French Inheritance Tax: The Sibling Exemption Explained

Many British and American families connected with France are unaware that, in limited circumstances, siblings can escape inheritance tax entirely. The conditions are demanding, technical and, in certain cases, notably favourable.

Why French inheritance tax can be costly for siblings

France is known for strict inheritance taxation, particularly outside the traditional parent-and-child relationship. Tax is determined not only by the value inherited, but also by the heir’s degree of kinship with the person who has died.

Every beneficiary has a tax-free allowance, after which progressive rates apply to the balance of their inheritance. The more remote the family connection, the smaller the allowance and the greater the rate. Siblings are in a potentially expensive category.

Heir	Tax-free allowance	Typical tax rate range
Children / parents	€100,000 each	5% to 45%
Brothers / sisters	€15,932 each	35% then 45%
Nieces / nephews	€7,967 each	55%
Other heirs	€1,594 each	60%

For brothers and sisters, the amount exceeding €15,932 is charged at 35% up to a relatively low limit, and at 45% above it. Where a sibling inherits a flat in a Paris suburb, the resulting tax liability may run to tens of thousands of euros.

Under the standard rules, a sibling inheriting from a brother or sister in France quickly faces tax rates that rival the highest income tax band.

The little-known sibling exemption that reduces tax to zero

A provision within the French tax code completely changes the position for a narrowly defined group of siblings. Article 796-0 ter of the Code général des impôts permits a brother or sister to inherit their estate share without paying any inheritance tax, provided that all three requirements are satisfied.

Condition 1: five uninterrupted years living together

First, there must have been cohabitation. The surviving sibling must have continuously occupied the same home as the deceased during the five years immediately before the death.

• The shared property must have been both siblings’ main residence.
• The five-year period must not contain any interruption.
• Supporting documents commonly include utility bills, tax assessments, and tenancy or property-ownership records.

The purpose of this condition is to cover siblings who truly maintained a shared home and met everyday costs together, rather than relatives who jointly own a holiday property or only stayed in the same home from time to time.

Condition 2: unmarried, divorced, widowed or legally separated

The second test relates to marital status. At the date of death, the surviving sibling must be:

• single; or
• divorced; or
• widowed; or
• legally separated (“séparé de corps” in French law).

A person who is married or in a civil partnership, including a French PACS, when the death occurs is excluded from the relief, even where they lived with their brother or sister.

Condition 3: an age or disability requirement

The final requirement concerns vulnerability. The surviving brother or sister must either:

• be over 50 years old; or
• have a disability that prevents them from undertaking any professional activity.

This provision is intended for siblings who may, in practical terms, find it difficult to regain financial security after the death of the brother or sister with whom they lived.

Only siblings who are older, or unable to work and living under the same roof, can access this full exemption on inheritance between them.

How the French inheritance tax exemption works in practice

For qualifying siblings, the difference is substantial. Rather than losing up to 45% of their inheritance to tax, the surviving sibling retains the entire amount. A property, savings and personal belongings can all be transferred without any reduction for French inheritance tax.

The relief was introduced by a 2007 reform intended to protect vulnerable siblings living together. It is still rarely used, largely because many people only learn of it after a death, when they meet with a notaire.

Practical examples: taxable or entirely exempt?

Take two contrasting cases involving an identical estate: a flat and savings worth €250,000, left by a woman in her seventies.

• Case A – no exemption: Her 48-year-old brother lives alone nearby rather than in the same flat. He inherits as a sibling and receives only the standard allowance. Most of his inheritance will be charged at 45%, creating a significant bill that could even require the property to be sold.
• Case B – full exemption: Her 55-year-old sister has shared the same flat with her for over five years, is divorced and is unable to work because of a disability. She meets each of the three requirements. The full €250,000 transfers to her without inheritance tax.

The family relationship and estate value are identical in both examples. The distinction is solely the siblings’ living arrangements, age and personal status when the death takes place.

Other circumstances in which French inheritance tax is reduced or removed

The sibling relief forms part of a wider set of targeted French tax concessions. By preparing in advance, families may use different rules to limit the inheritance tax burden across generations.

Spouses, PACS partners and the “zero tax” rule

The position for married couples and people in a French PACS, or civil partnership, is straightforward: no inheritance tax is payable when one partner dies, whatever the value of the estate. This automatic rule has been a central feature of French succession reform for many years.

Additional allowance for disabled beneficiaries

An heir formally recognised as disabled under French law receives a further tax-free allowance of €159,325. This is added to any ordinary allowance available to them because of their family relationship with the deceased.

A disabled heir can combine their usual allowance with a special €159,325 relief, reducing or sometimes erasing their inheritance tax bill.

Cash gifts within families

Distinct from inheritance, French law provides generous exemptions for family cash gifts, subject to age and timing requirements. A grandparent, parent, and in some circumstances an aunt or uncle, can for example make tax-exempt cash gifts up to a specified limit. When used carefully, such gifts transfer wealth during life and reduce the taxable estate left later.

Transfers of businesses and farms

Farmers and business owners can access specialist arrangements, including the “pacte Dutreil”. Subject to particular undertakings, a substantial part of the value of a family company or agricultural land may be protected from inheritance tax, helping to preserve the activity within the family.

Why this is relevant to British and American families with French connections

Many UK and US nationals jointly own French property with siblings, or later move in with a brother or sister. In nearly all circumstances, French inheritance rules apply to assets situated in France, irrespective of nationality.

For instance, a British woman who shares a home just outside Bordeaux with her older disabled brother could unknowingly fulfil the sibling-exemption conditions if she dies first. Without preparation, her brother could face a tax bill he is unable to meet; with documented evidence of cohabitation and appropriate advice, the tax may be eliminated completely.

Key terms to understand

Those affected by these provisions are likely to encounter particular French expressions in official paperwork. Knowing what they mean can make discussions with a notaire or tax adviser easier:

• Abattement: the tax-free allowance available to each heir before inheritance tax is worked out.
• Part successorale: the portion of the estate received by an individual heir.
• Droits de succession: the French expression for inheritance tax.
• Notaire: a public legal professional responsible for estates, property transactions and succession formalities.

Planning in advance: points to discuss with a professional

Anyone who shares a French household with a sibling may wish to establish whether they currently meet, or could later meet, the three statutory requirements. Documentation proving cohabitation, a clear record of marital status and proof of a recognised disability may all prove important in the future.

It can often be useful to run several calculations with a notaire or cross-border tax adviser. They can compare the estate under the standard tax rates for siblings with the outcome where the exemption applies, and may recommend lifetime gifts or ownership-structure changes that retain more wealth within the family instead of passing it to the tax authorities.