Inheritance tax, also called estate tax, succession duty, or death duty in various jurisdictions, applies to the transfer of property from a deceased person's estate to heirs and beneficiaries. Jewellery is included in the assessable estate in most jurisdictions and is subject to valuation, declaration and (where applicable) tax payment as part of estate administration. The treatment varies substantially across jurisdictions, and the practical implications for jewellery owners and heirs depend significantly on the deceased's domicile, the heirs' domicile, the location of the jewellery, and the structure of any estate-planning arrangements in place.

The general framework

Inheritance tax operates under three principal models internationally:

• Estate tax: Tax assessed on the deceased's estate as a whole, paid by the estate before distribution to heirs. The United States federal estate tax operates on this model, with various states applying additional state-level taxes.
• Inheritance tax: Tax assessed on the recipient (the heir) on the value received, with rates that may vary based on the heir's relationship to the deceased. Many European jurisdictions including Germany, France, Italy and Spain operate primarily on this model.
• Capital gains step-up regimes: Some jurisdictions (notably Australia, with its capital gains tax framework) treat inheritance not as a separate tax event but as a step-up in cost basis, with capital gains tax becoming relevant only on subsequent sale by the heir.

Several major jurisdictions, including most of the Commonwealth countries other than the UK, do not impose any direct inheritance tax. Canada, Australia, New Zealand and several others have eliminated inheritance tax in favour of capital-gains-based treatment of estate transfers. Among countries that do impose inheritance tax, rates vary widely, from low single digits to over 50 percent in certain top brackets in jurisdictions including Japan, Belgium and France.

Jewellery valuation for inheritance tax purposes

Inheritance tax assessment of jewellery requires valuation, and the valuation standard typically used is fair market value at the date of death (or, in some jurisdictions, an alternate valuation date six months after death, where the tax base would be lower). Fair market value is generally defined as the price a willing buyer and willing seller would agree to in an arm's length transaction, with neither under compulsion. For jewellery, this typically means the secondary-market or estate-sale value rather than the retail replacement value, and the difference can be substantial (estate-sale values are often 20 to 50 percent of retail replacement values for most jewellery, with smaller discounts for top-tier pieces with strong secondary markets).

The valuation is typically performed by a qualified appraiser engaged by the estate's executor or administrator. In the United States, the IRS standard requires a qualified appraisal performed by a qualified appraiser for jewellery items above certain thresholds (currently $5,000 per item for income-tax charitable-contribution purposes; the threshold for estate-tax purposes is at the discretion of the IRS but qualified appraisal is typically expected for any significant value). The American Society of Appraisers, the International Society of Appraisers and the National Association of Jewelry Appraisers maintain accredited-appraiser networks whose work is generally accepted by the IRS and other tax authorities.

For high-value pieces, comparable auction sales records are the primary valuation reference. Christie's and Sotheby's published catalogues provide auction-result data that supports estate-tax valuation work. For named historic pieces, individual valuation by specialists may be required, and the executor may need to negotiate with the tax authority on the appropriate value.

U.S. federal estate tax

The U.S. federal estate tax applies to estates with combined assets above the unified credit exemption, which for 2025 is approximately $13.99 million per individual ($27.98 million per married couple, with portability of the unused exemption to a surviving spouse). Estates below the exemption pay no federal estate tax; estates above the exemption pay tax at marginal rates rising to 40 percent on amounts above $1 million over the exemption. The current exemption levels are scheduled to revert to approximately half their current values in 2026 absent legislative action, which would substantially expand the number of estates subject to federal estate tax.

State-level estate taxes apply in approximately twelve U.S. states (including Massachusetts, New York, Washington, Oregon, Connecticut, Maine, Maryland, Minnesota, Rhode Island, Vermont, Hawaii, and Illinois, as of recent legislation, with thresholds and rates varying). Several states also impose inheritance taxes, applied to recipients rather than to the estate; Pennsylvania, New Jersey, Iowa, Kentucky, Maryland and Nebraska have or have recently had inheritance-tax provisions.

Jewellery in the U.S. estate-tax context is fully includable in the gross estate at fair market value, with no special exemptions applicable beyond the general unified credit. High-value jewellery in estates above the exemption can produce substantial estate-tax liability that the estate must fund either from cash assets or by selling the jewellery itself.

UK inheritance tax

The UK inheritance tax applies to estates above the nil-rate band, currently £325,000 per individual (with various additional allowances available including the residence nil-rate band of up to £175,000 for estates passing the family home to direct descendants, and spousal exemption for transfers to a UK-domiciled spouse). The standard rate above the threshold is 40 percent (reduced to 36 percent for estates leaving 10 percent or more to charity).

Jewellery is fully includable in the UK estate at market value. The UK has historically had a number of estate-planning structures relevant to jewellery, including potentially exempt transfers (gifts made more than seven years before death are typically exempt from inheritance tax), trusts, and the conditional exemption for objects of national, scientific, historic or artistic interest. The conditional exemption can apply to items of significant cultural value, including some named historic jewellery, allowing them to pass without immediate inheritance tax in exchange for public-access undertakings; the structure is complex and is generally relevant only for the most significant heritage pieces.

Other major jurisdictions

French inheritance tax (droits de succession) applies progressive rates based on the relationship between deceased and heir, with spouse-and-direct-descendant rates lower than rates for more distant heirs. Top rates can reach 60 percent for non-related heirs. Jewellery is fully includable, and the French system has historically been one of the most aggressively enforced inheritance-tax frameworks in major economies.

German inheritance tax (Erbschaftsteuer) operates similarly with progressive rates and relationship-based brackets. Italian inheritance tax has been considerably reduced in recent decades and is now relatively modest. Japanese inheritance tax is among the highest globally with top rates of 55 percent and broad applicability to high-value estates including jewellery.

Switzerland imposes inheritance tax at the cantonal rather than federal level, with rates varying substantially across cantons. Several cantons (including Schwyz and Obwalden) impose no inheritance tax for direct descendants. Belgium, the Netherlands and several other European jurisdictions have inheritance-tax regimes with moderate to high rates depending on relationship and value bracket.

Estate-planning structures involving jewellery

Estate planning involving jewellery uses many of the same structures as estate planning for other assets, with some jewellery-specific considerations:

• Lifetime gifts: Most jurisdictions provide annual or lifetime gift-tax exclusions that allow jewellery to be transferred to heirs during the giver's lifetime, often with no tax consequence below specific thresholds. Documentation of the gift transaction (gift letter, valuation, transfer of possession) is important to establish the gift for legal and tax purposes.
• Trusts: Jewellery can be transferred to trust structures that may, depending on the trust type and jurisdiction, provide estate-tax mitigation while maintaining the donor's ability to use or wear the jewellery during life through retained-income or grantor-retained-interest arrangements.
• Insurance: Specialist jewellery and fine-art insurance often includes provisions for valuation update and may interact with estate-planning for jewellery in coordinated ways.
• Specific bequests: Wills can specify particular jewellery items to particular heirs, distinct from the general estate division. This is particularly important for jewellery with sentimental as well as monetary value, and most experienced estate-planning attorneys recommend specific written guidance for jewellery distribution to avoid family disputes.
• Family limited partnerships and limited liability companies: For very high-value jewellery collections, holding structures including FLPs and LLCs can provide tax-efficient transfer mechanisms in U.S. and other jurisdictions.

Practical implications for jewellery owners

For owners of valuable jewellery considering estate planning, the practical recommendations include:

• Maintain accurate, updated appraisals of significant jewellery, dated within the past three to five years, performed by qualified appraisers.
• Document provenance, original purchase records, and any subsequent valuation history.
• Address jewellery specifically in the will or estate-planning documents, identifying particular pieces for particular heirs where appropriate.
• Consult with an estate-planning attorney familiar with the relevant jurisdiction(s) when significant jewellery values are involved.
• Consider lifetime gifting strategies for jurisdictions where this can be tax-efficient.
• Coordinate jewellery insurance with the broader estate-planning strategy.
• For multi-jurisdictional situations (deceased domiciled in one country, heirs in another, jewellery located in a third), seek specialist cross-border estate-planning advice early in the process.

Jewellery is, alongside fine art and real estate, one of the categories of personal property that most often produces complications in estate administration. Proactive planning materially reduces the burden on heirs and on the estate's executor, and is particularly worthwhile for collections of significant value or for pieces with strong sentimental as well as financial significance.