W4 vs W2: The Differences, Similarities, and Fast Facts

  • November 13, 2020
  • Blog

What is the difference between a W2 and a W4? 

IRS Forms W4 and W2 both have to do with employers paying their employees, but they’re very different in function. 

Tax form W2 is used to record all the wages earned by an employee, as well as any taxes withheld from their paychecks throughout the year. This is completed by the employer and gives the employee (and the IRS) the information they need to file and process tax returns at the end of the year. 

Form W4 is completed by the employee, and it tells the employer how much money they should withhold from each paycheck. This amount is determined by your total income, number of dependents, custom adjustments, and a variety of other factors. If you have too much tax withheld, you’ll get a larger tax return at the end of the year. This comes at the expense of smaller take-home paychecks each pay period throughout the year. Don’t have enough taxes withheld, however, and you may find yourself owing the IRS come tax season.Let’s dive into both forms to get a better understanding of the difference between a W2 and a W4.

Form W-2

Form W2:

To quickly list what we know so far about the W2:

  • Record of wages earned and taxes withheld
  • Filled out by the employer
  • Used by the employee/IRS when filing/processing tax returns

Essentially the W2 is just the record of an employee’s income. Common questions about the W2 include:

Who sends out W2 forms?

Your employer, not the IRS, is responsible for sending out copies of a W2. They send one copy to the employee, one copy to the IRS, and should keep a copy on hand in case an employee misplaces theirs or delivery fails. 

When can I get my W2? 

The IRS requires employers to send out employee W2s by January 31st of each year. If an employer misses this deadline they can face steep fines. If it’s well past this deadline and you still haven’t received yours, here’s what to do about a missing W2.

Will my W2 be forwarded to my new address?

Remember that your employer(s), not the IRS, sends your W2 to you. Even if your address is updated in the IRS system, your employer may have an old address on file. Double check your address with your employer before tax season rolls around. This problem is especially common when a person switched jobs partway through the year — it’s vital to get your W2s from all employers that you worked for in a given year. To this end, set up address forwarding with the postal service to keep important letters heading your way — it won’t automatically find you otherwise. 

Does an independent contractor need a W2?

Independent contractors get their income reported through 1099 forms instead of W2s. For this reason, an independent contractor or other 1099 worker will never use a W2 when filing taxes. 

Form W-4

Form W4:

The form W4 is filled out so infrequently for some, that it becomes its own sort of confusing. It has also changed recently (as of the 2020 tax year) and lost some of its signature features of years past. 

As a brief review, IRS form W4:

  • Tells the employer how much tax to withhold from each paycheck
  • Is filled out by the employee
  • Amounts withheld are determined by factors such as dependents and family income according to a table defined by the IRS
  • Affects the size of an end-of-year tax return

The difference between a W4 vs W2 is this: if the form W2 is the scoreboard of a year’s income, the W4 is the game plan. A W4 determines in advance how much of each paycheck will be withheld. The W2 then records actual amounts as they are earned and withheld throughout the year. 

Saying the W4 is “filled out by the employee” does not mean the employee can choose indiscriminately how much they want removed from each paycheck, though it does give them some control. 

If an employee meets certain requirements that make it likely they will owe no taxes that year, they can apply for exemption from withholding. If they meet the requirements, the employer will take no taxes out of their paychecks, resulting in more take-home pay, but also the possibility of owing taxes. Withholding exemption requires a check and the employee to fill out a new W4 each year to maintain their exemption status.

Conversely, if an individual would rather play it safe and pay more taxes from each paycheck, they can request that more be withheld. This can be done as a custom amount, or by claiming fewer dependents. If the employee knows their spouse’s income will raise their tax liability bracket, they can indicate such and file for the higher rate. This is why it’s important to fill out a W4 properly — each dependent or dollar of expected income can directly affect the size of your take-home-checks every two weeks. 

Here are some specific answers to frequently asked questions about the W4 form:

Do I claim 0 or 1 withholding allowances on my W4?

This is possibly the most common question about W4s. It’s also obsolete! In years past, there was a box for “withholding allowances”. 0 withholding allowances meant that the highest amount of taxes was paid, and a 1 was used to indicate a typical single filers tax liability. More allowances could be used for numbers of dependents or other factors that decreased liability, with 5 being the highest (nearly equivalent to a tax withholding exemption.)

As of the 2020 tax year, withholding allowances are no longer on the W4. Instead, withholding is determined by dependents, income, and other factors as they correspond to the IRS table. Manipulating one’s tax withholding is now done by manipulating these other factors. 

Who counts as a dependent on a W4?

Dependents are children under 19 (unless students) for whom you provide support, or other qualifying family members who receive more than 50% of their support from you. These individuals must have limited income and cannot be able to be claimed as dependents on someone else’s tax return. 

Can I change my W4 at any time?

You can adjust your W4 whenever and as often as you want! You simply fill out a new form and get it on file with your employer. Keep in mind, making changes late in the year won’t have as large an effect on your taxes, as there will be less time for earnings and withholdings to accrue. 

Can I use a PO box as my address on my W4?

The IRS discourages using PO boxes for W4s, W2s, and other tax forms, except in cases where the post office does not deliver mail to your home. Not that there would be adverse consequences if this was the only problem with your tax return, but it’s a good idea to use your home address in case things get inspected a little more closely.

Who can claim as exempt from withholding?

The IRS puts down two rules for claiming exempt on a W4. 

  1. You had no tax liability the previous year, and 
  2. You expect no tax liability this year. 

That said, there are a few further exceptions.

  • If you made or make more than a thousand dollars, and $300 dollars of that is from un-work-related income, you cannot claim exemption. 
  • If you are going to claim dependents on your tax return, you cannot claim exemption. (this gets a lot of people, as their tax liability is reduced by their dependents)
  • If you plan on itemizing your deductions, you’re disqualified. 

W4 vs W2: Wrapping up

At this point, the difference between the W2 and the W4 should be completely apparent. Keep in mind, the W4 is the game plan for how points (income and withheld taxes) will be scored, and the W2 is the scoreboard as points (earnings and actual withholdings) are scored. One is the plan, the other is the record. Happy filing!