Indiana Form IN-40PA, also known as the Indiana Post-liability Allocation Schedule, is used by taxpayers to request relief for part of their tax liability in cases where they are not responsible for all or part of a joint tax liability. Specifically, this form is designed for spouses who need to allocate certain income, deductions, credits, and other relevant tax information between them on a joint tax return. If a spouse has a tax liability reported on a joint return but is not fully liable for it, this form helps determine which portions of income, exemptions, deductions, and credits are allocated to the spouse requesting relief. It is a vital tool for fair allocation of tax responsibilities when one spouse is not fully responsible for the tax burden of the other. Taxpayers must submit supporting documentation, including income tax returns and W-2 forms, for the claim to be processed.
How to File Indiana Form IN-40PA
To file Indiana Form IN-40PA, follow these steps:
- Complete the Form: Fill in all the necessary sections of the form, including your personal details, income breakdown, and tax information.
- Attach Required Documents: Include your federal tax return, W-2s, and any relevant statements or letters explaining the tax situation.
- Submit the Form: You can mail the completed form to the Indiana Department of Revenue or fax it as instructed on the form.
- Wait for Processing: Once submitted, the Department of Revenue will review the claim and process the relief request. The agency will determine the final tax liability for the spouse requesting relief.

How to Complete Indiana Form IN-40PA: Line-by-Line Instructions
Part 1 – Information About the Joint Tax Return for Which This Claim Is Filed
Line 1: Name and Social Security Numbers of Both Spouses
- Enter the name and Social Security number of both spouses exactly as they appear on the tax return. The spouse requesting relief should be checked in the appropriate box.
Line 2: Current Home Address
- Provide the full street address, city, state, and ZIP code of the spouse requesting relief.
Line 3: Is the Address on Your Joint Return Different?
- Check “Yes” or “No” depending on whether your address on the joint return differs from the address you just entered in Line 2.
Part 2 – Allocation Between Spouses of Items on the Joint Indiana Individual Income Tax Return
Line 4: Income
- Allocate the income between both spouses. This includes wages and any other types of income earned by each spouse. For joint income, like interest from a joint bank account, allocate the amount as you see fit. Ensure that all income shown on the joint return is correctly allocated.
- 4a. Wages: Allocate each spouse’s wages.
- 4b. Other Income: Specify other types of income for each spouse, such as self-employment income or rental income.
Line 5: Adjustments Claimed on Federal Return
- List each spouse’s separate adjustments, such as IRA deductions, from the federal tax return. Allocate the other adjustments accordingly.
Line 6: Indiana Tax Add-Backs
- Allocate each spouse’s share of tax add-backs as shown on Schedule 1/B. Identify each item using the appropriate code numbers.
Line 7: Indiana Deductions
- Allocate each spouse’s share of deductions from Schedule 2/C. Again, use the appropriate code numbers to identify each deduction.
Line 8: Number of Exemptions
- Allocate the exemptions claimed on the joint Indiana return to each spouse. This should reflect how the exemptions would have been divided had separate returns been filed. Use whole numbers (e.g., 1 exemption for one spouse, 2 exemptions for the other).
Line 9: Withholding Credits
- Allocate the state and county tax withheld from each spouse’s income as shown on W-2s, 1099-Rs, and similar documents. Attach copies of these forms to the schedule for verification.
Line 10: Credits
- Allocate Indiana credits, such as the earned income credit, to the spouse who is responsible for the dependent exemption. All other credits should be divided according to each spouse’s interest in them.
Line 11: Payments
- Allocate any joint estimated tax payments. These are typically divided based on the responsibility for the income that generated the payments.
Part 3 – Signature Area
Line 12: Signature of Spouse Requesting Relief
- The spouse requesting relief must sign and date the form. Also, include a phone number for follow-up contact.
Line 13: Preparer’s Signature
- If someone other than the taxpayer prepares the form, the preparer must sign and date the form. The preparer should also check the box if they are self-employed.
Additional Notes:
- Required Attachments: Attach the following documents to the form:
- Your federal income tax return (Form 1040 or 1040-SR).
- All W-2 forms and any other forms showing state/county income tax withheld.
- A detailed letter explaining both spouses’ income, deductions, credits, and any other relevant information.
- A copy of the Indiana tax return and all schedules for the applicable tax year.
- Mailing and Fax Information: Send the completed claim to:
- Mail: Indiana Department of Revenue, Returns Processing and Operations, P.O. Box 7207, Indianapolis, IN 46207-7207
- Fax: 317-974-1605
- Processing Time: The Indiana Department of Revenue will calculate the revised liability for the spouse requesting relief after reviewing the submitted documents.