing — the full amount arrives in your account, and all of the tax is still owed.
Two things follow. You have to set the money aside yourself, because nobody else is doing it. And the IRS generally expects payment across the year rather than in one April lump, through quarterly estimated tax payments.
This is why a contract role at the same headline number is not the same offer. Self-employment tax, no withholding, and no employer benefits all sit underneath it.
If you're a W-2 employee who owed money last April, the lever is a new W-4 — not waiting until next April.
W-4 sets withholding (you control it). W-2 reports employee wages. 1099-NEC reports contractor pay with nothing withheld at all.
Sources
- About Form W-4, Employee's Withholding Certificate — Internal Revenue Service (2026)
- About Form 1099-NEC, Nonemployee Compensation — Internal Revenue Service (2026)
- Estimated Taxes — Internal Revenue Service (2026)