State W-4 Form | Detailed Withholding Forms by State Chart

Don’t Forget to Collect State W-4 Forms from New Hires

When you hire new employees, you need to collect information to verify employment eligibility and run payroll. Federal Forms W-4 and I-9 are just the beginning when it comes to new employee forms. You may also need to collect state-specific forms, including your state’s W-4. What is the state W-4 form?

What is a state W-4 form? 

State W-4s work similarly to the federal Form W-4, Employee’s Withholding Certificate. Employers use state W-4s to determine state income tax withholding for employees. States either use their own version of the state W-4 or the federal Form W-4. Unless your employees work in a state with no state income tax, they must fill out the W-4 state tax form before starting a new job.

definition of what is a state w-4 form

Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming do not have state income tax. Most other states require employees to complete the W-4 for state taxes, unless the state imposes a flat income tax rate.

Your employees’ information on the W-4 state form determines how much you will withhold from their wages for state income tax. 

Many states use state withholding allowances to determine withholding. Employees can claim state tax allowances for themselves, a spouse, or child. The more state tax withholding allowances an employee claims on their state W-4, the less you withhold.

Most states update their W-4 forms annually. Visit your state’s website to verify you are using the most up-to-date state W-4 form.

After collecting your employees’ completed state W-4 forms, use them to determine how much to withhold. Store employees’ state tax withholding forms in your records.

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Federal vs. state Forms W-4

As an employer, you may need to withhold three types of income tax from employee wages, including federal, state, and local income taxes. You must distribute both federal and state Forms W-4 to employees so you can accurately run payroll. But, what’s the difference?

Employees use the federal Form W-4 for federal income tax withholding. Employees use their state’s version of Form W-4 for state income tax withholding.

Updated federal W-4 

In 2020, the IRS released a new W-4 form that eliminated withholding allowances. However, many states still use withholding allowances for their state income tax structure. 

Because of this change, some states that previously used the federal form for state income tax withholding have created their own version of Form W-4 (e.g., Idaho). States that continue to use the federal version (e.g., Colorado) made changes to their state income tax structure. 

Here’s the bottom line: The 2020 version of the federal W-4 form may have done away with withholding allowances for federal income tax withholding. But, many states continue to use withholding allowances for state income tax withholding. 

Here are the states that have created their own version of the state W-4 form rather than using the IRS’s updated version:

  • Delaware* (employees could use either the federal or Delaware’s state W-4 form)
  • Idaho
  • Minnesota
  • Montana
  • Nebraska 
  • South Carolina 

These are the states that will continue to use the federal W-4 form:

  • Colorado
  • New Mexico 
  • North Dakota 
  • Utah

State tax withholding forms chart 

You cannot accurately run payroll until you know how much to withhold for state income tax. Use this chart to learn which state W-4 form you need to distribute to and collect from new hires.

StateState W-4 Form
AlabamaForm A-4, Employee’s Withholding Tax Exemption Certificate
AlaskaN/A, no state income tax
ArizonaArizona Form A-4, Employee’s Arizona Withholding Election
ArkansasForm AR4EC, State of Arkansas Employee’s Withholding Exemption Certificate
CaliforniaForm DE 4, Employee’s Withholding Allowance Certificate
ColoradoForm W-4, Employee’s Withholding Certificate; Colorado Income Tax Withholding Worksheet for Employers
ConnecticutForm CT-W4, Employee’s Withholding Certificate
D.C.Form D-4, DC Withholding Allowance Certificate
DelawareDelaware W-4, Employee’s Withholding Allowance Certificate
FloridaN/A, no state income tax
GeorgiaForm G-4, State of Georgia Employee’s Withholding Allowance Certificate
HawaiiForm HW-4, Employee’s Withholding Allowance and Status Certificate
IdahoForm ID W-4, Employee’s Withholding Allowance Certificate
IllinoisForm IL-W-4, Employee’s and other Payee’s Illinois Withholding Allowance Certificate and Instructions
IndianaForm WH-4, Employee’s Withholding Exemption and County Status Certificate
IowaForm IA W-4, Employee Withholding Allowance Certificate
KansasForm K-4, Kansas Employee’s Withholding Allowance Certificate
KentuckyForm K-4, Kentucky’s Withholding Certificate
LouisianaForm L-4, Employee Withholding Exemption Certificate
MaineForm W-4ME, Maine Employee’s Withholding Allowance Certificate
MarylandForm MW507, Employee’s Maryland Withholding Exemption Certificate
MassachusettsForm M-4, Massachusetts Employee’s Withholding Exemption Certificate
MichiganForm MI-W4, Employee’s Michigan Withholding Exemption Certificate
MinnesotaForm W-4MN, Minnesota Employee Withholding Allowance/Exemption Certificate
MississippiForm 89-350-12-2, Mississippi Employee’s Withholding Exemption Certificate
MissouriForm MO W-4, Employee’s Withholding Certificate
MontanaForm MW-4, Montana Employee’s Withholding Allowance and Exemption Certificate
NebraskaForm W-4N, Employee’s Nebraska Withholding Allowance Certificate
NevadaN/A, no state income tax
New HampshireN/A, no state income tax
New JerseyForm NJ-W4, Employee’s Withholding Allowance Certificate
New MexicoForm W-4, Employee’s Withholding Certificate
New YorkForm IT-2104, Employee’s Withholding Allowance Certificate
North CarolinaForm NC-4, Employee’s Withholding Allowance Certificate
North DakotaForm W-4, Employee’s Withholding Certificate
OhioForm IT-4, Employee’s Withholding Exemption Certificate
OklahomaForm OK-W-4, Employee’s Withholding Allowance Certificate
OregonForm OR-W-4, Oregon Employee’s Withholding Statement and Exemption Certificate
PennsylvaniaN/A, everyone pays a flat rate unless exempt
Rhode IslandRI W-4, State of Rhode Island Division of Taxation Employee’s Withholding Allowance Certificate
South CarolinaSC W-4, South Carolina Employee’s Withholding Allowance Certificate
South DakotaN/A, no state income tax
TennesseeN/A, no state income tax
TexasN/A, no state income tax
UtahForm W-4, Employee’s Withholding Certificate
VermontForm W-4VT, Employee’s Withholding Allowance Certificate
VirginiaForm VA-4, Employee’s Virginia Income Tax Withholding Exemption Certificate
Washington N/A, no state income tax
West VirginiaForm WV/IT-104, West Virginia Employee’s Withholding Exemption Certificate
WisconsinForm WT-4, Employee’s Wisconsin Withholding Exemption Certificate/New Hire Reporting
WyomingN/A, no state income tax

*Some states may require additional forms for special circumstances. Check with your state for more information. 

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Updating state tax withholding forms

Your employees may want to adjust their withholding on their state W-4 after completing the original form. For example, an employee may get married or divorced, add or remove a dependent, or go through another life event that affects their withholding.

Employees can update their state tax withholding forms throughout the year. Be sure to collect their updated state tax forms for your records and adjust your payroll.

State withholding and Form W-2 

Each year, you are responsible for reporting how much you paid employees and withheld from their wages for income and payroll taxes when filling out W-2, Wage and Tax Statement.

Boxes 15-17 on Form W-2 deal with your state. Report how much you withheld and remitted for state income tax in Box 17. Again, the amount you withheld for the year is based on the employee’s state W-4.

If your employees work in a state with state income tax, you need to collect state W-4 forms and store them in your records. Keep a copy in the cloud with Patriot’s online HR software. The HR software integrates with our online payroll. Try both for free today!

This article has been updated from its original publication date of December 31, 2018. 

This is not intended as legal advice; for more information, please click here.

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