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Illinois Department of Revenue

Form IL-W-4

Employee’s and other Payee’s Illinois Withholding

Allowance Certificate and Instructions

How do I figure the

effective for the first payment of compensa-

Note: These instructions are written for em-

tion made to you after this form is filed. If

ployees to address withholding from wages.

correct number of

you already have a Form IL-W-4 on file with

However, this form can also be completed and

allowances?

this employer, your employer may allow any

submitted to a payor if an agreement was made

Complete the worksheet on the back of this

change you file on this form to become effec-

to voluntarily withhold Illinois Income tax from

page to figure the correct number of allow-

tive immediately, but is not required by law

other (non-wage) Illinois income.

ances you are entitled to claim. Give your

to change your withholding until the first pay-

completed Form IL-W-4 to your employer.

Who must complete Form IL-W-4?

ment of compensation is made to you after

Keep the worksheet for your records.

the first day of the next calendar quarter (that

If you are an employee, you must complete

is, January 1, April 1, July 1, or October 1)

this form so your employer can withhold the

that falls at least 30 days after the date you

If you have more than one job or your

correct amount of Illinois Income Tax from

file the change with your employer.

spouse works, your withholding usually will

your pay. The amount withheld from your pay

Example: If you have a baby and file a

be more accurate if you claim all of your al-

depends, in part, on the number of allow-

new Form IL-W-4 with your employer to

lowances on the Form IL-W-4 for the highest-

ances you claim on this form.

claim an additional allowance for the baby,

paying job and claim zero on all of your other

Even if you claimed exemption from with-

your employer may immediately change

IL-W-4 forms.

holding on your federal Form W-4, U.S.

the withholding for all future payments of

Employee’s Withholding Allowance Cer-

How do I avoid underpaying my

compensation. However, if you file the new

tificate, because you do not expect to

form on September 1, your employer does

tax and owing a penalty?

owe any federal income tax, you may be

not have to change your withholding until the

required to have Illinois Income Tax with-

You can avoid underpayment by reducing the

first payment of compensation is made to

held from your pay (see Publication 130,

number of allowances or requesting that your

you after October 1. If you file the new form

Who is Required to Withhold Illinois In-

employer withhold an additional amount from

on September 2, your employer does not

come Tax). If you are claiming exempt

your pay. Even if your withholding covers

have to change your withholding until the first

status from Illinois withholding, you must

the tax you owe on your wages, if you have

payment of compensation made to you after

check the exempt status box on Form

non-wage income that is taxable, such as

December 31.

IL-W-4 and sign and date the certificate. Do

interest on a bank account or dividends on

not complete Lines 1 through 3.

an investment, you may have additional tax

How long is Form IL-W-4 valid?

liability. If you owe more than $500 tax at the

If you are a resident of Iowa, Kentucky,

Your Form IL-W-4 remains valid until a new

end of the year, you may owe a late-payment

Michigan, or Wisconsin, or a military spouse,

form you have submitted takes effect or until

penalty or will be required to make estimated

see Form W-5-NR, Employees Statement of

your employer is required by the Department

tax payments. For additional information

Nonresidence in Illinois, to determine if you

to disregard it. Your employer is required to

on penalties see Publication 103, Uniform

are exempt.

disregard your Form IL-W-4 if

Penalties and Interest. Visit our website at

If you do not file a completed Form

•

you claim total exemption from Illinois

tax.illinois.gov to obtain a copy.

IL-W-4 with your employer, if you fail to sign

Income Tax withholding, but you have

the form or to include all necessary informa-

Where do I get help?

not filed a federal Form W-4 claiming

tion, or if you alter the form, your employer

total exemption, or

• Visit our website at tax.illinois.gov

must withhold Illinois Income Tax on the

•

• Call our Taxpayer Assistance Division

the Internal Revenue Service (IRS) has

entire amount of your compensation, without

instructed your employer to disregard

at 1 800 732-8866 or 217 782-3336

allowing any exemptions.

• Call our TDD (telecommunications

your federal Form W-4.

When must I submit this form?

device for the deaf) at 1 800 544-5304

What is an “exemption”?

• Write to

You should complete this form and give it

An “exemption” is a dollar amount on which

ILLINOIS DEPARTMENT OF REVENUE

to your employer on or before the date you

PO BOX 19044

you do not have to pay Illinois Income Tax

start work. You must submit Form IL-W-4

SPRINGFIELD IL 62794-9044

that you may claim on your Illinois Income

when Illinois Income Tax is required to be

tax return.

withheld from compensation that you receive

What is an “allowance”?

as an employee. You may file a new Form

IL-W-4 any time your withholding allowances

The dollar amount that is exempt from

increase. If the number of your claimed al-

Illinois Income Tax is based on the number

lowances decreases, you must file a new

of allowances you claim on this form. As an

Form IL-W-4 within 10 days. However, the

employee, you receive one allowance unless

death of a spouse or a dependent does not

you are claimed as a dependent on another

affect your withholding allowances until the

person’s tax return (e.g., your parents claim

next tax year.

you as a dependent on their tax return). If

you are married, you may claim additional

When does my Form IL-W-4

allowances for your spouse and any depen-

take effect?

dents that you are entitled to claim for federal

If you do not already have a Form IL-W-4

income tax purposes. You also will receive

on file with your employer, this form will be

additional allowances if you or your spouse

are age 65 or older, or if you or your spouse

are legally blind.

IL-W-4 (R-12/14)

Form Il-W-4 - Employee'S And Other Payee'S Illinois Withholding Allowance Certificate And Instructions - Illinois Department Of Revenue

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