IRS Form 706-NA “United States Estate (and Generation-Skipping Transfer) Tax Return, Estate of nonresident not a citizen of the United States” is the estate tax return required for the estate of a deceased person who was a nonresident alien (NRA) of the United States at the time of their death.
It is used to calculate and report any U.S. estate tax liability that arises from the decedent’s U.S.-situated assets, such as real estate located in the U.S., certain business assets, and tangible personal property physically located in the U.S.
The executor or administrator of the estate must file Form 706-NA if the gross estate of the NRA, consisting of assets situated in the United States, exceeds the basic exclusion amount allowed for NRAs.
- The gross value of the decedent’s U.S.-situated assets must exceed $60,000. This threshold is not adjusted for inflation and is significantly lower than the threshold for U.S. citizens and residents ($13.61 million in 2024).
- Filing is required if the gross value exceeds $60,000, even if no tax is ultimately due after applying deductions or a tax treaty.
Form 706-NA Filing Deadline and Extensions
- The return must be filed, and any tax paid, within 9 months of the date of the decedent’s death.
- The executor may request an automatic 6-month extension of time to file by submitting Form 4768, “Application for Extension of Time to File a Return and/or Pay U.S. Estate Taxes,” on or before the original due date. This extends the filing deadline to 15 months after death.
Important: This extension is for filing only, not for payment of tax. Interest accrues on any unpaid tax from the original due date.
How Do You Complete Form 706-NA?
Step 1: Identify all assets considered situated in the United States
Common examples include:
- Real estate located in the U.S.
- Tangible personal property (art, cars, collectibles) physically located in the U.S.
- Stock of U.S. corporations (regardless of where the certificate is held).
- Debt obligations of U.S. persons or the U.S. government.
- Assets of a U.S. trade or business.
Step 2: Value the Assets
All U.S. assets must be valued at their fair market value (FMV) as of the date of death. Professional appraisals are often required for real estate, closely held business interests, and valuable personal property.
Step 3: Complete the Relevant Schedules
The form consists of several schedules. Key ones for NRAs include:
- Schedule A: Real Estate in the United States.
- Schedule B: Stocks and Bonds of U.S. issuers.
- Schedule C: Other U.S. assets (mortgages, notes, cash, etc.).
- Schedule D: Insurance on the decedent’s life is generally not includable unless payable to the estate or a U.S. business.
- Schedule F: Other Miscellaneous Property.
- Schedule P: Credit for State Death Taxes (requires documentation of payment).
- Schedule(s) Q: Credit for Tax on Prior Transfers (rarely applicable).
Step 4: Calculate the Taxable Estate and Tentative Tax
- Calculate the Gross Estate (total FMV of U.S. assets).
- Subtract allowable deductions (e.g., mortgages on U.S. real estate, administration expenses of the U.S. estate, losses, charitable deductions to U.S. entities).
- The result is the Taxable Estate.
- Compute the tentative tax using the unified rate schedule.
- Apply the unified credit. For an NRA, this credit is only $13,000, which shelters exactly $60,000 from tax.
Step 5: Apply Treaty Benefits (If Applicable)
The United States has estate tax treaties with many countries (e.g., the United Kingdom, Canada, Germany, Australia, France). These treaties can:
- Provide a higher exemption amount.
- Reclassify assets as non-U.S. situs.
- Allow a marital deduction for a noncitizen spouse.
You must attach a statement and relevant provisions of the treaty to the return to claim benefits.
Common Mistakes to Avoid with Form 706-NA
- Missing the Low Filing Threshold. Assuming the $60,000 threshold is per asset, not the total gross estate, is a critical error.
- Misclassifying Asset Situs. Incorrectly assuming foreign assets (like a foreign bank account or non-U.S. stock) are subject to U.S. estate tax, or vice-versa.
- Overlooking Treaty Benefits. Failing to analyze and apply a relevant estate tax treaty can result in overpaying tax.
- Incorrectly Valuing Assets. Using incorrect valuation dates or methods, especially for real estate, can lead to penalties.
- Ignoring State Estate/Inheritance Tax. Several U.S. states impose their own estate or inheritance taxes on non-resident decedents with property in that state (e.g., Washington, Oregon, Illinois, New York). These are separate from the federal return.
Penalties for Non-Compliance
- Failure to File: 5% of the tax due per month, up to 25%.
- Failure to Pay: 0.5% of the tax due per month, up to 25%.
- Valuation Understatement: A 20% penalty can apply if the value claimed is 65% or less of the correct value.
- Personal Liability for Executor: The executor can be held personally liable for unpaid taxes and penalties if they distribute assets before ensuring the tax is paid.
FAQs
The decedent owned a condo in Florida worth $300,000 but had a mortgage of $250,000. Is the gross estate $300,000 or $50,000 for the filing threshold?
For the filing threshold, you use the gross (full) fair market value before deductions. The gross estate is $300,000, which far exceeds the $60,000 threshold, so Form 706-NA must be filed. The mortgage is then deducted later on the return to arrive at the taxable estate.
The decedent held shares of Apple (a U.S. company) in a brokerage account in London. Are these shares included?
Yes. Stock of a U.S. corporation is always considered U.S.-situs property for NRA estate tax purposes, regardless of where the physical certificate or account is located. Its full value must be included in the gross estate.
What about the decedent’s U.S. bank account?
Yes. Cash deposits in U.S. financial institutions are U.S.-situs assets and must be included. This includes checking, savings, and brokerage cash balances.
Does a tax treaty with the decedent’s home country override the $60,000 threshold?
Potentially, yes. Many treaties provide a proportionate exemption amount—a much higher threshold tied to the ratio of U.S. assets to worldwide assets. For example, a treaty might grant a $5 million exemption, but if only 10% of the worldwide estate is U.S. assets, only $500,000 of U.S. assets would be shielded. You must analyze the specific treaty.
The surviving spouse is also a nonresident alien. Is there a marital deduction?
Under U.S. domestic law, there is generally NO unlimited marital deduction for a surviving spouse who is not a U.S. citizen. However, a Qualified Domestic Trust (QDOT) can be established to preserve the deduction, or an applicable estate tax treaty may provide marital relief. This is a highly complex area requiring professional advice.
Are there state-level taxes to worry about?
Yes, absolutely. Several states (e.g., Washington, Oregon, Illinois, New York, Massachusetts, Maryland) impose their own estate or inheritance taxes on property located within their borders, even for non-resident decedents. These are separate from the federal Form 706-NA, have different exemptions (often much lower), and must be filed with the state. This is a commonly overlooked pitfall.
Who can act as the executor and sign the Form 706-NA?
The executor or administrator appointed by a foreign court can act. If no one is appointed, any person in actual or constructive possession of the decedent’s U.S. assets may be required to file. The IRS can also designate a person. A non-resident executor may need to appoint a U.S. agent (often an attorney or CPA) to receive IRS communications.
How do we get a closing letter from the IRS?
After filing, the IRS will review the return and, if accepted, issue Letter 627, the “Estate Tax Closing Letter.” This is crucial proof that the estate has settled its federal tax obligations. Processing can take 9-12 months. You should request it via the IRS’s online portal or by phone.
What if we discover a U.S. asset after the return is filed?
You must file an amended Form 706-NA (a “superseding return”) to include the omitted asset and pay any additional tax and interest due. Failure to do so can result in penalties.
Form 706-NA addresses a complex area of U.S. tax law with a very low filing threshold. Executors for nonresident aliens must carefully identify U.S. assets, determine correct values, understand the limited deductions and credits, and investigate potential treaty relief. Due to the significant penalties and personal liability risks, engaging a tax professional with expertise in international estate taxation is highly advisable to navigate this process correctly.