The Indiana WH-4AFF Withholding Tax Waiver for Nonresident Employee Working Less Than 31 Days in Indiana is a specialized tax form designed to provide relief for out-of-state workers who perform very brief assignments within Indiana’s borders. Under normal circumstances, any individual earning wages in Indiana would be subject to state and county income tax withholding, regardless of their residency status. However, Indiana tax law provides an exemption for nonresident employees who work in the state for thirty days or fewer during a single calendar year, recognizing that the administrative burden of withholding for such short-term work may outweigh the tax revenue collected. This form serves as a sworn affidavit where the employee formally declares their nonresident status, confirms they will not exceed the thirty-day threshold, and acknowledges that certain professions such as professional athletes, entertainers, and public figures are explicitly excluded from this exemption. It is critical to understand that this waiver is valid only for the specific calendar year indicated on the form, meaning a new form must be completed each year if the employee continues to work temporarily in Indiana. The completed document does not get mailed to the Indiana Department of Revenue; instead, it must be filed with and retained by the employer for their records in case of audit or inquiry.
How To File Indiana Form WH-4AFF
The filing process for this form is straightforward but unique compared to most tax documents. Once you have completed and signed the form, you must submit it directly to your Indiana employer. The employer is then responsible for keeping this affidavit on file with their payroll records. This form should never be mailed to the Indiana Department of Revenue. The employer uses this document as justification for not withholding Indiana state and county income taxes from your paycheck during your brief work period in the state.

How To Complete Indiana Form WH-4AFF
The form is structured as a declaration with multiple fields that must be filled out accurately to ensure compliance.
Calendar Year Designation
At the top of the form, there is a blank line following the phrase “for Calendar Year.” Enter the specific four-digit year for which you are claiming the exemption (for example, 2026). This waiver is only valid for that single calendar year.
Indiana Employer’s Name
In the first box on the left side of the employer information section, enter the full legal name of the Indiana-based company or organization that is employing you.
Employer TID Number
In the box on the right side of the same row, enter the employer’s Taxpayer Identification Number, which is typically the federal Employer Identification Number assigned by the IRS.
Employee Name
On the second row, enter your full legal name as it appears on official documents and tax records.
Social Security Number
In the box to the right of your name, enter your nine-digit Social Security Number. Do not use dashes or spaces.
Address
On the third row, enter your complete street address, including apartment or unit numbers if applicable.
City
In the next box to the right, enter the city where you reside.
State
Enter the two-letter abbreviation for the state where you are a legal resident (for example, OH for Ohio or IL for Illinois).
ZIP Code
In the final box on the address row, enter your five-digit ZIP code, or the extended ZIP+4 format if you know it.
Legal Resident State Declaration
The form contains a statement that begins “The employee swears to be a legal resident of the State of.” On the blank line provided, write the full name of the state where you are a legal resident.
Days Worked Prior To Completing Form
In the first bulleted attestation section, there is a blank line following “The employee has worked in Indiana for _____ days prior to completing this form.” Enter the number of days you have already worked in Indiana during the current calendar year before filling out this waiver. If this is your first day of work, enter zero.
Thirty-Day Limit Acknowledgment
The second bullet point confirms that you will not work in Indiana for more than thirty days during the entire calendar year, including work for any other employers. No entry is required here; this is a statement you are affirming by signing the form.
Indiana Residency Status
The third bullet confirms that you have not been an Indiana resident during the current calendar year and do not expect to become one. This is also an affirmation statement with no blank to fill.
Profession Exclusions
The fourth bullet lists specific professions that are not eligible for this waiver. You are affirming that you are not employed as:
- A professional athlete
- A professional sports team member
- A race team member
- A professional entertainer
- A public figure
No action is required here unless you fall into one of these categories, in which case you should not file this form.
Dual Capacity Work Acknowledgment
The fifth bullet addresses situations where you might work for the same employer in multiple capacities. If you have worked for this employer both as a traditional employee and also as an independent contractor (or in another non-employee role) performing substantially similar job duties, you must count all of those days toward the thirty-day limit. This is an acknowledgment statement with no blank to complete.
Consequences Of Exceeding The Thirty-Day Limit
The final section of attestations explains what happens if you work more than thirty days. The form states that:
- You will be subject to retroactive withholding to recover any taxes that should have been withheld earlier in the year.
- You will owe Indiana state and county income tax on all compensation earned in the state.
- You may face penalties for failure to remit estimated taxes.
These are acknowledgment statements requiring no entries.
Employee Signature
At the bottom of the form, you must sign your name on the line labeled “Employee Signature.” Your signature legally binds you to all the statements and acknowledgments made on the form.
Date
Immediately to the right of the signature line, enter the date you are signing the form. Use the standard month/day/year format.
Important Reminders
This form is valid only for the calendar year written at the top. If you work in Indiana again the following year and still qualify for the exemption, you must complete a new WH-4AFF for that year. Additionally, if at any point during the year you exceed thirty days of work in Indiana, you must immediately notify your employer so they can begin withholding taxes. Failure to do so can result in significant tax liabilities and penalties. Keep a personal copy of the completed form for your records, and ensure your employer retains the original in their files.