Imputed Rental Value Switzerland 2026: Zurich Guide

The imputed rental value is the tax item that homeowners in Switzerland argue about the most. And the 2025 development changes everything: the Swiss electorate has voted to scrap it. Just not straight away. Until 1 January 2029 the existing rules remain in force, and from 2026 onwards the canton of Zurich is applying updated valuation guidelines.

This guide pulls together everything you need to know right now: the situation after the vote of 28 September 2025, how the imputed rental value is calculated in Zurich, which deductions you can still claim, and what will actually change from 2029.

What is the imputed rental value

The imputed rental value (Eigenmietwert in German) is a notional income that anyone who owns property in Switzerland has to add to their tax return. The reasoning is simple: by living in your own home, the tax authority assumes you are saving the rent you would otherwise pay to a third-party landlord. That "saving" is then taxed as if it were income.

The idea dates back to 1934, when the Confederation introduced the federal crisis levy during the Great Depression. What started as an emergency measure became a permanent rule with its constitutional anchoring in 1958. Every attempt to abolish it since has been rejected by Parliament or at the ballot box. Until 2025.

Why it exists

The logic of the system rests on equal treatment between tenants and homeowners. A tenant pays rent out of already-taxed income and cannot deduct it. A homeowner without an imputed rental value would, by contrast, enjoy free use of their property and still be able to deduct mortgage interest and maintenance costs: a double tax advantage.

The imputed rental value rebalances that imbalance. In exchange for the notional income, the state grants deductions for:

• mortgage interest paid to the banks;
• actual maintenance costs (repairs, refurbishments, building insurance);
• spending on energy-efficiency upgrades.

The system makes sense on paper. In practice, however, it penalises owners who have paid down their mortgage and those who own a property that has appreciated sharply, where the imputed rental value rises while the deductions shrink. This is precisely why the abolition debate ran for decades.

What happened on 28 September 2025

On 28 September 2025 the Swiss electorate voted on the change of system in the taxation of owner-occupied property. The result: 57.7% in favour. Yes to abolishing the imputed rental value, yes to the full overhaul of the system.

A few months earlier, on 20 December 2024, Parliament had approved the federal decree after years of work. The popular vote was the final hurdle. Now that it has been cleared, the Federal Council has to set the date of entry into force. That decision is expected at the start of the second quarter of 2026, and every signal points to 1 January 2029 as the effective date.

| Milestone | Date | Status | |-----------|------|--------| | Parliamentary approval | 20 December 2024 | Completed | | Popular vote | 28 September 2025 | 57.7% yes | | Federal Council decision on entry into force | Q2 2026 | Expected | | Implementation working group | H1 2026 | In progress | | Public consultation procedure | After Q1 2026 | Scheduled | | Planned entry into force | 1 January 2029 | Scheduled |

Source: Federal Department of Finance (FDF).

What will actually change

The model that was approved is asymmetric, and that is the point most articles miss. It is not only the imputed rental value that disappears: the main deductions that today balance it out also fall away.

| Aspect | Today (until 31.12.2028) | From 1 January 2029 (planned) | |--------|---------------------------|-------------------------------| | Imputed rental value taxed | Yes | No | | Mortgage interest deduction (primary residence) | Unlimited | Heavily restricted | | Maintenance cost deduction | Yes (actual or flat-rate) | Energy-efficiency upgrades only | | Second homes | Imputed rental value applies | Still subject to cantonal imputed rental value |

Put plainly: anyone with a high mortgage paying lots of interest could end up worse off, because they lose the deduction that today offsets the imputed rental value. Anyone with a debt-free, or near debt-free, property comes out clearly ahead. The reform is designed to point in that direction, and the political debate reflects that tension.

The 2026 guidelines in the canton of Zurich

While the Confederation moves on a long timeline, the canton of Zurich has updated its own valuation guidelines for properties from 2026 onwards. These are strictly cantonal rules, applicable to cantonal and communal taxes, but they have an immediate effect on Zurich homeowners' wallets.

The update mainly concerns:

• the fiscal revaluation of properties at the time of purchase or refurbishment;
• the integration of the energy standard into the valuation;
• a more accurate assessment of the actual condition of buildings, in particular older ones.

It is worth noting that in mid-2025 the Zurich Department of Finance announced its intention to waive any general increase in the imputed rental value, a political choice that has tempered owners' concerns. For the precise details, the official communications from the canton of Zurich are the authoritative source.

How the imputed rental value is calculated

In Zurich the calculation follows a formula that is easy to grasp but contains a few moving parts:

Annual imputed rental value = Tax value × Cantonal rate

The rate varies by type of property. Single-family houses sit at 3.5% of the tax value, condominium flats (PPP) at 4.25%. These are average percentages: in some value brackets or for unusual properties, the figure can shift.

Worked examples

| Type of property | Tax value (example) | Annual imputed rental value | Per month | |------------------|---------------------|------------------------------|-----------| | Single-family house in the city | CHF 1'500'000 | CHF 52'500 | CHF 4'375 | | Single-family house in the countryside | CHF 900'000 | CHF 31'500 | CHF 2'625 | | Flat in the city | CHF 1'000'000 | CHF 42'500 | CHF 3'542 | | Flat in the countryside | CHF 600'000 | CHF 25'500 | CHF 2'125 |

These are indicative figures. The tax value of your own property is set out in your tax assessment notice and can vary according to location, year of construction, fittings and energy standard.

At federal level, the Federal Tribunal has set an important benchmark: the imputed rental value cannot fall below 60% of the comparable market rent. Above that line, a whole series of avoidance practices have been blocked over the years by case law.

The three cantonal methods

If you own properties in more than one canton, it is worth knowing that the calculation is not uniform. Switzerland uses three different approaches:

| Method | Cantons | Logic | |--------|---------|-------| | Reference rent | AI, AR, GL, GR, LU, SG, SH, SZ, TI, UR, VS | Comparison with market rents | | Hedonic model | AG, BE, FR, JU, NW, OW, TG | Multi-factor statistical estimate | | Cantonal proprietary method | BL, BS, GE, NE, SO, VD, ZG, ZH | Bespoke cantonal rules |

Zurich falls into the third group: the tax value × rate formula is its specific approach.

Deductions for homeowners

Deductions are where the real game is played. This is where smart planning saves homeowners thousands of francs.

What you can deduct today

| Item | What it includes | Limit | |------|------------------|-------| | Mortgage interest | Interest paid on the mortgage | Unlimited | | Actual maintenance costs | Repairs, replacements, building insurance | Actual spend | | Flat-rate maintenance costs | Alternative to the actual method | 10% of the imputed rental value (new properties / under 10 years) or 20% (over 10 years) | | Energy-efficiency upgrades | Insulation, heating, photovoltaic | Carry-forward up to two subsequent years if it exceeds the threshold | | Administrative expenses | For PPP properties, management costs | Actual |

Each year you can choose between the actual method and the flat rate. There is no lock-in: in a year with little work done, take the flat rate; in the year of a major refurbishment, switch to the actual method. Keep invoices and receipts for at least ten years.

Flat rate or actual: how to decide

| Method | Advantage | Drawback | When it makes sense | |--------|-----------|----------|----------------------| | Flat rate | Zero paperwork, no receipts | Often lower than reality | Years with few expenses | | Actual | Maximises the deduction | Requires full documentation | Years of refurbishment or significant repairs |

The practical rule: if the total documented costs exceed the flat rate, choose the actual method. Otherwise the flat rate saves time without costing you money.

Tax-optimisation strategies

Two timeframes need separating here. The moves that make sense now, up to 2028, and those aimed at preparing for the post-2029 regime.

1. Concentrate maintenance in high-income years

If you know that you will have to replace the boiler, redo the bathroom or change the windows, think about timing. Doing the work in a year with high taxable income maximises the tax benefit, because the deduction pulls you down a tax bracket.

2. Structure the mortgage

A high mortgage today gives you a sizeable interest deduction. After 2029 that deduction shrinks dramatically. If your mortgage matures in the next few years, it makes sense to compare conditions carefully and to consider the structure best suited to the new tax regime.

3. Indirect amortisation via pillar 3a

Instead of paying down the mortgage directly, you pay the same amount into pillar 3a. Twin advantage: the contribution is deductible, and later you can use the 3a capital to clear the mortgage at retirement. We covered this in detail in our piece on the pillar 3a catch-up 2026.

4. Stage major energy-efficiency works

Energy-efficiency works (insulation, heat pump, photovoltaic) are fully deductible, and the carry-forward over two subsequent years allows you to spread large outlays across several tax periods. If you are planning a full refurbishment, splitting it into two or three sites is often more advantageous than doing it all in one go.

5. Think about post-2029

From 2029, barring any last-minute changes, mortgage interest will disappear as a deduction for the primary residence. Ordinary maintenance costs too. Only energy-efficiency upgrades will remain deductible. If you have major work in the pipeline, weigh up bringing it forward to the 2026-2028 window so you can still benefit from the current deductions.

Transition period 2026-2028

Between now and 1 January 2029 nothing changes for the annual calculation: the imputed rental value is taxed, the deductions apply. But your tax planning should already be factoring in the change of regime. Three practical points:

1. Document every expense, even those you are paying in advance. You will need them for your 2026, 2027 and 2028 returns.
2. Check the tax value of your property on the assessment notice. If you believe it has been overvalued, lodging an objection is still worthwhile while the current system remains in force.
3. Plan the mortgage with one eye on 2029. The optimal structure for today's regime may not be the right one for what comes next.

FAQ

When will the imputed rental value be abolished?

The Swiss electorate approved its abolition on 28 September 2025 with 57.7% in favour. The date of entry into force will be set by the Federal Council at the start of the second quarter of 2026, and all signals point to 1 January 2029.

Do I still have to declare the imputed rental value in the 2026 tax return?

Yes. Until 31 December 2028 the current rules apply. For the 2026, 2027 and 2028 tax returns the imputed rental value still has to be declared and the existing deductions remain valid.

How do I find out the imputed rental value of my property?

It is shown on your cantonal tax assessment notice. If you cannot locate it, contact your cantonal tax office. In Zurich, that is the Steueramt.

Can I challenge the imputed rental value if I think it is too high?

Yes. You file an objection within 30 days of receiving the assessment notice. The most common grounds are lower comparable market rents, a poorer state of repair than assessed, or fittings below those estimated.

Does anything change for second homes?

Yes. Second homes remain subject to the cantonal imputed rental value even after 2029, because the reform mainly concerns the primary residence. Holiday homes will continue to generate notional income that is taxed.

What if the property is temporarily vacant?

If the property is genuinely and durably vacant (not simply unused for personal reasons), you can apply for a reduction in the imputed rental value. Practice varies from canton to canton, and for second homes used only a few weeks a year the full imputed rental value still applies.

Do I have to pay social contributions (AHV) on the imputed rental value?

No. The imputed rental value counts only as taxable income for income tax purposes. It is not subject to AHV, IV or other social contributions.

What happens if I sell the property in 2027?

The tax regime in force at the time of sale applies. For 2027 that means the current system, so a pro rata imputed rental value up to the sale date and the corresponding deductions.

Annual checklist for homeowners

To check before each tax return:

• [ ] Verify that the imputed rental value on the tax assessment notice is correct
• [ ] Work out whether the flat rate or the actual method is more advantageous for maintenance costs
• [ ] Collect all receipts for maintenance and energy-efficiency works carried out during the year
• [ ] Document energy-efficiency upgrades separately (carry-forward available)
• [ ] Enter mortgage interest correctly (year-end statement from the bank)
• [ ] In the case of major refurbishment: distinguish between value-preserving (deductible) and value-adding (non-deductible) works
• [ ] Keep all the documentation for at least 10 years

What to do now: three concrete actions

If you are a homeowner in the canton of Zurich, here are the three things we recommend doing in the coming weeks:

1. Pull out the latest tax assessment notice and check that the tax value of your property is still in line with the current market.
2. Compare your mortgage with the conditions currently available. If you are more than two years from the end of the term, ask for an analysis anyway.
3. Plan the energy-efficiency works coming up over the next few years: from 2029 they will be the only deduction left, and today it pays to stage them so you can still tap the deductions that will disappear in three years' time.

Conclusion

The Swiss imputed rental value system is going through its biggest transformation in over sixty years. The popular decision of 28 September 2025 has put the final word on a debate that had been running since 1999. Between 2026 and 2028 homeowners are playing a double game: maximising today's deductions and preparing the household budget for the 2029 tax regime, where it will not only be the taxes that vanish but also the benefits.

For the canton of Zurich, the 2026 guidelines bring more accurate valuations, particularly on the energy standard and the actual condition of the building. No across-the-board increases, but a steadier hand in case-by-case estimates.

For those who plan ahead, there is still room to manoeuvre. For those who put it off, the risk is to find themselves in 2029 with a mortgage structured for a system that no longer exists.

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