What's The Difference Between A W2 and W4

If you’ve ever started a new job and wondered why you fill out one form in January and receive another the following January, you’re not alone.

The W-4 form and W-2 form are two of the most common IRS documents employees handle, and they’re closely related. The W-4 controls how much tax is taken out of each paycheck. The W-2 summarizes those details at year’s end so you can report your income and file your tax return.

Understanding how these forms work together can prevent surprises at tax time - like unexpected bills or refunds that are larger than necessary.