In Switzerland, wealth tax is levied annually on capital, whether or not it generates income. For a retired person whose wealth is concentrated in low-yielding real estate, or an entrepreneur who has sold their business and lives on returns from their capital, the combined burden of income tax and wealth tax may exceed disposable income. This is not merely theoretical: several cantons have recognised the issue and introduced a capping mechanism, commonly referred to as a tax shield. This article explains how it works, who benefits from it and why its future in the Canton of Vaud, in light of the 12% initiative, raises very practical issues for taxpayers with substantial wealth.
Why wealth tax can become confiscatory
Swiss wealth tax is calculated on net wealth: real estate, securities, cash, shareholdings and other assets, less liabilities. The rate varies by canton, but the tax is levied every year irrespective of the assets’ actual yield.
Under the progressive wealth tax scales applied in all French-speaking cantons, the rate may rise as wealth increases. The amount of wealth tax therefore rises not only because the tax base is larger, but also because of the progressive scale.
The effect is particularly marked where substantial wealth is illiquid or produces little income. Without a cap, wealth tax is added in full to income tax, potentially bringing the total tax burden to a level that absorbs most of the taxpayer’s income. If the income generated by the assets is insufficient to pay the tax, the taxpayer may have to draw on capital to discharge the liability. If this recurs, taxation may gradually erode the very substance of the wealth being taxed.
Those most exposed to this imbalance include:
- Retired persons whose wealth consists of low-yielding real estate or capital accumulated before retirement through high earnings;
- Art collectors and owners of low-yielding assets;
- Entrepreneurs who have sold their company and now hold substantial capital but receive little current income;
- Heirs to privately held family property portfolios.
According to the case law of the Swiss Federal Supreme Court, the State may tax wealth, but taxation must not, through its severity and recurrence, ultimately absorb the wealth on which it is levied. Where a tax burden is so severe that it causes lasting damage to the substance of the taxpayer’s wealth, it may be characterised as confiscatory (BGE 122 I 305, para. 7).
It should be noted that a general wealth tax has now become rare in Europe. In 2026, only three countries – Switzerland, Norway and Spain – still levy an annual tax on individuals’ net wealth. Other countries, including France, Italy, Belgium and the Netherlands, tax certain components of wealth but do not have a general wealth tax comparable to the Swiss system.
In Switzerland, KPMG’s Clarity on Swiss Taxes 2026 report, based on data from the Swiss Federal Tax Administration (FTA), states that the top marginal wealth tax rate for the largest fortunes ranges from 0.13% in Nidwalden to approximately 0.86% in Geneva – a ratio of more than 1 to 6 between the lowest- and highest-tax cantons. Basel-Stadt (0.79%), Vaud (0.79%) and Geneva (0.86%), all three of which have a tax shield, have Switzerland’s highest wealth tax rates(*).
(*) These figures are the top marginal cantonal and municipal wealth tax rates applicable in each cantonal capital, as assessed by KPMG in Clarity on Swiss Taxes 2026. The calculation assumes a single taxpayer, resident in the cantonal capital, with no church tax. The figures incorporate the relevant cantonal and municipal taxation rather than merely the nominal rate stated in cantonal legislation. They should not be relied upon as a basis for any decision without detailed verification and professional advice.
What is the tax shield? Definition and mechanism
The tax shield is a mechanism that limits the wealth tax burden where certain conditions are met. It is grounded in the constitutional guarantee of property under Article 26 of the Federal Constitution (Cst.) and in the Federal Supreme Court’s case law prohibiting confiscatory taxation that exhausts the substance of the taxable asset (BGE 122 I 305, para. 7; see also BGE 143 I 73, paras. 5.1-5.2).
The rules governing the tax shield differ among the seven cantons that have introduced such a mechanism.
Vaud (Article 8 LICom) and Geneva (Article 60 LIPP) apply a similar principle: cantonal and municipal income and wealth taxes combined may not, as a rule, exceed 60% of the relevant net income. Where that threshold is exceeded, the reduction is applied to wealth tax. There is, however, an important adjustment: a minimum deemed return on wealth is included so that substantial wealth producing little or no income does not benefit from an excessive reduction.
Example taken from the explanatory memorandum published in the Bulletin of the Vaud Grand Council, 2007-2012 legislature, Volume 6, Council of State, pp. 317 et seq. (in Memorandum of 26 April 2024 from Jean-Luc Schwaar, Director-General for Institutional and Municipal Affairs, to Christelle Luisier Brodard, President of the Council of State – The tax shield: development of legislation, practice and case law) :
“The following two examples illustrate this new standard (excluding direct federal tax):
| Net wealth | 100,000,000 | tax : 750,000 |
| Net income | 3,000,000 | tax : 900,000 |
| Total Vaud + municipal tax | 1,650,000 | |
| Maximum tax (60% × 3,000,000) | 1,800,000 |
As the total ordinary tax is below the maximum, no reduction applies.
| Net wealth | 100,000,000 | tax : 750,000 |
| Net income | 800,000 | tax : 240,000 |
| Total Vaud + municipal tax | 990,000 i.e. 123% of net income | |
| Maximum tax | ||
| Adjusted net income (1% × 100,000,000) | 1,000,000 | |
| Maximum tax under the 60% rule | 600,000 |
The maximum tax of CHF 600,000 is levied instead of the confiscatory amount of CHF 990,000.“
Minimum return: Geneva and Vaud both include a minimum return on wealth in the tax shield calculation. In Geneva, it must amount to at least 1% of net wealth. In Vaud, the annual tax law sets the rate used to calculate net income from wealth (see Article 8(3) LICom). It remained at 1% throughout 2021-2026. Although the rate itself did not change, its role in the calculation changed on 1 January 2022 (a cumulative approach), before reverting on 1 January 2025 to the alternative approach used before January 2022.
Minimum tax: since 2018, the Vaud tax shield has been subject to a minimum tax. After application of the tax shield, cantonal and municipal wealth tax may not be less than 3 ‰ of taxable wealth.
How the tax shield operates in the seven cantons concerned
As noted above, seven cantons have introduced a capping mechanism commonly referred to as a tax shield. Vaud, Geneva and Aargau focus primarily on the overall tax burden as a proportion of income. Bern and Basel-Stadt place greater emphasis on the return on wealth. Lucerne now essentially applies a ceiling specific to the wealth tax rate (a maximum rate rather than a true tax shield). Valais occupies an intermediate position with a hybrid system.
Importantly, the tax shield does not include direct federal tax, which is added to the amount calculated after applying the cantonal mechanism.
| Canton | Tax shield mechanism | Comments |
| Vaud | Combined cantonal and municipal income and wealth taxes capped at 60% of net income | Minimum return on wealth: rate set by the annual tax act (2021-2026: 1% of wealth). Minimum tax: cantonal and municipal wealth tax must exceed 3 ‰ of taxable wealth |
| Geneva | Combined cantonal and municipal income and wealth taxes capped at 60% of net income | Minimum return on wealth: 1% of net wealth |
| Valais | Triggered where wealth tax and tax on the return from wealth exceed 20% of taxable net income | Specific reduction: CHF 10,000 allowance and at least 50% of wealth tax remains payable |
| Bern | Cantonal and municipal wealth tax capped at 25% of the net return on wealth | Floor: tax must remain at least 2.4 ‰ of taxable wealth |
| Basel-Stadt | Wealth tax plus tax on the return from wealth capped at 50% of that return | Floor: tax must remain at least 5 ‰ of taxable wealth |
| Lucerne | Cantonal, municipal and church wealth taxes combined capped at 3 ‰ of taxable wealth | Income tax also capped at 22.8% or 22.4% of taxable income |
| Aargau | Recurring cantonal, municipal and church income and wealth taxes capped at 70% of net income | Floor: the reduction may not exceed half of the wealth tax otherwise due |
Sources: the legislation and regulations of the cantons concerned are listed under ‘Sources and bibliography’ at the end of this article.
Outside these seven cantons, many cantons (Zurich, Zug, Schwyz, Nidwalden and others) apply markedly lower wealth tax rates, reducing the need for such a mechanism. For substantial fortunes, especially those producing little income, the annual difference between cantons may amount to tens of thousands of Swiss francs. Any comparison must nevertheless consider the taxpayer’s overall tax position rather than merely whether a tax shield exists.
Who benefits from the tax shield?
The tax shield does not reduce wealth tax for every taxpayer. It is triggered only where the combined burden exceeds the applicable ceiling.
Conditions for the tax shield to apply:
- Residence in a canton that has a tax shield;
- Sufficient wealth for the wealth tax liability to be material;
- Income low enough in relation to wealth for the threshold to be reached.
In practice, those who benefit include:
- Retired persons with substantial property wealth and low income (OASI pension, occupational pension and partial rental income);
- Entrepreneurs following the sale of a business, whose capital is substantial but produces little current income;
- Heirs to privately held assets, particularly real estate, with no high-income-generating activity.
What the tax shield does not do:
It does not reduce wealth tax generally. A taxpayer with assets of CHF 3 million and income of CHF 250,000 will not cross the threshold and will receive no benefit. The mechanism targets the specific situation in which wealth is disproportionate to income.
The Vaud tax shield under pressure
Introduced in 2009 at the instigation of Pascal Broulis, then the State Councillor responsible for finance, the Vaud tax shield was intended to prevent confiscatory taxation and preserve the canton’s fiscal attractiveness amid inter-cantonal competition. The mechanism has undergone several changes, beginning with the introduction of the minimum tax described above in 2018.
Non-compliant application between 2009 and 2021
Investigations conducted since 2025 revealed that, between 2009 and 2021, administrative practice did not comply with either the statutory wording or the case law. It reflected the original intention of the scheme’s authors, but not the wording ultimately enacted by the legislature. Figures published by the Council of State in 2026 put the theoretical tax differential between the two methods at CHF 202 million over thirteen years, without this establishing any actual loss of tax revenue.
2022-2024: a less favourable tax shield
A reform applied from 2022 changed the calculation in two important respects. First, where the actual return on wealth was below 1%, the tax authorities nevertheless imputed a deemed return equal to 1% of wealth. That amount was added to the income used to calculate the 60% ceiling. For taxpayers with substantial but low-yielding wealth, this artificially increased the reference income and therefore reduced the protection afforded by the tax shield.
Second, dividends from qualifying participations held as private assets, although only 70% taxable for income tax purposes, were considered in full when calculating the tax shield. This could particularly disadvantage entrepreneurs whose wealth and income were substantially connected with their business.
In December 2024, the Grand Council therefore adopted a new formula, removing the adjustment for qualifying participations and restoring the alternative calculation. The calculation now uses either the relevant income or, where higher, a minimum return equal to 1% of wealth. Effective from 2025, the reform also applies to assessments from 2022 onwards that remain open.
Valérie Dittli, the State Councillor then responsible for the Department of Finance, initiated consideration of tax-scale reform, including a proportional (‘flat tax’) rate for wealth tax. This work was ultimately deferred to the next legislature, from 2027. In March 2025, operational failures within the Department of Finance led the Council of State to reorganise the departments and place Finance under Christelle Luisier Brodard with effect from 1 June 2025.
The tax shield and the 12% initiative
The initiative provides for a 12% reduction in cantonal income tax and cantonal wealth tax from 2027. It does not apply to direct federal tax or municipal taxes. The proposal is therefore not a 12% reduction in the taxpayer’s total tax bill, but only in the tax levied by the canton. By way of illustration, for the largest fortunes in Lausanne, the combined wealth tax rate would fall from approximately 0.79% to 0.73%. Vaud would thereby move from second to third place among the cantons imposing the highest wealth taxes (see ‘Why wealth tax can become confiscatory’ above).
This vote has an important peculiarity: the future of the tax shield is directly linked to its outcome. The reform adopted in 2024 contains a sunset clause, so its continuation depends on the vote of 27 September 2026.
If the initiative is accepted, the 12% reduction will take effect and the 2024 tax shield reform will lapse: the less favourable regime introduced in 2022 will remain. If the initiative is rejected, the general 12% reduction will not take place, and the new tax shield formula will be retained.
The choice is therefore not simply between a tax cut and a tax shield, but between two different methods of reducing the tax burden: a general reduction in cantonal tax or a targeted mechanism for situations in which the relationship between income and wealth becomes particularly unfavourable.
The 12% reduction in context
To understand the true scope of the 12% figure, income tax and wealth tax must be considered separately.
Income tax: the Council of State and the Grand Council have already introduced a reduction in basic cantonal tax from 2025. The rebate is 5% for 2026 and will rise to 7% in 2027. If the initiative is accepted, 12% would replace the planned 7%: compared with the regime already scheduled for 2027, the additional reduction would therefore be 5 percentage points, not 12.
Wealth tax: the position is different. The 5% reduction announced for 2027 has not yet been enacted. Compared with the current ordinary regime, the initiative would therefore deliver a general 12% reduction in cantonal wealth tax, but at the cost of losing the new tax shield formula.
| Cantonal tax | Position in 2026 | If the 12% initiative is rejected in 2026 | If the 12% initiative is accepted in 2026 |
| Income | 5% reduction under LRIPP | 7% reduction from 2027 under LRIPP | 12% reduction from 2027; LRIPP repealed |
| Wealth | No general reduction in force | 5% reduction contemplated for 2027, but not yet enacted | 12% reduction in 2027 |
| Tax shield | 2024 reform applies | 2024 reform retained | 2024 reform lapses |
LRIPP = Vaud Act of 10 October 2023 on the Reduction of Cantonal Income Tax for Individuals, effective from 1 January 2024
Which model for Vaud?
The vote ultimately pits two approaches against one another: a general tax reduction or retention of a corrective mechanism for cases in which the burden becomes particularly heavy. A third approach remains possible in the longer term: reforming the wealth tax scale itself.
A 12% reduction, a tax shield or reform of the scale: three different instruments addressing the same question – how can the canton remain fiscally attractive while maintaining taxation that reflects ability to pay?
Practical implications for the families concerned
The mechanism remains in force in Vaud at the date of writing. However, instability in the regulatory framework creates genuine uncertainty for residents who benefit from it. Prudent wealth planning does not assume that the tax shield will endure: it models both scenarios – with and without the tax shield – and anticipates the adjustments required if the framework changes.
Wealth-planning implications
The tax shield is not a permanent entitlement. Its existence depends on cantonal political decisions, as the Vaud debate demonstrates. It should therefore be incorporated into robust wealth planning rather than treated as a stable parameter.
Choice of tax residence
The canton of residence determines whether a tax shield applies. For wealth of CHF 10 million and annual income of CHF 100,000, the difference in annual tax burden between a canton with a tax shield (Vaud or Geneva) and one without (Zurich or Bern) may justify a detailed review of tax residence.
That choice involves far more than taxation: proximity to family, access to services (transport, hospitals, schools and so forth), quality of life and professional networks must not be overlooked. Over a 10- to 20-year horizon, however, the financial impact of an unsuitable choice of tax residence can be substantial.
Asset structuring
Wealth concentrated in illiquid, low-yielding assets creates greater exposure to the tax shield issue. Portfolio structure – including the balance between real estate, listed securities, regular-income investments and diversifying assets – directly affects taxable income and therefore whether the tax shield is triggered.
Interaction with succession planning
Wealth erodes over time where the annual tax burden exceeds income. For families wishing to pass their wealth intact to the next generation, this gradual erosion is a risk that should be expressly modelled in succession planning.
Inter-cantonal comparison
The attractiveness of a place to live depends above all on its combination of infrastructure, leisure amenities, quality of life and living costs. With that caveat, identifying Switzerland’s most favourable canton for substantial wealth involves several considerations beyond the tax shield alone: income tax rates, wealth tax rates, inheritance taxation and stability of the tax framework.
A canton without a tax shield but with a very low wealth tax rate – such as Nidwalden (0.13%) or Zug (0.22%) – may be more advantageous than a canton with a tax shield but a high basic rate, such as Geneva (0.86%). The analysis must be based on the taxpayer’s specific wealth and income profile, not on general comparisons.
Checklist: five questions to ask about the tax shield
- Does my canton of residence have a tax shield? If not, the mechanism is irrelevant, although reviewing the choice of residence may be worthwhile. Neuchâtel, for example, has a relatively high wealth tax (0.68% from CHF 1 million of taxable wealth) and no tax shield.
- Does my wealth-to-income ratio trigger the mechanism? The calculation depends on the composition of the assets and the level of taxable income.
- How stable is the mechanism likely to remain in my canton? The Vaud debate shows that a tax shield may be called into question. Sound wealth planning does not assume its permanence.
- How is my wealth evolving relative to my income? A widening gap increases exposure to erosion if the tax shield disappears.
- Do my succession arrangements take this factor into account? The annual tax burden affects the wealth available to pass to the next generation.
Sources and bibliography
The information in this article has been checked against the following official and media sources (current as at August 2026).
Official sources
– State of Vaud – Tax shield: statutory basis and official documentation – https://www.vd.ch/actualites/actualite/news/25127-bouclier-fiscal-avis-de-droit
– State of Vaud – Paying my taxes: 2026 instalments – https://www.vd.ch/etat-droit-finances/impots/impots-pour-les-individus/payer-mes-impots?
– Memorandum of 26 April 2024 from Jean-Luc Schwaar, Director-General for Institutional and Municipal Affairs, to Christelle Luisier Brodard, President of the Council of State – The tax shield: development of legislation, practice and case law
– Legal opinion of 1 May 2024 by Maître Noël concerning the calculation of the tax shield
– François Paychère’s report of 20 July 2025 establishing the facts concerning the treatment of the tax shield, addressed to the State of Vaud, represented by its Council of State
– Council of State press release, State of Vaud, 3 June 2026, Taxation – audits by the Cantonal Finance Inspectorate, ‘The Government publishes the CFI audits and figures relating to the tax shield’, https://www.vd.ch/actualites/communiques-de-presse-de-letat-de-vaud/detail/communique/le-gouvernement-publie-les-audits-du-ccf-et-les-chiffres-relatifs-au-bouclier-fiscal
– Council of State press release, State of Vaud, 23 June 2026, Cantonal finances, ‘The Council of State begins work on the plan to restore financial balance by 2030’, https://www.vd.ch/actualites/communiques-de-presse-de-letat-de-vaud/
– Council of State press release, State of Vaud, 31 July 2025, ‘The Constitutional Court rejects the application challenging the sunset clause in the Municipal Taxes Act in connection with the tax shield’
– State of Geneva – Geneva tax shield https://www.ge.ch/dossier/vos-impots/impot-geneve/bouclier-fiscal
– Presentation by Florian Magnin of the Geneva Cantonal Tax Administration, Expert Suisse seminar, 30 January 2023 – Tax shield (Part 1)
Legal sources
Federal law
– Federal Constitution of the Swiss Confederation of 18 April 1999 (Cst.), Article 26, SR 101
Tax sources
Cantonal law
– Vaud Act of 4 July 2000 on Direct Cantonal Taxes (LI), BLV 642.11
– Vaud Act of 10 October 2023 on the Reduction of Cantonal Income Tax for Individuals (LRIPP), BLV 642.12
– Explanatory Memorandum and Bill (EMPL) amending the Act of 10 October 2023 on the Reduction of Cantonal Income Tax for Individuals (LRIPP), September 2024
– Explanatory Memorandum and Bill (EMPL) amending the Act of 10 October 2023 on the Reduction of Cantonal Income Tax for Individuals (LRIPP), June 2026
– Vaud Tax Act 2021 of 11 December 2018, Article 7, BLV 642.00.111218.2
– Vaud Tax Act 2022 of 11 December 2018, Article 7, BLV 642.00.111218.3
– Vaud Tax Act 2023 of 11 December 2018, Article 7, BLV 642.00.111218.4
– Vaud Tax Act 2024 of 3 October 2023, Article 7, BLV 642.00.031023.1
– Vaud Act of 5 December 1956 on Municipal Taxes (LICom), Article 8, BLV 650.11
– Geneva Act of 27 September 2009 on the Taxation of Individuals (LIPP), Article 60, RSG D/3/08
– Tax Act of the Canton of Bern, Article 66 StG/BE, BSG 661.11 -https://www.sv.fin.be.ch/fr/start/themen/steuern-berechnen/privatperson/vermoegenssteuerbremse.html
– Tax Act of the Canton of Aargau, Article 56 StG/AG, SAR 651.100
– Tax Act of the Canton of Basel-Stadt, Article 52 StG/BS, SG 640.100
– Valais Ordinance determining when wealth tax is confiscatory, Article 2, RS/VS 642.300
– Tax Act of the Canton of Lucerne, Article 62 StG/LU, SRL 620
Case law
– Swiss Federal Supreme Court decisions BGE 122 I 305, para. 7, and BGE 143 I 73, paras. 5.1-5.2: these decisions concern the guarantee of property (Article 26 Cst.) and the prohibition of confiscatory taxation.
– Judgment of the Constitutional Court of the Vaud Cantonal Court of 25 August 2025: application by Olivier Feller and others challenging Article 2(1), first sentence, of the Act of 17 December 2024 amending the Act of 5 December 1956 on Municipal Taxes
– Swiss Federal Supreme Court judgment of 22 April 2026, 9C_541/2025: appeal against the judgment of the Vaud Cantonal Court of 25 August 2025 (CCST.2025.0001)
Websites consulted
– Tax Foundation Europe, Wealth Taxes in Europe, https://taxfoundation.org/data/all/eu/wealth-taxes-europe/
– OECD, The Role and Design of Net Wealth Taxes in the OECD, https://www.oecd.org/en/publications/the-role-and-design-of-net-wealth-taxes-in-the-oecd_9789264290303-en/full-report/component-4.html
– KPMG, Clarity on Swiss Taxes 2026, May 2026, https://kpmg.com/ch/en/insights/taxes/market-outlook-recap-swiss-taxes.html
– La Vie économique, economic policy review, ‘Growth-friendly corporate taxation: scope for reform’, 27 September 2017
– 12% Initiative, https://www.initiative12.ch/arguments/
