Free educational guideNative American and Alaska Native 4 min read

IIM accounts, land income and what happens to trust land when you die

If you own an interest in trust land or receive money through an Individual Indian Money (IIM) account, federal rules — not state rules — control what happens to those assets when you die. This guide explains how IIM accounts work, why fractionation matters, and what you can do now to protect your family.

Explained in plain English

IIM accounts, land income and what happens to trust land when you die — explainer · Educational only — MoneyFAQ is not a lender.

Key takeaways

IIM accounts are federal trust accounts managed by BTFA, funded by income from trust land activities, and must be claimed with a current address on file.
Trust land and IIM funds pass under federal law — not state probate — through the BIA and an Interior Department judge under AIPRA.
Without a will, the 'single heir rule' under AIPRA can send a small land interest to just one person, leaving other family members with nothing.
A valid will covering trust property gives you real choices, but it must be written with knowledge of AIPRA — confirm details with a qualified attorney or your tribal nation's office.

What is an IIM account?

An Individual Indian Money (IIM) account is a trust account held on your behalf by the U.S. Department of the Interior. It is managed by the Bureau of Trust Funds Administration (BTFA). Money flows into your IIM account from activity on trust land you own an interest in — things like leases, grazing permits, timber sales, rights-of-way, and oil, gas, or mineral royalties. You may also receive per-capita or judgment fund distributions, or inherit funds from a family member's IIM account.

You can check your balance, update your mailing address, set up direct deposit or a debit card, and request withdrawals by calling the Trust Beneficiary Call Center at 1-888-678-6836 or by visiting a BTFA or Bureau of Indian Affairs (BIA) field office.

The 'whereabouts unknown' problem

Thousands of IIM accounts sit untouched because BTFA has no current address for the owner. If you have moved — even once — your funds may be waiting for you. Search the online list yourself, and ask older relatives to check too. Updating your address is free and takes only a few minutes.

Understanding fractionation

Over generations, allotted trust land passes to all heirs equally. This means one parcel can end up with hundreds or even thousands of co-owners, each holding a tiny share. Very small shares earn very little income. The Land Buy-Back Program for Tribal Nations, which came out of the Cobell settlement, let willing sellers sell fractional interests back — but that program ended in 2022. Your tribal nation may still have its own buyback or consolidation program. Ask your tribe's realty office for details.

How trust land and IIM funds pass when you die

This is one of the most important differences from the advice most Americans read. Trust land and IIM account funds do NOT go through your state's probate court. Instead, the BIA prepares the case and a federal judge in the Interior Department's Office of Hearings and Appeals decides who inherits, under the American Indian Probate Reform Act (AIPRA, in effect since 2006) — unless your tribe has an approved tribal probate code.

Federal probate can take a very long time. Planning ahead protects your family.

What happens without a will under AIPRA

If you die without a valid will, AIPRA's default rules apply, and they surprise many families:

A surviving spouse generally receives a life estate in the trust land.
If your interest in a parcel is 5% or more, it passes equally to your eligible children.
If your interest is less than 5%, the 'single heir rule' applies: it goes to just one person — typically your oldest eligible child, then grandchild, then great-grandchild. If no one qualifies, it may go to your tribe.

That means siblings can inherit nothing from a small interest, even if that feels unfair to your family.

What you can do with a valid will

A will gives you real choices. You can leave trust land in trust to any lineal descendant, any co-owner of the parcel, any Native American person, or your tribal nation. Leaving trust land to a non-Native person who is not a descendant can take that land out of trust or limit them to a life estate — a significant loss. Your will must also name who receives your IIM account funds; there is no simple beneficiary form like a bank account has.

Practical steps to take now

Request your ITI (Individual Trust Interest) report from BTFA or the BIA realty office. It lists every interest you own.
Write a will that covers trust property specifically. Work with a lawyer, a free Indian wills clinic, or a legal aid program that knows AIPRA.
Keep family records — birth certificates, marriage records, tribal enrollment documents. The BIA must prove who your heirs are.
If a family member dies, report the death to your BIA agency promptly to start the federal probate process.
Confirm everything with your own tribe's office or the federal agency listed above. Rules vary across all 574 federally recognized tribes, and details change.

This guide is education only — not legal, tax, or financial advice. For your specific situation, contact a qualified attorney, your tribal nation's legal services, or the BIA.

What this is

An IIM account is a federal trust account that holds money earned from your interest in trust land — things like lease payments, royalties, and timber sales. It is managed by the Bureau of Trust Funds Administration (BTFA), part of the U.S. Department of the Interior. When you die, your IIM funds and trust land follow federal rules under the American Indian Probate Reform Act (AIPRA), not your state's probate system.

Why it matters

Most general financial advice about wills, beneficiaries, and inheritance does not apply to trust land or IIM accounts. The federal rules are different — and some of them, like the 'single heir rule,' can produce outcomes your family does not expect. Federal probate can also take a long time, so planning ahead matters for the people you love.

What it means for you

If you own any interest in trust land — even a very small one — or if you receive IIM account payments, you may need a will that specifically addresses those assets. Without one, AIPRA's default rules decide who inherits, and that may not match your wishes. Rules vary across the 574 federally recognized tribes, so always confirm the details with your own tribe's office or the BIA.

What to do next

Start by calling the Trust Beneficiary Call Center at 1-888-678-6836 or visiting a BIA field office to request your ITI (Individual Trust Interest) report and confirm your address is current. Then connect with a lawyer, a free Indian wills clinic, or a legal aid program experienced in AIPRA to create a will that covers your trust property. Keep your family records — birth, marriage, and enrollment documents — organized and accessible, so the BIA can identify your heirs. If a family member passes away, report the death to your BIA agency right away to start the federal probate process.

In simple words

If you own trust land or have an IIM account, federal law — not your state — decides who gets those assets when you die. Writing a will that follows those federal rules is one of the most important things you can do for your family.

Helpful tip

Even if you think your IIM balance is small, search the BTFA 'whereabouts unknown' list online for your name and ask older relatives to do the same — unclaimed funds may be waiting.

Watch out

Be cautious of anyone outside the BIA or BTFA who offers to 'help' you access your IIM account for a fee — this is a common scam targeting trust account holders. Always contact BTFA directly at 1-888-678-6836 or through your BIA field office.

#iim account#trust land#aipra#federal probate#fractionation#native american estate planning