You fill out Indiana Withholding Form WH-4 by entering your personal identifying details, claiming your personal and dependent exemptions on lines 1 through 6, listing your County of Residence and County of Principal Employment as they exist on January 1 of the tax year, adding any voluntary extra withholding on line 7, and signing and dating the form before handing it to your Indiana employer on or before your first day of work. The form is officially titled the Employee’s Withholding Exemption and County Status Certificate and is issued by the Indiana Department of Revenue.
The problem this form solves is that Indiana imposes both a flat state adjusted gross income tax under Indiana Code 6-3 and a local income tax under Indiana Code 6-3.6, and your employer has no lawful way to know which county rate to apply, how many exemptions you qualify for, or whether you want extra money withheld unless you tell them in writing. Under IC 6-3-4-8, every Indiana employer must deduct and remit state and county income tax from each paycheck, and the employer, not you, becomes personally liable if the withholding is wrong. The Indiana Administrative Code 45 IAC 3.1-1-97 requires the WH-4 to be on file before the first payroll.
According to the Indiana Department of Revenue’s 2025 Annual Report, Indiana processed over 3.4 million individual income tax returns and collected more than $7.8 billion in individual income tax, making accurate WH-4 completion a high-volume, high-stakes task for nearly every working Hoosier.
Here is what you will learn in this guide:
- 📝 The exact line-by-line method to complete every box on the WH-4 without triggering a corrected form.
- 🗺️ How the County of Residence and County of Principal Employment rules change your paycheck based on where you slept on January 1.
- 🛡️ The way reciprocity agreements with Kentucky, Michigan, Ohio, Pennsylvania, and Wisconsin can legally zero out your Indiana withholding.
- ⚠️ The seven most expensive mistakes workers make on the WH-4 and the penalty each mistake can trigger.
- 🎖️ The special rules for military spouses, nonresidents, retirees, and teen first jobs that most payroll clerks never explain.
What Form WH-4 Actually Is and Why It Exists
Form WH-4 is the state-level cousin of the federal Form W-4, and it serves one narrow but critical purpose. It tells your employer how much Indiana state and county income tax to withhold from every paycheck. Without a completed WH-4, your employer must withhold at the highest rate with zero exemptions, and your take-home pay will drop sharply.
The legal authority for the form sits in IC 6-3-4-8, which commands every employer paying wages in Indiana to deduct income tax. The companion rule in 45 IAC 3.1-1-97 spells out that the exemption certificate must be signed, kept by the employer for at least three years, and produced on demand during an audit.
The federal Form W-4 is not a substitute
Many new hires try to hand in only a federal Form W-4 and assume Indiana will figure itself out. That does not work in Indiana. The state has its own exemption math, its own county tax layer, and its own nonresident rules that the federal form cannot capture. The consequence of skipping WH-4 is that your employer must default to zero exemptions under the guidance in Departmental Notice #1, which almost always over-withholds by several hundred dollars per year.
A common misconception is that the federal W-4 and the Indiana WH-4 can share numbers. They cannot. Federal allowances were eliminated in 2020, but Indiana still uses a dollar-based exemption system tied to IC 6-3-1-3.5.
The flat Indiana state rate and the phase-down
Indiana levies a flat state adjusted gross income tax. Under House Enrolled Act 1001 (2023), the rate is scheduled to drop to 3.00% for tax year 2026 and 2.90% for 2027. Because the rate is flat, every dollar of wages above your exemptions is taxed the same way.
The consequence of a flat rate is simple math, but a miscalculated exemption still costs you cash flow throughout the year. A real-world example: Maya, a cashier in Evansville earning $32,000, claims one personal exemption of $1,000 and one dependent exemption of $3,000, leaving $28,000 subject to the flat 3.00% state tax, or roughly $840 in state withholding for the year.
The county tax layer
On top of the flat state rate, every Indiana county levies a local income tax under IC 6-3.6. Rates for 2026 range from 0.50% in Vermillion County to 3.38% in Pulaski County, as published in the 2026 Departmental Notice #1. The WH-4 is the only document that tells your employer which county rate to use.
A common misconception is that your county tax follows your work location. It does not. It follows your county of residence on January 1 of the tax year, with a fallback to your county of principal employment.
Line-by-Line Walkthrough of the 2026 WH-4
The current form is a single page with a top identifying block, seven numbered exemption and county lines, and a signature block. You can download the blank form from the official IDOR forms library.
Top identifying block
Enter your full legal name exactly as it appears on your Social Security card. Enter your Social Security Number in the SSN box. Enter your complete home address including street, city, state, and ZIP code. The employer will use this address to confirm county status.
The consequence of using a nickname or a former married name is that the Indiana Department of Revenue may reject the year-end Form WH-3 filing and pend your refund. Consider Devon, a new nurse in Bloomington, who wrote “Dev” instead of “Devon” and waited 14 weeks for a refund that should have arrived in three.
Line 1 — Personal exemption
Check the box on line 1 to claim one personal exemption of $1,000 under IC 6-3-1-3.5(a)(3). Almost every worker claims this line. The only people who skip it are dependents claimed on another taxpayer’s return, such as a college student whose parents still claim them.
The consequence of skipping line 1 when you qualify is an extra $30 of state tax withheld per year at the 2026 rate, plus your county share. The consequence of claiming it when you are a dependent of someone else is under-withholding and a bill at filing time.
Line 2 — Spouse exemption
Check line 2 if you are married, your spouse does not claim a personal exemption on their own WH-4, and you file jointly. This gives you a second $1,000 exemption.
A common mistake is for both spouses to claim the spouse exemption on their separate WH-4 forms. That double-dipping creates an under-withholding that will show up on the joint Form IT-40 in April.
Line 3 — Additional exemption for age 65+ or blind
Line 3 asks for the number of additional $1,000 exemptions for you or your spouse being age 65 or older, or being blind, under IC 6-3-1-3.5(a)(4). Each qualifying status is a separate exemption, so a blind 70-year-old taxpayer with a blind 70-year-old spouse could enter 4 on this line.
The real-world consequence is meaningful for retirees with part-time wages. Carol, a 68-year-old greeter in South Bend, claims 1 on line 3, which shields another $1,000 from the 3.00% state tax and her Saint Joseph County 1.75% local tax.
Line 4 — Additional dependent exemption
Line 4 captures the additional $1,500 exemption for each qualifying child or stepchild who is a “qualifying child” or a “qualifying relative” under the rules of IC 6-3-1-3.5(a)(5), which mirrors Internal Revenue Code §152. This is in addition to, not instead of, the regular dependent exemption on line 5.
The consequence of missing line 4 is large for families. Each child adds $1,500 of protected wages, which at the combined state-plus-county rate in Marion County saves roughly $75 per child per year.
Line 5 — Number of dependent exemptions
Line 5 is the count of dependent exemptions at $1,000 each. Every dependent you will claim on your IT-40 goes here. A new dependent who qualifies for line 4 also counts on line 5.
A common misconception is that line 5 is only for biological children. It includes any person who meets the dependent tests, such as an elderly parent living in your home whom you support.
Line 6 — First-time claim of adopted child exemption
Line 6 provides an additional $3,000 exemption for the first year a child is claimed as a dependent following legal adoption, under IC 6-3-1-3.5(a)(7). You only claim this in the single tax year the adoption closes.
Consider James and Priya, who finalize the adoption of their daughter Leela in March 2026. They each update their WH-4 to enter 1 on line 6, which removes an extra $3,000 from withholdable wages for 2026 only.
County of Residence and County of Principal Employment
Below the numbered lines, the form asks for two counties and the two-digit county code for each. The county code list is published in Departmental Notice #1.
Your County of Residence is the Indiana county where you maintained your primary home on January 1 of the tax year. Your County of Principal Employment is the Indiana county where you worked on January 1. If you were not an Indiana resident on January 1, enter 00 for County of Residence and the actual county code for Principal Employment.
The consequence of miscoding these fields is that the wrong county receives your local income tax, and correcting the split requires an amended Form IT-40 along with a written explanation.
Line 7 — Additional amount withheld
Line 7 lets you ask your employer to withhold a flat extra dollar amount per pay period. This is useful for side-gig earners who want to avoid an underpayment penalty under IC 6-8.1-10-2.1.
A common mistake is entering an annual total instead of a per-paycheck amount. If you want $520 extra per year and you are paid biweekly, enter $20 on line 7, not $520.
Signature and date
The form is not valid until you sign and date it in the signature block. An unsigned WH-4 is treated as no WH-4 at all, and the employer must default to zero exemptions.
Exemption Dollar Values at a Glance
| Exemption Type | 2026 Amount |
|---|---|
| Personal exemption, line 1 | $1,000 under IC 6-3-1-3.5 |
| Spouse exemption, line 2 | $1,000 |
| Age 65+ or blind, line 3 each | $1,000 |
| Additional dependent child, line 4 each | $1,500 |
| Regular dependent, line 5 each | $1,000 |
| First-year adopted child, line 6 | $3,000 |
County Status Rules You Cannot Guess At
County status is the single most misunderstood part of the WH-4. The local income tax framework hinges on two snapshots taken on January 1 each year.
The January 1 snapshot rule
Under IC 6-3.6-8-1, your county of residence and county of principal employment are locked in based on where you lived and worked on January 1. If you move to a different county on January 2, the old county still gets your local income tax for the entire year.
The consequence is that a mid-year move does not change your county withholding until the next January. A real-world example: Tyrese moves from Allen County to Hamilton County in June 2026. His WH-4 keeps the Allen County code until he files a new WH-4 effective January 1, 2027.
A common misconception is that filing a new WH-4 the day after you move will change your county rate immediately. It will not.
Out-of-state resident working in Indiana
If you lived outside Indiana on January 1 but worked in Indiana, you enter 00 in the County of Residence box and the real county code in the County of Principal Employment box. Your employer withholds only the nonresident local income tax rate for the work county, which is usually lower than the resident rate.
Reciprocity states
Indiana has statutory reciprocity agreements with Kentucky, Michigan, Ohio, Pennsylvania, and Wisconsin under IC 6-3-5-1. Residents of those states who work in Indiana file Form WH-47 instead of the WH-4 and owe zero Indiana state tax on wages, though they still owe Indiana county tax.
Three Scenarios Indiana Workers Face
Scenario 1: Marion County resident working in Hamilton County
| Filer Action | Paycheck Result |
|---|---|
| Lists Marion (49) as County of Residence | 2.02% Marion resident rate applies to all wages |
| Lists Hamilton (29) as Principal Employment | Hamilton rate is ignored because residence controls |
| Claims 1 personal + 2 dependents on lines 1 and 5 | $3,000 of annual wages shielded from state and county tax |
Scenario 2: Louisville resident commuting to Jeffersonville
| Filer Action | Paycheck Result |
|---|---|
| Files Form WH-47 instead of WH-4 | Zero Indiana state tax withheld under reciprocity |
| Still lists Clark County (10) as Principal Employment | Clark County nonresident local tax still applies |
| Pays Kentucky state tax through employer | Avoids double state taxation |
Scenario 3: Fort Wayne teen’s first job
| Filer Action | Paycheck Result |
|---|---|
| Skips line 1 because claimed as parent’s dependent | Full wages subject to state tax |
| Claims 0 on lines 2 through 6 | No dependent shielding |
| Lists Allen County (02) for both counties | Allen resident rate of 1.59% applies |
Three Named-Person Examples
Maya, the Evansville cashier, files her WH-4 with lines 1 and 5 checked and 2 entered on line 5 for her two children, with Vanderburgh County (82) for both county lines. Her annual exemption total becomes $1,000 plus $2,000 plus $3,000 on line 4 for the two additional dependent amounts, equaling $6,000 shielded from the 3.00% state rate and Vanderburgh’s 1.2% local rate.
Devon, the Bloomington nurse, moves from Monroe County to Brown County on December 20, 2025. Because the move happened before January 1, 2026, Devon updates the WH-4 to list Brown County (07) as County of Residence and Monroe (53) as County of Principal Employment, and the employer begins withholding the Brown County resident rate on the first January payroll.
Carol, the South Bend greeter, is 68 and legally blind. She checks line 1, enters 2 on line 3 for age and blindness, and lists Saint Joseph (71) for both counties. Her total exemptions equal $3,000.
Mistakes to Avoid
- Leaving the WH-4 unsigned, which forces the employer to withhold at zero exemptions under the default rule in 45 IAC 3.1-1-97.
- Claiming the spouse exemption on both spouses’ WH-4s, which causes an underpayment that triggers the IC 6-8.1-10-2.1 10% underpayment penalty.
- Using your work county as County of Residence, which sends your local income tax to the wrong county and delays refund processing.
- Entering an annual dollar figure on line 7 instead of a per-paycheck figure, which creates massive over-withholding.
- Skipping Form WH-47 when you live in a reciprocity state, which causes unnecessary Indiana state tax to be withheld all year.
- Claiming line 6 in years after the adoption closed, which is false and can be treated as a fraudulent exemption certificate under IC 6-3-6-11.
- Failing to file a new WH-4 after a January 1 county change, which locks in the wrong county rate for the entire tax year.
- Listing a P.O. Box instead of a physical address, which prevents the employer from verifying county status.
- Treating the federal W-4 as a substitute for the WH-4, which forces the employer to default to zero exemptions.
- Claiming exemptions for dependents who do not meet the IRC §152 tests, which creates a balance due plus interest.
Do’s and Don’ts for the WH-4
- Do file a fresh WH-4 on or before your first day of work, because payroll runs cannot be retroactively re-coded without a corrected WH-3 at year end.
- Do update the WH-4 within 10 days of any exemption-reducing event like a divorce, under the spirit of IC 6-3-4-8, because waiting creates under-withholding.
- Do keep a personal copy of every WH-4 you sign, because audit disputes often hinge on the signed original.
- Do use Form WH-47 if you live in Kentucky, Michigan, Ohio, Pennsylvania, or Wisconsin, because only that form activates reciprocity.
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Do call the Indiana DOR taxpayer services line at 317-232-2240 if your county status is unclear, because a 10-minute call prevents a 10-week refund delay.
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Don’t claim more exemptions than you will actually report on your IT-40, because IC 6-3-6-11 treats knowingly false certificates as a Class A misdemeanor.
- Don’t backdate a WH-4 to the start of the year, because the employer’s payroll records will not match and the audit trail will flag the discrepancy.
- Don’t leave the county code boxes blank, because the employer will default to the highest applicable county rate.
- Don’t combine line 4 and line 5 counts, because each line has its own dollar value.
- Don’t assume your employer will remind you to update after a life event, because the duty rests on the employee under 45 IAC 3.1-1-97.
Pros and Cons of Claiming Every Exemption You Qualify For
- Pro: higher take-home pay each pay period, because more wages are shielded from withholding.
- Pro: better monthly cash flow for debt reduction, because you stop lending money interest-free to the state.
- Pro: reduced over-withholding that ties up cash, because Indiana pays no interest on excess withholding until after the refund deadline under IC 6-8.1-9-2.
- Pro: accurate matching between W-2 box 17 and the IT-40, which speeds refund processing.
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Pro: simpler reconciliation on Schedule CT-40 because county withholding matches actual county liability.
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Con: higher risk of an April balance due if a dependent is incorrectly counted.
- Con: potential exposure to the underpayment penalty under IC 6-8.1-10-2.1 if you under-withhold.
- Con: need to re-file WH-4 after every life event, which is an administrative chore.
- Con: employer scrutiny if the number of exemptions looks unusually high, which can trigger a “lock-in” request.
- Con: county-status errors can send your local tax to the wrong county, which forces a written correction.
Employer Duties and Penalties
Under IC 6-3-4-8(g), the employer becomes personally liable for any state and county income tax that should have been withheld but was not. The employer must also file an annual Form WH-3 reconciliation and issue a Form W-2 showing Indiana state wages in box 16 and county tax in box 19.
The consequence of employer noncompliance can include the 10% late-filing penalty of IC 6-8.1-10-2.1, interest at the rate published in the annual Departmental Notice #3, and in willful cases, referral for criminal prosecution under IC 6-3-6-10.
A real-world example: a small Indianapolis landscaping firm failed to collect WH-4s from six seasonal workers in 2023 and defaulted to no withholding. The DOR assessment totaled roughly $4,800 in tax, $480 in penalty, and $220 in interest, all charged to the employer, not the workers.
Special Filer Situations
Nonresident military spouses
Under the federal Servicemembers Civil Relief Act and Military Spouses Residency Relief Act, a military spouse who is in Indiana only because of military orders keeps the domicile of the servicemember. Indiana implements this through Information Bulletin #27, which allows the spouse to file Form WH-4MIL and have zero Indiana state tax withheld.
The consequence of skipping WH-4MIL is a year of unnecessary Indiana withholding that must be refunded by filing a nonresident IT-40PNR.
Retirees with pension withholding
Pension administrators use Form WH-4P rather than the standard WH-4. This form lets retirees elect voluntary Indiana state and county withholding on periodic pension payments.
A common misconception is that Social Security benefits require a WH-4P. They do not, because Indiana does not tax Social Security under IC 6-3-2-9.
Indiana residents working out of state
An Indiana resident working in Illinois, Missouri, or any non-reciprocity state still owes Indiana state and county tax on every dollar earned, because Indiana taxes residents on worldwide income. The worker files a regular WH-4 with their Indiana employer, if any, and claims a credit for taxes paid to the other state on Schedule 6 of the IT-40.
How to Submit, Update, and Correct the WH-4
You give the completed WH-4 directly to your employer’s payroll office. Do not mail it to the Indiana Department of Revenue. The DOR only receives the form if it is specifically requested during an audit under 45 IAC 3.1-1-97.
To update, simply fill out a new WH-4 with the current date, and the employer must begin using it by the first payroll that starts at least 30 days after submission, per the guidance in Departmental Notice #1. To correct an error that affected a closed tax year, you file an amended IT-40 using Form IT-40X within three years of the original due date.
Key Entities You Need to Know
The Indiana Department of Revenue is the state agency that enforces withholding rules. The Indiana General Assembly writes the underlying statutes in Title 6. The Internal Revenue Service sets the dependent definitions that Indiana borrows. County auditors certify the local income tax rates that appear in Departmental Notice #1. Your employer is the withholding agent who remits the tax through the INTIME portal.
Relevant Rulings and Guidance
In Letter of Findings 01-20200435, the DOR held that an employee’s failure to file a corrected WH-4 after a county change did not shift liability to the employer, because the employer reasonably relied on the most recent signed form. The Indiana Tax Court in Dept. of State Revenue v. Caterpillar, Inc., 15 N.E.3d 579 (Ind. 2014) emphasized that the withholding obligation is strict and narrowly construed. The DOR’s Commissioner’s Directive #25 clarifies the interaction between federal W-4 changes and the Indiana WH-4, confirming that the two forms are not interchangeable.
FAQs
Do I have to file a new WH-4 every year?
No. You only file a new WH-4 when your exemptions, county status, name, address, or desired extra withholding changes, because the signed form remains valid until you revoke it or leave the job.
Can I claim more exemptions on WH-4 than on my federal W-4?
Yes. Indiana uses its own dollar-based exemption system separate from the federal withholding calculation, so the exemption counts often differ legitimately between the two forms.
Do I still owe Indiana tax if I live in Kentucky and work in Jeffersonville?
No. Under the reciprocity agreement in IC 6-3-5-1, you file Form WH-47 and owe zero Indiana state tax on wages, though Clark County local income tax still applies.
Can my employer refuse to accept my WH-4?
No. The employer must accept a properly completed and signed WH-4, though they may notify the DOR if the claimed exemptions look clearly inconsistent with the wages.
Will I owe a penalty if I claim too many exemptions?
Yes. Under-withholding can trigger the 10% underpayment penalty in IC 6-8.1-10-2.1, plus interest, unless you meet the safe harbor of paying 90% of current-year tax or 100% of prior-year tax.
Is the WH-4 filed with the Indiana Department of Revenue?
No. The employer keeps the form on file for at least three years and produces it only on DOR request during an audit.
Do remote workers in Indiana use the WH-4?
Yes. Any worker earning Indiana-source wages uses the WH-4, and remote workers list their actual Indiana county of residence and principal employment on January 1.
Can I change my County of Residence mid-year?
No. Indiana law locks county status to the January 1 snapshot, so mid-year moves do not update county withholding until the following January 1.
Does the WH-4 apply to independent contractors?
No. Independent contractors are not subject to wage withholding and use Form W-9 and the contractor payment rules instead.
Can I write “exempt” on the WH-4?
No. Indiana’s WH-4 has no full exemption checkbox for general workers, so you must claim exemptions line by line, with only nonresident military spouses using the separate WH-4MIL.
What happens if I lose my copy of the WH-4?
Yes, your employer must give you a copy on request, because the signed form is part of your personnel record under general Indiana employment record rules.
Is line 7 extra withholding refundable?
Yes. Any excess withheld under line 7 is refunded after you file your IT-40, just like regular over-withholding.
Related reading
- How to Fill Out Illinois Withholding Form IL-W-4 + FAQs
- How to Fill Out Ohio Withholding Form IT 4 + FAQs
- How to Fill Out Iowa Withholding Form IA W-4 + FAQs
- How to Fill Out Kansas Withholding Form K-4 + FAQs
- How to Fill Out Kentucky Withholding Form K-4 + FAQs
- How to Fill Out DOL Form WH-4 (w/Examples) + FAQs
- How to Fill Out West Virginia Withholding Form IT-104 + FAQs