Tax & estate planning · South Africa
Offshore Estate Planning: Who Can Inherit, Act and Pay?
For South Africans with foreign assets, estate planning must reconcile three things: who is entitled to inherit each asset, who has authority to administer it, and which taxes and cash needs arise before it can be released. A foreign account, a beneficiary nomination or a second will does not answer all three. Start with the exact legal holding and the relevant countries, then coordinate the documents and funding.
“We have R5 million offshore” is enough for a rough balance sheet. It is not enough for an executor. Direct shares in a US corporation, units in a foreign fund, a foreign property and a policy issued by an insurer may have very different succession and tax treatment, even when all four appear on dollar statements.
In this article
Build the asset map before the will map
A useful foreign-asset register records more than the platform name. For each holding, capture the legal owner, instrument or policy identifier, issuer or fund domicile, custodian, account terms, value and currency. Then record the person's relevant citizenship, domicile and residence history separately. These concepts are not interchangeable across tax systems.
| Holding shown on the statement | Question the label leaves unanswered |
|---|---|
| US company shares through a non-US broker | Does the issuer's incorporation make the shares US-situated for estate tax? |
| A foreign fund investing in US companies | What fund interest does the investor own, and how is that interest classified? |
| A South African feeder with foreign underlying investments | Is the deceased's legal holding the local fund units rather than the underlying foreign securities? |
| A foreign-currency policy | What do the actual policy and beneficiary provisions provide on death? |
| Property abroad | Which succession, registration and local tax rules apply to that property? |
This is a document request, not a declaration that any row is tax-free. A non-US platform address does not by itself remove US estate exposure. Equally, a fund holding US shares does not mean its investor directly owns each underlying share. The legal interest must be identified before applying the rule.
The direct-offshore versus rand-feeder article explains that ownership distinction during life. Here the question is what happens when the owner dies.
One death can involve several tax systems
For a deceased person ordinarily resident in South Africa, the estate-duty inquiry generally includes worldwide property. Foreign location is not, by itself, an exclusion. SARS's estate-duty guidance explains that foreign death taxes can overlap with South African estate duty and that treaty or domestic relief may be relevant.
Relief does not mean the executor can ignore the second jurisdiction. Eligibility, asset classification, evidence and the mechanism for obtaining relief have to be established. Nor does relief from duplicate death tax necessarily remove filing costs or a temporary need to fund tax before the final position is settled.
The general South African estate-duty calculation is covered in How Much Estate Duty Will Your Family Pay?. A foreign-estate review adds jurisdiction-specific work to that calculation; it does not replace it.
The US $60,000 figure is easily misread
The IRS's nonresident estate guidance states that shares of corporations organised under US law are US-situated, including where held through a nominee. Certain other assets have exclusions. For an estate of a nonresident who was not a US citizen, US-situated assets above $60,000 generally trigger Form 706-NA filing; the detailed filing test includes specified prior gifts.
That figure is not a universal personal tax-free offshore allowance. A filing requirement and the final tax payable are different questions. Citizenship, estate-tax domicile, assets and applicable treaty provisions can change the analysis. The Form 706-NA instructions list South Africa among countries with death-tax treaties. A specialist must establish the relief that actually applies; multiplying everything over $60,000 by a headline top rate is not an adequate estate calculation.
The instructions generally require filing within nine months of death, unless an extension is granted, and separately address payment timing. Do not assume a filing extension also settles when tax must be paid. These are administrative deadlines, not a prediction of when the estate will be released.
Consider an invented account at a non-US broker containing $80,000 of direct US corporation shares and $120,000 of interests in a non-US fund. Assume the deceased was neither a US citizen nor US-domiciled, with no relevant prior gifts. Under the domestic starting rule, the identified shares alone raise the filing question because they exceed $60,000. The broker's address does not remove that issue. But treating the entire $200,000 as direct US shares would skip the separate classification of the fund interest. The executor's next request is for that fund's legal documents and a treaty assessment, not a tax bill calculated from the platform total.
UK history now needs a residence timeline
From 6 April 2025, long-term UK residence became central to the scope of UK inheritance tax on overseas assets. HMRC's current guidance explains the general 10-out-of-20 prior-tax-years test and transitional exceptions. Its technical manual explains how exposure can continue after leaving, generally for three to ten tax years depending on the history.
An old note saying “non-UK domicile” is therefore not enough to settle today's worldwide scope. Returning to South Africa does not necessarily end that scope immediately. Conversely, the maximum ten-year tail does not apply identically to everyone. UK assets may also remain relevant for someone outside the worldwide test.
For a family member who has lived in Britain, a dated residence history is a useful part of the estate file. The legal reviewer must also check treaty interaction and transitional rules. A short internet summary cannot determine a person's status from their current address.
Authority is a separate map
Being named executor in a will is not the same as being able to instruct every foreign custodian immediately. A custodian may require proof of appointment, authenticated documents, tax paperwork or a local process. The required route depends on the jurisdiction and the asset.
The South African side illustrates the distinction. The Master's foreign-estates guidance states that foreign letters of executorship or probate alone do not authorise dealings with South African estate assets. Authority from a South African Master is required; certain foreign appointments may be signed and sealed through the prescribed process. That is an inbound South African rule, not a claim that every foreign country uses the same procedure.
Ask each provider to describe its death-claim process in writing while the owner can still clarify the account. The useful answer names the documents, the person entitled to instruct, any tax-clearance requirement, and how the provider treats competing instructions. “Our platform handles it” is too vague to serve as an executor's plan.
A second will can help, but coordination is the work
A foreign will may be useful where local assets and legal processes warrant it. There is no reliable rule that every offshore investment requires a separate will, or that one worldwide will is always sufficient. The estate lawyer needs the asset register and the relevant jurisdictions to assess the alternatives.
There is a reasonable case for fewer documents: one coherent worldwide will may reduce contradictory instructions where the relevant jurisdictions accept it and administration remains workable. Separate documents may instead simplify a particular local process. The question is which arrangement covers the assets reliably, not which produces the largest number of wills. UK government will guidance specifically identifies overseas property and a permanent home outside the UK as reasons to obtain legal help; it does not settle the design for every South African estate.
If there are multiple wills, the people drafting them need to review the whole set. Their scopes, revocation provisions, executor powers, residual gifts and treatment of debts and taxes must work together. A later document intended only for foreign property can cause damage if it purports to revoke arrangements that were meant to remain.
The practical test is an uncovered-or-double-covered asset review. For each holding, identify which document deals with it and which professional has checked that conclusion. Then consider a new account opened after the wills were signed: does it fall within a clear residual provision, or has the family relied on a list that is now incomplete?
This record is a briefing tool, not substitute will wording. It also cannot resolve local restrictions on succession, family claims or joint-ownership rights. Those are reasons for jurisdiction-specific review before signing documents.
The survivor's cash bridge
Suppose the surviving spouse has R350,000 in an account legally accessible in their own right. Their net monthly spending gap after continuing income is R35,000. Immediate expenses of R70,000 must come from that account. All figures are invented and exclude investment growth, inflation and additional taxes.
There is also a substantial foreign investment in the deceased's estate. Its value does not enter the following calculation because the date of access is unresolved.
| Assumed period before other money is available | Monthly-gap funding | Immediate expenses | Total cash needed | Position against R350,000 |
|---|---|---|---|---|
| Six months | R210,000 | R70,000 | R280,000 | R70,000 left |
| Nine months | R315,000 | R70,000 | R385,000 | R35,000 short |
| Twelve months | R420,000 | R70,000 | R490,000 | R140,000 short |
The apparent ten months of cover, R350,000 divided by R35,000, falls to eight months after immediate expenses. None of the three assumed delays is a forecast of probate duration. They test whether the household's cash plan depends on a release date it cannot control.
The survivor funding example above keeps accessible money separate from estate wealth. If the account were instead frozen or belonged solely to the deceased, the assumption would fail and the calculation would need to be rebuilt. A beneficiary nomination also needs its own payment conditions checked before its proceeds are counted as immediately available.
This is why the size of an estate can conceal a funding problem. A family may be solvent in an eventual distribution and still struggle with near-term bills. It is also why buying another product is not automatically the answer: existing ownership, accessible reserves, liabilities and documented payment rights must first be reconciled.
The brief that makes a specialist review useful
The executor and cross-border advisers need a common file: current statements and legal identifiers; the ownership and custody agreements; all wills and beneficiary provisions; citizenship, domicile and residence history; approximate values and liabilities; and the household cash bridge. Sensitive account credentials should be handled through a secure arrangement, not placed in a publicly accessible will or emailed as an ordinary attachment.
Ask for separate conclusions on succession, appointment authority, tax filings and payments, relief claims, and the likely document sequence. Where timing is unknown, record it as unknown and test cash requirements around it. That is more useful than a single total labelled “offshore estate tax”.
ClearGauge's judgement is that the financial plan should reconcile the specialist conclusions with the survivor's actual obligations. A Financial Clarity Review may be relevant when those obligations and existing holdings have not been joined up. It does not replace legal drafting or jurisdiction-specific tax advice. This article has not assessed your residence, documents or assets and does not recommend a transfer, wrapper or estate structure.
Sources and as-of notes
Reviewed 6 September 2026. IRS Form 706-NA instructions are the September 2025 version; UK guidance reflects the rules introduced 6 April 2025 and the current HMRC manual. SARS and the Master provide the South African starting points. The US filing discussion identifies treaty relevance without claiming an individual treaty exemption. All links are provided alongside the relevant claims. The three-map method, asset questions and cash scenarios are original educational work; foreign tax amounts and administration durations are not estimated.