Executive Summary
The planned Swiss tax reform on individual taxation promises to abolish the marriage penalty, but conceals a crucial point: it simultaneously eliminates the significantly more substantial marriage bonus. Empirical data shows that marriages are typically economic communities in which couples pool their incomes – even reform advocates acknowledge this. While individual taxation would make marital status fiscally irrelevant, it creates new inequalities between couples with different income distributions and reveals a fundamental political goal conflict between tax fairness and work incentives.
Persons
- Hansueli Schöchli (Author, NZZ)
- Susanne Vincenz-Stauffacher (FDP Co-President, Member of National Council SG)
- Kathrin Bertschy (Green Liberal, Member of National Council BE)
Topics
- Marriage penalty and marriage bonus in federal taxation
- Individual taxation vs. couple taxation
- Marriage as an economic community
- Income pooling in households
- Work incentives and tax fairness
- Swiss tax reform 2026
Detailed Summary
The upcoming vote on March 8, 2026 on individual taxation in Switzerland reveals a fundamental goal conflict between different principles of fairness.
The current situation: According to federal estimates, approximately 670,000 married couples currently benefit from so-called marriage taxation (at least 10 percent advantage over cohabiting couples), while approximately 610,000 married couples are disadvantaged. With significant differences (at least 10 percent and 500 francs per year), the number of favored couples is more than twice as large as those disadvantaged. The reform would completely eliminate the marriage bonus, while the marriage penalty affects significantly fewer married couples – an asymmetrical solution.
The economic community thesis: Extensive empirical data suggests that marriages are typically not associations of financially independent persons, but genuine economic communities. A survey by the Institute for Economic Policy at the University of Lucerne (2025) shows: Two-thirds of married people report 50:50 income pooling, with almost another 20 percent pooling partially. Among unmarried people, it is only 18 percent. A European meta-analysis (2025) confirms this trend: In Germany, 80–90 percent of married couples practice income pooling, compared to only 50–60 percent of cohabiting couples. In Sweden, it is 70 percent (married) versus 20–30 percent (unmarried). A survey by Bank Cler (2020) showed that about half of respondents have a joint account, with couples having children even two-thirds.
The fairness problem: Individual taxation creates a new inequality: married couples with unequal income shares (such as 100:0 or 80:20) would face significantly higher tax burdens due to tax progression than couples with equal distribution. This violates the principle of taxation according to economic capacity.
Work incentives: Another argument for the economic community thesis is the goal of strengthening work incentives. In dual-earner couples (about 73 percent of taxable married couples), tax progression begins at zero for both partners. Second earners (usually women) typically respond more strongly to tax incentives. This would be difficult to explain if partners were financially completely independent.
Legal basis: Swiss property law is based on the economic community thesis: absent a different marriage contract, acquisitions during marriage are shared – upon divorce, assets earned during the marriage are divided equally. A small minority agrees to separate property.
Concessions by proponents: Even advocates of individual taxation relativize their position. Susanne Vincenz-Stauffacher (FDP) says: "Marriage is typically closer to an economic community." Kathrin Bertschy (Green Liberal) emphasizes that cohabiting couples with children are "in fact economic communities as well," but rejects joint taxation – a political goal conflict between fairness and work incentives.
Important caveat: The economic community thesis applies only as long as the marriage lasts. The divorce rate is about 40 percent, with average marriage duration of 15–16 years. The Federal Court clarified in 2021 that marriage is no longer a life insurance policy – women over 45 cannot generally assume that re-entry into the workforce is unreasonable.
Key Findings
- 670,000 married couples currently benefit from the marriage bonus, 610,000 bear the marriage penalty – the reform would eliminate the bonus entirely
- Two-thirds of married people share their income completely, which supports the economic community thesis
- Individual taxation creates new inequalities between couples with different income distributions
- Even proponents concede that marriage typically approximates an economic community
- The vote requires a political balancing of tax fairness and work incentives
- After divorce, individual taxation applies again – marriage offers no permanent financial security
Stakeholders & Those Affected
| Who is affected? | Who benefits? | Who loses? |
|---|---|---|
| Married couples with unequal income distribution (e.g., single-earner models, traditional family structures) | Couples with equal income distribution (dual-earner) and cohabiting couples | Married couples with large income differences due to tax progression |
| Women as secondary earners | Persons with strong response to work incentives | Households with single-earner model |
| Children and families with different earning models | Liberals and FDP (ideological preference) | Conservative and traditional models |
Opportunities & Risks
| Opportunities | Risks |
|---|---|
| Stronger work incentives for second earners (usually women) | New inequalities through tax progression on unequal incomes |
| Equal treatment of marriage and cohabitation for tax purposes | Violation of the fairness principle of taxation according to capacity |
| Simplified tax administration (marital status not relevant) | Burden on traditional family models (single-earner) |
| Ideological consistency (individual taxation) | Divergence from actual economic realities of marriages |
| Increased burden for couples in divorce situations |
Relevance for Action
For decision-makers and voters:
Set realistic expectations: The reform does not simply create "fairness," but shifts burdens and benefits. It is a political value judgment, not a given.
Examine compensation mechanisms: If individual taxation is introduced, equalizing measures for couples with sharply unequal incomes are necessary (e.g., differentiated rates, income splitting rules, child allowances).
Monitor labor market effects: The impact on women's labor force participation (as secondary earners) should be empirically monitored.
Consider divorce consequences: Special attention to the situation after divorce and pension provision (especially for women).
Use European comparison: Experiences from Germany, Sweden, and other countries can provide guidance.
Quality Assurance & Fact-Checking
- [x] Central statements and figures verified (670,000 / 610,000 couples, 73% dual-earner)
- [x] Sources identified and validated (NZZ, University of Lucerne, Bank Cler, University of Bern, Federal Court)
- [x] Proponent concessions documented (Vincenz-Stauffacher, Bertschy)
- [x] Bias warning: Article factually argues for economic community thesis, but presents opposing views fairly
- [x] No confirmed errors or hallucinations detected
Additional Research
Swiss Federal Statistical Office (BFS): Official data on divorce rates, marriage duration and household structures in Switzerland (2024/2025)
Federal Department of Finance (EFD): Detailed cost-benefit analyses of tax reform and impact scenarios
International comparisons: OECD reports on tax treatment of spouses and labor force participation (particularly gender perspective)
Opposing views: Statements from advocates of joint taxation (SVP, Conservatives) on social justice and family support
Sources
Primary source:
Marriage as an Economic Community: Goal Conflict in Swiss Tax Reform – Hansueli Schöchli, Neue Zürcher Zeitung (NZZ), 28.01.2026
Supplementary sources:
- Institute for Economic Policy, University of Lucerne: Study on income pooling in Swiss households (2025)
- Bank Cler: Survey on joint accounts and financial management in couple relationships (2020)
- University of Bern / Swiss Household Panel: Analysis of consumption behavior in marriages (2009)
- European meta-analysis: Income pooling in married and unmarried couples (2025)
- Federal Court ruling 2021: Marriage as (no longer) permanent financial security
Verification status: ✓ Facts checked on 29.01.2026
Footer (Transparency Note)
This text was created with support from Claude.
Editorial responsibility: clarus.news | Fact-checking: 29.01.2026
Original publication: Neue Zürcher Zeitung (NZZ) | Author: Hansueli Schöchli