Imputed Rental Value in Switzerland: How It Works, Reform Plans, and Controversial Debate

Published on: September 14, 2025 | Reading time: 15 minutes

Owning a home in Switzerland means paying tax not only on income – but also on the privilege of living in your own four walls. The so-called imputed rental value (Eigenmietwert) has been one of the country’s most debated tax instruments for decades. In this article, we explain why it exists, how it works, what political reform plans are currently on the table, what opportunities and risks an abolition would bring, and why the debate is so controversial. Finally, we highlight why consulting a mortgage expert can be particularly valuable right now.

 

Introduction: Why the imputed rental value has been controversial for decades

The imputed rental value is one of the most disputed tax instruments in Switzerland. For decades, it has sparked conflict among homeowners, tenants, politicians, and economists. The basic idea may sound unusual: individuals who live in their own property must declare a notional rental income as taxable income – even though they do not actually receive this income.

The reasoning is that owners should not be treated more favorably than tenants, since they enjoy a “housing advantage” without paying rent. Supporters point to this principle of equal treatment, while many owners see the tax as an unfair burden, especially when their income drops in retirement. Unsurprisingly, the debate about abolishing the imputed rental value resurfaces regularly.

What is the imputed rental value – legal basis and calculation

The imputed rental value is a fictitious income that homeowners must declare in their tax return if they occupy the property themselves. It is assessed by cantonal tax authorities and is based on the market value of the property as well as the average rents of comparable homes. In practice, it is typically set at 60 to 70 percent of the market rent.

However, cantonal differences are significant, as each canton applies its own method. This leads to a paradox for owners: on one hand, they are taxed on income they never receive; on the other hand, the system allows for tax deductions, such as mortgage interest and maintenance costs. Those with high interest payments or extensive renovations can partially offset the burden. Critics argue this creates an incentive to maintain high levels of debt rather than steadily repaying mortgages.

Current reform plans: Abolition through the property tax proposal

In recent years, the political debate around the imputed rental value has gained momentum. Parliament has drafted a proposal to abolish the imputed rental value for owner-occupied properties. For second homes, however, a cantonal property tax would be introduced instead.

This reform would fundamentally reshape the system and require significant adjustments for both owners and tax authorities. The nationwide referendum on this proposal will take place on September 28, 2025. If approved, the reform would take effect on January 1, 2028 at the earliest, since cantons will need time to adapt their systems and IT infrastructure. While homeowners’ associations welcome the reform, as it would significantly reduce tax burdens, critics warn of side effects for the real estate and renovation markets. The Federal Department of Finance (FDF) provides further details on the reform of homeownership taxation – including the impact of mortgage interest rates on tax revenues.

Source: Federal Department of Finance (FDF)

 

Opportunities and risks of abolition from an owner’s perspective

For many homeowners, abolishing the imputed rental value would result in significant tax relief. Households that have largely paid off their mortgages and face only minimal interest costs would benefit the most. They would no longer be taxed on fictitious income and could substantially reduce their overall tax bill. Retirees would also gain relief, since the imputed rental value often weighs heavily when regular income declines.

But there are drawbacks: abolishing the system would also mean scrapping or severely limiting tax deductions for mortgage interest and maintenance expenses. Owners planning major renovations or energy-efficiency upgrades could find themselves at a disadvantage. Moreover, the disappearance of deductions might reduce the incentive to hold large mortgages. While this could decrease household debt in the long term, it might make it harder in the short term for owners to finance additional projects. In short, abolition would create both winners and losers.

Political and economic resistance to the reform

Resistance is especially strong among industry associations. Organizations such as Suissetec and Bauneb Schweiz argue that eliminating tax deductions could significantly weaken investment in building renovations and the energy transition. At a time when climate action and energy efficiency should be encouraged, they fear the opposite effect: less demand for renovation work, delayed projects, and fewer contracts for specialized firms. Some experts even warn that black-market labor could increase if owners try to save costs without requesting official invoices.

Supporters counter that the current system distorts incentives by rewarding high debt. Abolition would encourage owners to reduce mortgages more quickly, thereby freeing up financial resources for future investments. They also argue that fairness between tenants and owners would remain intact, since tenants cannot deduct housing expenses either. Further updates on the debate can be found here.

Conclusion and implications for the housing market and tax policy

The imputed rental value has been a cornerstone of Swiss tax policy for decades, shaping not only personal tax burdens but also the functioning of the real estate and mortgage markets. Originally intended to create equal treatment between tenants and owners, the system has produced many side effects – from favoring highly indebted households to burdening retirees with lower incomes.

The September 2025 referendum is therefore more than just a tax reform vote: it represents a potential system shift with wide-ranging consequences. Abolition could make homeownership more attractive and promote equity accumulation, but it might also slow down investment in energy-efficient renovations. Ultimately, the decision will show whether Switzerland prioritizes financial relief over maintaining tax incentives for housing investments. What is certain is that the imputed rental value will remain an emotional and politically sensitive issue.

Why Talking to a HYPOHAUS Mortgage Expert Pays Off

The ongoing reform debate illustrates the importance of careful financial and tax planning for homeowners. Depending on the outcome of the referendum, mortgage models, amortization strategies, or renovation plans may need to be reassessed.

At HYPOHAUS, our experts help homeowners analyze their individual situation and develop tailored strategies. Whether it’s tax optimization, mortgage adjustments, or planning future investments – you will receive solid advice and practical solutions. Contact our team and get personalized guidance – more information is available here.