Form Il-W-4 - Employee'S Illinois Withholding Allowance Certificate And Instructions 2011


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Illinois Department of Revenue
Form IL‑W‑4
Employee’s Illinois Withholding Allowance
Certificate and Instructions
Who must complete Form IL‑W‑4?
claim for federal income tax purposes. You
is made to you after the first day of the
also will receive additional allowances if
next calendar quarter (that is, January 1,
If you are an employee, you must com-
you or your spouse are age 65 or older, or
April 1, July 1, or October 1) that falls at
plete this form so your employer can with-
if you or your spouse are legally blind.
least 30 days after the date you file the
hold the correct amount of Illinois Income
change with your employer.
Tax from your pay. The amount withheld
How do I figure the correct
from your pay depends, in part, on the
Example: If you have a baby and file a
number of allowances?
number of allowances you claim on this
new Form IL-W-4 with your employer to
claim an additional exemption for the baby,
Complete the worksheet on the back of
your employer may immediately change
this page to figure the correct number
Even if you claimed exemption from
the withholding for all future payments of
of allowances you are entitled to claim.
withholding on your federal Form W-4,
compensation. However, if you file the new
Give your completed Form IL-W-4 to your
U.S. Employee’s Withholding Allowance
form on September 1, your employer does
employer. Keep the worksheet for your
Certificate, because you do not expect
not have to change your withholding until
to owe any federal income tax, you may
the first payment of compensation is made
be required to have Illinois Income Tax
If you have more than one job or
to you after October 1. If you file the new
withheld from your pay (see Publication
your spouse works, you should figure the
form on September 2, your employer does
130, Who is Required to Withhold Illinois
total number of allowances you are en-
not have to change your withholding until
Income Tax). If you are claiming exempt
titled to claim. Your withholding usually will
the first payment of compensation made to
status from Illinois withholding, you must
be more accurate if you claim all of your
you after December 31.
check the exempt status box on Form
allowances on the Form IL-W-4 for the
IL-W-4 and sign and date the certificate.
highest-paying job and claim zero on all of
How long is Form IL‑W‑4 valid?
Do not complete Lines 1 through 3.
your other IL-W-4 forms.
Your Form IL-W-4 remains valid until a
If you are a resident of Iowa, Kentucky,
What if I underpay my tax?
new form you have filed takes effect or
Michigan, or Wisconsin, or a military
until your employer is required by the
If the amount withheld from your com-
spouse, see Form W-5-NR, Employees
department to disregard it. Your employer
pensation is not enough to cover your
Statement of Nonresidence in Illinois, to
is required to disregard your Form IL-W-4
determine if you are exempt.
tax liability for the year, (e.g., you have
if you claim total exemption from Illinois
non-wage income, such as interest or
If you do not file a completed Form
Income Tax withholding, but you have not
dividends), you may reduce the number of
IL-W-4 with your employer, if you fail to
filed a federal Form W-4 claiming total
allowances or request that your employer
sign the form or to include all necessary
exemption. Also, if the Internal Revenue
withhold an additional amount from your
information, or if you alter the form, your
Service (IRS) has instructed your em-
pay. Otherwise, you may owe additional
employer must withhold Illinois Income Tax
ployer to disregard your federal Form W-4,
tax at the end of the year. If you do not
on the entire amount of your compensa-
your employer must also disregard your
have enough tax withheld from your pay,
tion, without allowing any exemptions.
Form IL-W-4. Finally, if you claim 15 or
and you owe more than $500 tax at the
more exemptions on your Form IL-W-4
When must I file?
end of the year, you may owe a late-pay-
without claiming at least the same number
ment penalty. You should either increase
You must file Form IL-W-4 when Illinois
of exemptions on your federal Form W-4,
the amount you have withheld from your
Income Tax is required to be withheld from
and your employer is not required to refer
pay, or you must make estimated tax pay-
compensation that you receive as an em-
your federal Form W-4 to the IRS for re-
ployee. You should complete this form and
view, your employer must refer your Form
You may be assessed a late‑payment
give it to your employer on or before the
IL-W-4 to the department for review. In that
penalty if your required estimated pay-
date you start working for your employer.
case, your Form IL-W-4 will be effective
ments are not paid in full by the due dates.
You may file a new Form IL-W-4 any time
unless and until the department notifies
your withholding allowances increase. If
You may still owe this penalty for an
your employer to disregard it.
the number of your previously claimed al-
earlier quarter, even if you pay enough tax
lowances decreases, you must file a new
What is an “exemption”?
later to make up the underpayment from a
Form IL-W-4 within 10 days. However, the
previous quarter.
An “exemption” is a dollar amount on
death of a spouse or a dependent does
For additional information on penalties,
which you do not have to pay Illinois
not affect your withholding allowances until
see Publication 103, Uniform Penal-
Income Tax. Therefore, your employer will
the next tax year.
ties and Interest. Visit our website at
withhold Illinois Income Tax based on your to obtain a copy.
compensation minus the exemptions to
When does my Form IL‑W‑4
which you are entitled.
take effect?
Where do I get help?
What is an “allowance”?
If you do not already have a Form IL-W-4
• Visit our website at
on file with your employer, this form will be
The dollar amount that is exempt from
• Call our Taxpayer Assistance Division
effective for the first payment of compen-
Illinois Income Tax is based on the number
at 1 800 732‑8866 or 217 782‑3336
sation made to you after this form is filed.
of allowances you claim on this form. As
If you already have a Form IL-W-4 on file
• Call our TDD (telecommunications
an employee, you receive one allowance
with this employer, your employer may
device for the deaf) at 1 800 544‑5304
unless you are claimed as a dependent on
allow any change you file on this form to
another person’s tax return (e.g., your par-
• Write to
become effective immediately, but is not
ents claim you as a dependent on their tax
required by law to change your withhold-
return). If you are married, you may claim
ing until the first payment of compensation
PO BOX 19044
additional allowances for your spouse and
any dependents that you are entitled to
IL-W-4 (R-5/12)


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