International Estate Planning for Expats: What Happens When U.S. Assets Pass to Heirs Abroad

Most families think of inheritance as a question of ownership. Someone dies, the documents are produced and the assets pass. That picture leaves out an important question: when can the people who inherit actually use what they receive?

When US assets sit inside an international family, the transfer may involve US institutions and procedures alongside documents and advisers in other countries. Legal entitlement, tax compliance and practical access are related, but they are not identical.

Consider an illustrative case. An American executive lives in Vietnam, holds a US brokerage account and has family members living abroad. During life, the account is familiar and readily accessible to its owner. After death, the institution must establish who can give instructions and what the transfer requires. The family may have to answer questions it has never encountered before.

Why International Estate Planning Can Fail at the Point of Transfer

The plan may have been designed mainly from the owner's vantage point. The owner knows what exists, how it is titled and whom it should benefit. The surviving family may not know which assets pass by beneficiary designation, which require estate administration, who has authority to act or where the relevant records are kept.

Documents matter, but they do not perform the administrative work themselves. A will explaining the intended distribution is not necessarily the same as the authority or evidence an institution needs before acting.

The practical test is whether someone can carry the plan forward without having to discover the entire structure during bereavement.

Why US Assets Need a Specific Review

US estate-tax rules distinguish citizens and US domiciliaries from nonresident noncitizens. Estate-tax residence is based on domicile and is not simply the income-tax residence test. The Form 706 instructions and the IRS international estate-tax guidance explain the distinction.

The relevant questions include the decedent's status, the legal location and type of assets, ownership arrangements, lifetime gifts and any applicable treaty. A beneficiary's foreign nationality or address does not, by itself, replace the decedent's estate-tax regime with the US$60,000 nonresident filing threshold. Non-citizen spouses and particular transfers can nevertheless raise additional issues.

For US citizens and domiciliaries, the federal basic exclusion for deaths in 2026 is US$15 million, with gifts and other rules affecting the calculation. Nonresident noncitizens have a different regime. See the Form 706 instructions and IRS guidance on nonresident estates.

Tax exposure is only one part of the review. An estate that owes no federal estate tax can still require documents, institutional review and time.

Three Separate Questions Before Assets Become Usable

1. Who has authority?

Identify the route by which each asset passes. A beneficiary designation, survivorship arrangement, trust and estate administration can involve different decision-makers and evidence.

Ask the institution for its current death-notification and inheritance procedures. Establish which documents it needs, who must sign, whether copies are acceptable and which team handles the transfer. Do not assume that a relative with access to the owner's password has authority to continue operating the account.

If documents come from outside the United States, confirm translation, certification and recognition requirements with the receiving institution and the relevant lawyer. A notarial act, apostille and Medallion signature guarantee serve different purposes and are not interchangeable solutions.

2. Which tax procedures apply?

Determine the estate's filing requirements before submitting forms or requesting certificates. IRS procedures distinguish nonresident US citizens from nonresident noncitizens.

A transfer certificate is not required for every inheritance. The IRS guidance expressly provides an exception for property administered by an executor or administrator appointed, qualified and acting within the United States. It also explains the procedures where an estate-tax return is not required; filing an unnecessary Form 706-NA can delay matters.

Do not confuse an estate-tax closing letter with a transfer certificate. The IRS confirms that they are different documents.

3. What will the custodian permit?

Ask whether the intended heir can maintain an appropriate account, receive the assets in kind or must use another transfer route. Confirm this for the actual country of residence, account type and assets rather than relying on a general description of an “international account.”

Institutional terms matter alongside legal entitlement. For example, the Schwab One Account Agreement addresses restrictions in beneficiary disputes and additional international-account conditions. That is an example of why the current agreement and the institution's inheritance team should be consulted, not a statement that every custodian follows the same process.

The Family's Timeline May Be Shorter Than the Estate's

Housing costs, school fees, travel and living expenses continue while documents are assembled. A portfolio may contain readily traded securities but still be temporarily inaccessible to the people who need the money.

There is no universal inheritance-processing time. As one specific illustration, the IRS currently states 12–18 months to process the affidavit and supporting documents under Part B of its nonresident noncitizen transfer-certificate guidance, counted from receipt of all necessary documentation. That is not an estimate for every estate or every account transfer.

Build a liquidity plan that does not depend on every transfer completing at the earliest possible date. Decide which legally accessible funds would meet immediate commitments and how the person managing the household would reach them.

Diversification Does Not Resolve Every Jurisdictional Problem

A brokerage account may hold investments from many countries while still relying on one institution and one account-administration process. Investment diversification and the practical transfer route are different dimensions of the plan.

A trust, offshore platform or holding company is not automatically an improvement because it sounds more international. Compare the proposed arrangement with the current one: authority, tax, costs, reporting and the eventual beneficiary's ability to operate it.

Cross-Border Estates Need Coordination

Lawyers, tax advisers and investment professionals may each have a defined role. The family still needs to know who is coordinating the sequence of work.

Document the responsible people and dependencies. Which adviser establishes authority? Who inventories the assets and obtains valuations? Who handles tax filings? Who communicates with the custodian? Which tasks need to finish before another can start?

The objective is to avoid leaving a grieving spouse or child to connect all the pieces without a clear starting point.

Review the Estate From the Heir's Perspective

Ask a practical question: if the owner died tonight, who would contact each institution tomorrow, and what could that person produce as evidence of authority?

A useful review identifies the accounts, ownership, beneficiary arrangements, original documents and adviser contacts. It also checks the family's immediate cash needs, language requirements and the people who would organise the work.

Test four questions:

1. Who can give legally effective instructions after death?
2. What evidence will each institution need, and can it be obtained from where the family lives?
3. How long can the family meet essential commitments without these assets?
4. Who is responsible for coordinating the transfer?

Cleaner records, updated beneficiary arrangements, an identified coordinator and adequate accessible liquidity can be more useful than adding a complex structure without a clear purpose. Our wills and estate-planning work in Vietnam starts with that practical financial picture.