Will vs Inheritance Contract (erbvertrag) in Austria, Which Is Right in 2026?

Anyone planning their estate in Austria faces a fundamental choice: draft a revocable will (Testament), lock in a binding inheritance contract (Erbvertrag), or transfer assets during their lifetime via a gift (Schenkung). The decision between a will vs inheritance contract in Austria turns on revocability, Pflichtteil exposure, cost, and, in 2026, the live political debate about reintroducing a national inheritance tax. This guide sets out the legal framework under the ABGB (Austria’s Civil Code, in particular § 1249 ff. ABGB), compares the three instruments dimension by dimension, and delivers a concrete decision framework so you can act with confidence.

The Will (Testament), What It Is, When It Applies, and Who It Suits

A will (Testament) is a unilateral declaration by which a person, the testator, determines what happens to their estate after death. Under Austrian law, a will can be revoked or amended at any time before death, giving the testator maximum flexibility. This revocability is the defining advantage over an inheritance contract, and the main reason wills remain the most common succession instrument in Austria.

Forms of a valid will in Austria

Austrian law recognises several forms, each with specific validity requirements:

• Holographic will (eigenhändiges Testament). The testator writes the entire text by hand and signs it. No witnesses are required, though dating is strongly recommended.
• Allographic will (fremdhändiges Testament). The text may be typed or written by a third party, but the testator must sign in front of three witnesses who are simultaneously present, and the testator must confirm before those witnesses that the document reflects their last will.
• Notarial will (notarielles Testament). Drawn up by a notary with the formalities of the Notariatsordnung. This form offers the strongest evidentiary protection against later challenges.

When a will is the right choice

Choose a will when your circumstances are likely to change. Individuals who are remarrying, whose business valuations are uncertain, or who may wish to add or remove beneficiaries over time benefit from the revocability a testament provides. A will is also the lower-cost option, a simple holographic will costs nothing beyond pen and paper, although notarial drafting is well worth the modest fee for complex estates.

Legal traps to watch

A will does not override the Pflichtteil (statutory reserved share). Under Austrian law, descendants and the surviving spouse or registered partner are entitled to a compulsory portion equal to half of their intestate share. No testamentary provision can eliminate this entitlement entirely, and Pflichtteil claims are a frequent source of post-mortem litigation. Additionally, holographic and allographic wills are comparatively easy to challenge on grounds of ambiguity, undue influence, or non-compliance with formal requirements, making precise drafting essential.

The Inheritance Contract (Erbvertrag), What It Is, When It Applies, and Who It Suits

An inheritance contract (Erbvertrag) is a bilateral or multilateral agreement governed by § 1249 ff. ABGB. Unlike a will, it is not a unilateral declaration but a contract between two or more parties, typically spouses or registered partners, by which one or both commit to leaving a defined share of their estate to the other. The critical distinction: once signed, an Erbvertrag generally cannot be revoked unilaterally. Rescission requires mutual consent or proof of a statutory ground for avoidance (such as fraud or duress).

Key legal characteristics

• Binding nature. The Erbvertrag creates a contractual obligation that survives the testator’s change of mind. This is its principal advantage, and its principal restriction.
• Notarial act required. An Erbvertrag must be executed as a notarial act (Notariatsakt) to be valid. This formal requirement protects the parties from hasty commitments and provides strong evidentiary footing.
• Three-quarter limit. Under § 1253 ABGB, the Erbvertrag may only dispose of up to three-quarters of the estate. The remaining quarter must be kept free for testamentary disposition, ensuring the testator retains a minimum of flexibility.
• Pflichtteil is preserved. The reserved-share entitlements of statutory heirs are not extinguished by an Erbvertrag. Pflichtteil claims can still be asserted against the estate after death.

When an inheritance contract is the right choice

The Erbvertrag is the instrument of choice when binding certainty matters more than later flexibility. Spouses who wish to mutually designate each other as heirs, and who want assurance that neither party can unilaterally revoke that promise, gain the strongest legal protection through an Erbvertrag. Family business owners seeking a binding succession commitment (often paired with shareholder agreements or partnership clauses) also benefit, because the contractual lock-in protects the chosen successor against a late change of heart.

The trade-off is real: once signed, the testator surrenders the freedom to redirect their estate unless the other party agrees. For younger testators or those whose family circumstances are unsettled, this rigidity can become a problem rather than a safeguard.

Will vs Inheritance Contract in Austria: Side-by-Side Comparison

The following table maps the will vs inheritance contract decision across every dimension that matters in practice, including the lifetime-transfer alternative for completeness.

Practitioner takeaways:

• For most individuals with straightforward estates, a notarial will provides sufficient protection at lower cost, and preserves full flexibility.
• Spouses who want irrevocable mutual protection should use an Erbvertrag, but must accept that the remaining one-quarter of the estate is all the testator can freely dispose of afterwards.
• Lifetime transfers are best reserved for specific asset categories (a family home, business shares) where immediate handover and the resulting certainty outweigh the loss of control.

Dimension-by-Dimension Analysis: Will vs Inheritance Contract in Austria

Tax implications, including the 2026 debate

Austria does not currently levy a national inheritance or gift tax. The Erbschafts- und Schenkungssteuer was abolished in 2008 following a Constitutional Court ruling. However, the 2026 political landscape has brought the question of reintroduction firmly back into public discourse, with several parties and policy organisations calling for a new inheritance tax on large estates. As of July 2026, no legislation reintroducing such a tax has been passed, but the debate creates timing risk for anyone weighing a will vs inheritance contract or a lifetime gift.

The key point for 2026: neither a will nor an Erbvertrag offers a tax advantage over the other under current law. The Grunderwerbsteuer applies equally to both. If an inheritance tax is reintroduced, timing, not instrument choice, will determine exposure. Industry observers expect any new tax to include anti-avoidance rules targeting recent gifts, making it critical to seek professional tax advice before executing transfers.

Cost and procedural burden

A holographic will costs nothing to create but carries higher contestation risk. A notarial will involves modest notary fees and provides substantially better evidentiary protection. An Erbvertrag, by contrast, requires a notarial act, a more involved and costlier procedure, but the upfront investment typically reduces post-mortem litigation costs. For estates involving real estate, land-register entry fees and GrESt self-calculation obligations apply regardless of instrument. The practical recommendation: budget for notary engagement early, especially if an Erbvertrag or complex will is contemplated.

Liability and Pflichtteil risk

The Pflichtteil (reserved share) is the single largest source of inheritance disputes in Austria. Under ABGB rules, the statutory reserved share equals one-half of the intestate entitlement of the surviving spouse and descendants. Neither a will nor an Erbvertrag can eliminate the Pflichtteil. However, the instruments differ in how they manage the risk:

• Will: The testator can direct assets freely (subject to Pflichtteil), but disgruntled heirs frequently challenge the will’s validity. Ambiguity or informal execution increases vulnerability.
• Erbvertrag: The binding contractual framework reduces the scope for challenges to the testator’s intent, but Pflichtteil claims from children or other statutory heirs remain fully available. Skilled drafting can include buy-out clauses or Pflichtteil compensation agreements to pre-empt litigation.
• Lifetime gifts: Large gifts made within defined periods before death may be clawed back to satisfy Pflichtteil claims, creating exposure for the recipient.

Enforceability and contestability

An inheritance contract carries stronger enforceability than a will. Because the Erbvertrag is a contract, challenges must meet the higher threshold of contract-law avoidance grounds, typically fraud, duress, or fundamental error in formation. OGH (Austrian Supreme Court) case law consistently upholds the binding nature of properly executed Erbvertrag agreements. A will, by contrast, can be challenged on broader grounds including ambiguity, lack of testamentary capacity, or failure to comply with formal requirements. To maximise enforceability of either instrument:

• Use clear, unambiguous language
• Execute as a notarial act where possible
• Register the instrument (the Austrian Central Register of Testaments can record wills; Erbvertrag instruments are filed by the notary)
• Obtain independent legal advice for all parties to rebut later claims of undue influence

Timing and suitability for business succession

For family business owners, the choice between instruments has operational consequences. A will preserves flexibility but offers no certainty to the designated successor, the testator might change their mind, leaving the business’s future in limbo. An Erbvertrag locks in the succession plan, giving the chosen heir confidence to invest time and capital in the business. The strongest arrangement often combines an Erbvertrag with a shareholder or partnership agreement containing tag-along, drag-along, or right-of-first-refusal clauses. Lifetime transfers (gifting business shares) can accelerate the transition but require careful structuring to manage Grunderwerbsteuer on any associated real-estate, maintain reporting compliance, and prevent Pflichtteil clawback by other heirs.

What Changes in 2026

The defining development of 2026 for Austrian succession planning is the renewed political debate about reintroducing an inheritance tax. Several parties and civil-society organisations have publicly advocated for a wealth- or inheritance-tax proposal targeting high-value estates. Parliamentary discussions were ongoing as of July 2026, but no new inheritance-tax law had been enacted.

This matters for instrument choice in two ways. First, anyone considering a lifetime gift to accelerate succession should be aware that a future tax law could include look-back provisions capturing recent transfers, making a rushed gift potentially counterproductive. Second, neither a will nor an Erbvertrag offers any special shield against a future tax; both instruments govern succession at death, and any new tax would likely attach at that point regardless of the instrument used.

Recommended step for 2026: If you are planning a substantial lifetime transfer or finalising an Erbvertrag, seek a current tax-clearance opinion from a qualified tax adviser before executing. Monitor Austrian parliamentary proceedings for any draft legislation. Acting on outdated assumptions about the tax-free environment could prove costly if the political landscape shifts.

Decision Framework: When to Choose a Will, Erbvertrag, or Lifetime Transfer

The following framework translates the legal analysis into actionable rules. Use it to identify which instrument fits your situation.

Choose a will when:

• Your family or financial situation may change materially
• You want the cheapest, simplest instrument for a straightforward estate
• You are not married or in a registered partnership (Erbvertrag is primarily available to spouses and registered partners)
• You need to retain complete freedom to add, remove, or alter beneficiaries

Choose an Erbvertrag when:

• You and your spouse want irrevocable mutual succession commitments
• A family business succession plan requires binding certainty for the designated heir
• You want to reduce the risk of post-mortem challenges to your succession arrangements
• You are prepared to accept that revocation requires your spouse’s consent

Choose a lifetime transfer when:

• You want to hand over specific assets (a home, business shares) now rather than at death
• The 2026 tax environment makes immediate transfer attractive after obtaining professional advice
• A phased succession plan benefits from real-time transfer of control

When to Engage an Inheritance Lawyer in Austria

Many routine estates can be handled with a straightforward notarial will. But the choice between a will and an inheritance contract, and the associated Pflichtteil, tax, and enforceability dimensions, moves into territory where professional advice is not optional. Engage an inheritance lawyer or notary when any of the following apply:

• You are considering an Erbvertrag. The mandatory notarial-act requirement alone makes professional involvement essential; the structuring decisions (Pflichtteil compensation, buy-out clauses, interaction with shareholder agreements) demand experienced counsel.
• Your estate includes cross-border assets. Austrian-German dual estates, property in multiple EU member states, or beneficiaries resident abroad trigger conflict-of-laws questions under the EU Succession Regulation that require specialist analysis.
• Pflichtteil disputes are foreseeable. If you expect disinherited or under-provided heirs to challenge your succession plan, pre-emptive legal advice on structuring and defensive documentation is critical.
• Significant real estate is involved. Grunderwerbsteuer calculations, land-register procedures, and valuation questions benefit from notary and tax-adviser coordination.
• The 2026 inheritance-tax debate affects your timeline. If you are accelerating transfers to pre-empt a potential new tax, you need a current tax-clearance opinion before acting.

When attending an initial consultation, bring an asset list, any existing testaments or draft Erbvertrag documents, corporate/shareholder agreements, mortgage and real-estate documents, your family tree, and a written list of your desired succession outcomes.

Conclusion

The choice between a will vs inheritance contract in Austria is not abstract, it determines whether your succession plan is flexible or locked in, whether your spouse or business partner has binding certainty or a revocable promise, and how exposed your estate is to Pflichtteil claims and potential tax changes in 2026. For most individuals, a well-drafted notarial will provides sufficient flexibility and protection. For spouses seeking irrevocable mutual security or business owners needing binding succession certainty, the Erbvertrag, despite its higher cost and reduced flexibility, is the stronger instrument. In either case, the 2026 political environment demands that you verify the current tax position before finalising any succession arrangement. Act on professional advice, not assumptions.

Sources

1. RIS, Allgemeines bürgerliches Gesetzbuch (ABGB), § 1249
2. oesterreich.gv.at, Erben und Vererben
3. BMF / Findok, Information zum Auslaufen der Erbschafts- und Schenkungssteuer
4. USP.gv.at, Grunderwerbsteuer
5. Österreichisches Parlament, Parliamentary proceedings
6. European e-Justice Portal, Succession (Austria)