IT 4 Instructions
Most individuals are subject to Ohio income tax on their
wages, salaries, or other compensation. To ensure this
tax is paid, employers maintaining an oce or transacting
business in Ohio must withhold Ohio income tax, and school
district income tax if applicable, from each individual who is
an employee.
Such employees who are subject to Ohio income tax (and
school district income tax, if applicable) should complete
sections I, II, and IV of the IT 4 to have their employer withhold
the appropriate Ohio taxes from their compensation. If the
employee does not complete the IT 4 and return it to his/her
employer, the employer:
z Will withhold Ohio tax based on the employee claiming
zero exemptions, and
z Will not withhold school district income tax, even if the
employee lives in a taxing school district.
An individual may be subject to an interest penalty for
underpayment of estimated taxes (on form IT/SD 2210)
based on under-withholding.
Certain employees may be exempt from Ohio withholding
because their income is not subject to Ohio tax. Such
employees should complete sections I, III, and IV of the IT
4 only.
The IT 4 does not need to be led with the Department
of Taxation. Your employer must maintain a copy as part of
its records.
R.C. 5747.06(A) and Ohio Adm.Code 5703-7-10.
Section I
Enter the four-digit school district number of your primary
address. If you do not know your school district of residence
or its school district number, use The Finder at tax.ohio.gov.
You can also verify your school district by contacting your
county auditor or county board of elections.
If you move during the tax year, complete an updated IT
4 immediately reecting your new address and/ or school
district of residence.
Section II
Line 1: If you can be claimed on someone else’s Ohio income
tax return as a dependent, then you are to enter “0” on this
line. Everyone else may enter “1”.
Line 2: If you are single, enter “0” on this line. If you are
married and you and your spouse le separate Ohio Income
tax returns as “Married ling Separately” then enter “0” on
this line.
Line 3: You are allowed one exemption for each dependent.
Your dependents for Ohio income tax purposes are the
same as your dependents for federal income tax purposes.
See R.C. 5747.01(O).
Line 5: If you expect to owe more Ohio income tax than the
amount withheld from your compensation, you can request
that your employer withhold an additional amount of Ohio
income tax. This amount should be reported in whole dollars.
Note: If you do not request additional withholding from your
compensation, you may need to make estimated income tax
payments using form IT 1040ES or estimated school district
income tax payments using the SD 100ES. Individuals who
commonly owe more in Ohio income taxes than what is
withheld from their compensation include:
z Spouses who le a joint Ohio income tax return and both
report income, and
z Individuals who have multiple jobs, all of which are
subject to Ohio withholding.
Section III
This section is for individuals whose income is deductible
or excludable from Ohio income tax, and thus employer
withholding is not required. Such employee should check
the appropriate box to indicate which exemption applies to
him/her. Checking the box will cause your employer to not
withhold Ohio income tax and/or school district income tax.
The exemptions include:
z Reciprocity Exemption: If you are a resident of Indiana,
Kentucky, Pennsylvania, Michigan or West Virginia and
you work in Ohio, you do not owe Ohio income tax on
your compensation. Instead, you should have your
employer withhold income tax for your resident state.
R.C. 5747.05(A)(2).
z Resident Military Servicemember Exemption: If you are
an Ohio resident and a member of the United States
Army, Air Force, Navy, Marine Corps, or Coast Guard (or
the reserve components of these branches of the military)
or a member of the National Guard, you do not owe
Ohio income tax or school district income tax on your
active duty military pay and allowances received while
stationed outside of Ohio.
This exemption does not apply to compensation for nonactive
duty status or received while you are stationed in Ohio.
R.C. 5747.01(A)(21).
z Nonresident Military Servicemember Exemption: If
you are a nonresident of Ohio and a member of the
uniformed services (as dened in 10 U.S.C. §101),
you do not owe Ohio income tax or school district
income tax on your military pay and allowances.
z Nonresident Civilian Spouse of a Military Servicemember
Exemption: If you are the civilian spouse of a military
servicemember, your pay may be exempt from Ohio
income tax and school district income tax if all of the
following are true:
y Your spouse is a nonresident of Ohio;
y You and your spouse are residents of the same state;
y Your spouse is stationed in Ohio on military orders; and
y You are present in Ohio solely to be with your spouse.
You must provide a copy of the employee’s spousal military
identication card issued to the employee by the Department
of Defense when completing the IT 4.
As of 12/7/20 this new version of the IT 4 combines and replaces the following forms: IT 4 (previous version), IT 4NR, IT 4 MIL, and IT MIL SP.