Indiana Estate Tax Return Required Forms

When someone passes away in Indiana, the executor or personal representative has a legal duty to file the right paperwork with the state. Getting the forms wrong or missing one entirely can delay the settlement of the estate and lead to penalties. If you're handling an estate in Indiana, knowing which forms to file for estate tax purposes saves time, reduces stress, and helps you avoid costly errors.

Does Indiana Have Its Own Estate Tax?

Indiana repealed its state-level estate tax in 2013. However, estates of Indiana residents may still owe federal estate tax if the estate's value exceeds the federal exemption threshold, which is $13.61 million per individual for 2024. So when people search for Indiana estate tax return forms, they're usually referring to the federal estate tax return (Form 706) and supporting documents that Indiana residents must file with the IRS not a separate state return.

That said, Indiana does collect an inheritance tax for deaths occurring before January 1, 2013. If you're settling a very old estate, different rules and forms apply. For most current estates, the focus is on federal filing requirements.

What Is the Main Federal Form for Indiana Estate Tax Filings?

The primary form is IRS Form 706, United States Estate (and Generation-Skipping Transfer) Tax Return. This form reports the total value of a decedent's estate and calculates any federal estate tax owed. You must file Form 706 if the gross estate exceeds the applicable exclusion amount.

Form 706 itself is lengthy often 20+ pages and includes numerous schedules. The schedules you complete depend on the types of assets in the estate. You can find the official form and instructions on the IRS website.

Which Schedules Come With Form 706?

Not every estate needs every schedule, but here's what's included and when each applies:

Schedule A Real Estate: Lists all real property owned by the decedent, including Indiana farmland, homes, or commercial property.
Schedule B Stocks and Bonds: Reports publicly traded securities, mutual funds, and bonds held at death.
Schedule C Mortgages, Notes, and Cash: Covers bank accounts, promissory notes, CDs, and cash on hand.
Schedule D Insurance on the Decedent's Life: Reports life insurance proceeds payable to the estate or that the decedent held incidents of ownership over.
Schedule E Jointly Owned Property: Used for property held in joint tenancy, tenancy by the entirety, or community property.
Schedule F Other Miscellaneous Property: Covers personal belongings, vehicles, artwork, collectibles, and anything not reported on other schedules.
Schedule G Transfers During Decedent's Lifetime: Reports gifts made within three years of death and certain retained interests in trusts.
Schedule H Powers of Appointment: Applies if the decedent held a general power of appointment over any property.
Schedule I Annuities: Reports annuity contracts and retirement accounts payable to the estate.
Schedule J Funeral Expenses and Expenses Incurred in Administering the Estate: Claims deductions for funeral costs, executor fees, attorney fees, and court costs.
Schedule K Debts and Mortgages of the Decedent: Lists outstanding debts, medical bills, and mortgages owed at death.
Schedule L Net Losses and Expenses: Used to claim losses from casualty, theft, or selling estate assets at a loss.
Schedule M Bequests to Surviving Spouse: Reports the marital deduction for property passing to the surviving spouse.
Schedule O Charitable Transfers: Documents bequests to qualifying charitable organizations.
Schedule P Credit for Foreign Death Taxes: Used if foreign estate taxes were paid on property located outside the U.S.
Schedule R-1 Generation-Skipping Transfer Tax: Applies if assets pass to grandchildren or more remote descendants.
Schedule U Qualified Domestic Trust (QDOT): Required when the surviving spouse is not a U.S. citizen.

When preparing these schedules, accurate documentation is essential. Our guide on estate tax documentation for high-value estates covers what records you need to gather before filling them out.

Are There Other Federal Forms an Indiana Executor Might Need?

Beyond Form 706, several related forms may apply depending on the circumstances:

Form 706-NA: For non-resident aliens who owned property in Indiana or elsewhere in the U.S.
Form 709: The United States Gift (and Generation-Skipping Transfer) Tax Return, filed if the decedent made taxable gifts during their lifetime that weren't previously reported.
Form 1041: The estate income tax return, filed for income the estate earns after the decedent's death (rental income, interest, capital gains from asset sales, etc.).
Form 1310: Statement of Person Claiming Refund Due a Deceased Taxpayer, used when claiming a federal tax refund on behalf of the decedent.
Form 56: Notice Concerning Fiduciary Relationship, filed to notify the IRS that you're acting as the estate's representative.

What About Indiana Inheritance Tax Forms for Pre-2013 Deaths?

For deaths that occurred before January 1, 2013, Indiana imposed an inheritance tax. The required form was Indiana Form IH-6 (Inheritance Tax Return). This form reported the value of property passing to each beneficiary and calculated the tax based on the beneficiary's relationship to the decedent.

If you're still handling an estate from before the repeal, the Indiana Department of Revenue may require Form IH-6 along with supporting schedules. These older estates often surface when property titles were never properly transferred. Our article on the estate settlement process during probate explains how these filings fit into the broader timeline.

When Is the Federal Estate Tax Return Due?

Form 706 is due nine months after the date of death. You can request a six-month extension using Form 4768 (Application for Extension of Time to File a Return and/or Pay U.S. Estate (and Generation-Skipping Transfer) Taxes). The extension gives you more time to file, but it does not extend the time to pay estimated tax is still due at the nine-month mark.

What Common Mistakes Do Executors Make With These Forms?

Handling estate tax forms is one of the more complicated parts of estate administration. Here are errors that show up frequently:

Underreporting asset values: The IRS requires fair market value at the date of death, not the purchase price or assessed value. Real estate appraisals and brokerage statements are critical.
Missing the filing deadline: Nine months goes by fast when you're managing grief, probate, and family dynamics. Missing the deadline triggers penalties and interest.
Filing the wrong form: Using Form 706 when Form 706-NA applies (or vice versa) creates problems down the road.
Forgetting to report lifetime gifts: Gifts made within three years of death get pulled back into the gross estate under the "three-year rule." Executors sometimes overlook these.
Not electing portability: If the deceased spouse's estate doesn't use the full federal exemption, the surviving spouse can claim the unused portion but only if Form 706 is filed, even when no tax is owed. Many families miss this, leaving hundreds of thousands in exemptions on the table.
Skipping professional valuations: For real estate, business interests, or art collections, a qualified appraisal is not optional it's expected by the IRS.

If you want a deeper look at the filing process itself, our filing instructions for executors walk through each step in order.

How Should Executors Prepare the Required Documentation?

Before you sit down to fill out any forms, gather these items:

Certified death certificate (you'll need multiple copies)
The decedent's will and any trust documents
Prior year income tax returns (helps identify assets and accounts)
Real estate deeds and recent appraisals
Brokerage and bank account statements as of the date of death
Life insurance policy documents
Funeral and burial invoices
Outstanding debt statements (credit cards, mortgages, medical bills)
Record of gifts made in the three years before death
Prior filed gift tax returns (Form 709)

Organizing these documents early prevents delays. Our checklist for preparing estate settlement documents in Indiana can help you stay on track.

Do You Always Need a Tax Professional to File?

There's no legal requirement to hire a CPA or tax attorney, but federal estate tax returns are technical and the stakes are high. If the estate includes business interests, property in multiple states, complex trusts, or assets near the exemption threshold, professional help is strongly recommended. A mistake on Form 706 can trigger an audit or leave significant tax savings unclaimed.

Practical Checklist: Indiana Estate Tax Return Forms

Confirm whether the estate exceeds the federal exemption threshold ($13.61M in 2024)
Determine if the decedent was a U.S. citizen or resident alien (affects which form to file)
Gather all asset documentation deeds, statements, policies, appraisals
Identify any taxable gifts made within three years of death
Complete the applicable schedules on Form 706
Calculate the marital and charitable deductions if applicable
Evaluate whether portability of the unused exemption should be elected
File Form 4768 if you need an extension beyond nine months
File Form 1041 for any income earned by the estate after death
Keep copies of everything submitted for at least three years

Next step: If you haven't started yet, begin by pulling the decedent's last three years of income tax returns and insurance policy documents. These two sources alone will point you to most of the assets and accounts you need to report. Then work through the schedules one at a time don't try to complete the entire form in one sitting.