How is rental yield calculated?
How is rental yield calculated?
In Switzerland, rental yield is first calculated by comparing annual rent to the purchase price of the property. The simplest calculation is the gross yield: annual rent ÷ purchase price. But that figure is not enough. To measure the real profitability, you need to calculate the net yield by subtracting at least maintenance costs, a provision for vacancy, acquisition costs and, if there is financing, mortgage interest. This is the calculation that makes it possible to assess the real rental profitability of a property.
With a mortgage, you also need to look at the return on equity, meaning the annual net income divided by the amount actually invested by the buyer. This ratio can be better thanks to leverage, since you tie up less capital. On the other hand, you need to monitor cash flow: a property may look profitable on paper while still generating an annual cash outflow once interest, amortization and the other charges have been paid. To calculate rental yield correctly in Switzerland, you must therefore always distinguish between gross yield, net yield, return on equity and real cash position.
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- What does rental yield really mean in Switzerland?
- Why does a mortgage fundamentally change rental profitability?
- 2 rental yield calculation scenarios
- Acquisition and recurring costs
- What lenders look at beyond yield
- Current legal and tax situation: what affects your calculation
- How can you improve your rental yield?
Rental yield is not just a simple percentage applied to the purchase price. In Switzerland, it depends on the financing structure, the actual rent level, the cantonal acquisition costs, maintenance expenses, rental losses and tax treatment. With a mortgage, the calculation becomes more interesting, but also more misleading : a property may show an attractive rental yield on equity while still generating tight cash flow once interest and amortization have been paid.
For a private investor, the classic mistake is to look only at gross yield, for example annual rent ÷ purchase price. This first headline rental yield is useful, but insufficient. This ratio is helpful for an initial screening, but it is not enough to decide whether a rental yield is truly acceptable. What really matters is rental profitability after realistic costs, and then the rental yield achieved on the equity actually tied up. This is even truer when you finance part of the property with a mortgage. In a Swiss real estate yield project, financing changes how the file must be read.
Here you will find two numerical scenarios for a CHF 800’000.– property, cantonal benchmarks for acquisition costs, and the legal and tax points that change Swiss rental yield. The goal is to help you avoid a bad purchase and make your rental profitability calculation more reliable.
Practical advice : before buying, have both the Swiss real estate yield of the project and its bankability reviewed. An experienced mortgage broker can compare several lenders and keep you from financing a property that looks profitable on paper but not in practice.
What does rental yield really mean in Switzerland ?
The term rental yield refers to the income produced by a property that is rented out, measured either against the purchase price or against the capital actually invested. It is the basis of any serious Swiss real estate yield analysis. Several ratios coexist. They do not all answer the same question.
Gross yield : a quick filter, not a decision
Gross yield is calculated as follows : annual gross rent divided by the purchase price. If a property bought for CHF 800’000.– generates CHF 32’000.– in rent per year, its gross yield is 4%. This figure makes it possible to compare several properties quickly. However, it says nothing about acquisition costs, maintenance, vacancy, non-recoverable charges or financing. Used on its own, it almost always flatters the file.
Net yield : the real start of the analysis
Net yield deducts the costs necessary to operate the property. Depending on the method used, you will deduct at a minimum current maintenance, likely rental losses and, in a cash-oriented approach, mortgage interest. This is where the same property can move from an “attractive” rental yield to an ordinary result. In Switzerland, many buyers underestimate annual maintenance.
Return on equity : the ratio that changes everything with a mortgage
Return on invested capital measures what your own capital actually produces. Its basic formula is simple : annual net income divided by the equity you have committed, including acquisition costs that were not financed. This is where leverage appears and where rental yield on equity changes its shape. A mortgage can improve your return on equity because you commit less capital. But that better ratio does not automatically mean the property “pays for itself”.
Why does a mortgage fundamentally change rental profitability ?
When a property is bought in cash, the calculation is relatively stable : net income depends mainly on the rent level, costs and taxation. With a mortgage, you add a decisive layer : the cost of debt. That is where the difference between rental profitability and cash flow comes in.
Leverage can improve return on equity
Assume your property earns more than the cost of interest. In that case, debt acts as leverage : you invest less equity and the return on your equity contribution increases. This is why some medium-yield properties become interesting once they are financed intelligently. But this effect is positive only if the gap between net rental income and interest expense remains large enough.
Amortization is not a loss, but it reduces cash position
Many investors make a reading mistake when it comes to amortization. Amortization is not an economic expense in the same way as interest : it turns cash into equity in the property. Your net worth can therefore rise even while your annual cash flow becomes weak or negative. That is why a property can show a good Swiss rental yield on invested capital, an acceptable rental yield on paper, and still remain uncomfortable in day-to-day terms. This gap is common in Swiss rental yield.
Another often overlooked point is that the bank does not think the way you do. It does not look only at the expected rental income. It applies its own safety margins, its own view of the property, its reading of rental risk and its internal requirements for income-producing properties. Since 1 January 2025, FINMA has also reminded the market that income-producing properties carry higher risk weights than owner-occupied homes, which pushes some lenders to remain more selective on the loan-to-value ratio or on the valuation of the property price.
2 simple rental yield calculation scenarios for a CHF 800’000.– property
To compare two financing structures properly, let us use a simple and prudent national assumption. The property is worth CHF 800’000.–. The annual gross rent assumed is CHF 32’000.–, or 4% of the purchase price. Acquisition costs are set at 3% of the price, i.e. CHF 24’000.–, which is a reasonable Swiss working average even though the real cost varies sharply by canton. Current maintenance is provisioned at 1% of the price, i.e. CHF 8’000.– per year.
Important : these tables are indicative. Any rental profitability calculation must then be adapted to the actual property. They do not take into account personal taxation, detailed non-recoverable charges, prolonged vacancy or future major works. They are meant to show the mechanics of rental yield with and without a mortgage, and therefore the difference between stated rental yield and yield that can actually be collected.
Scenario 1 : purchase with a 60% mortgage over 10 years, 2% rate, 5% amortization per year
| Category | Assumed value | Comment |
|---|---|---|
| Price | CHF 800’000.– | Property acquisition value |
| Equity contribution | CHF 320’000.– | 40% equity |
| Mortgage amount | CHF 480’000.– | 60% of the price |
| Acquisition costs (notary, transfer tax, land register, etc.) | CHF 24’000.– | Working assumption at 3% |
| Annual gross rent | CHF 32’000.– | Gross yield assumption at 4% |
| Annual debt interest | CHF 9’600.– | 2% on CHF 480’000.– |
| Annual amortization | CHF 14’400.– | 3% of the initial mortgage amount |
| Maintenance costs | CHF 8’000.– | Annual provision at 1% |
| Annual yield on purchase price | 1,8% | (32’000 – 9’600 – 8’000) ÷ 800’000 |
| Annual return on invested capital | 4,30% | (32’000 – 9’600 – 8’000) ÷ (320’000 + 14’400) |
| Cash flow after amortization | CHF 0.– | 32’000 – 9’600 – 8’000 – 14’400 |
This first table shows why an investor can be mistaken if they look at only one rental yield indicator. Return on equity is better than in a cash purchase thanks to leverage. On the other hand, cash flow is zero in this case if 3% annual amortization is imposed. The property creates wealth, but it does not generate additional cash.
Scenario 2 : purchase without a mortgage
| Category | Assumed value | Comment |
|---|---|---|
| Price | CHF 800’000.– | Property acquisition value |
| Equity contribution | CHF 800’000.– | 100% equity financing |
| Mortgage amount | CHF 0.– | No debt |
| Acquisition costs (notary, transfer tax, land register, etc.) | CHF 24’000.– | Working assumption at 3% |
| Annual gross rent | CHF 32’000.– | Gross yield assumption at 4% |
| Annual debt interest | CHF 0.– | No interest expense |
| Annual amortization | CHF 0.– | No debt repayment |
| Maintenance costs | CHF 8’000.– | Annual provision at 1% |
| Annual yield on purchase price | 3% | (32’000 – 8’000) ÷ 800’000 |
| Annual return on invested capital | 2,91% | (32’000 – 8’000) ÷ (800’000 + 24’000) |
| Cash flow after amortization | CHF 24’000.– | 32’000 – 8’000 |
In a cash purchase, the project is more stable. Cash flow is positive and easy to read. On the other hand, your tied-up capital is much higher, which reduces the return on invested capital. Numerical conclusion : debt can improve rental profitability on equity, but at the same time it can reduce annual disposable income if amortization is heavy.
The correct reading of the two scenarios is this : if your priority is annual disposable income, a debt-free purchase is more comfortable. If your goal is to optimize the capital committed, a mortgage structure can make sense, provided your cash position can absorb amortization and unexpected events.
Acquisition and recurring costs
Acquisition costs vary significantly by canton and change rental yield
The property transfer taxes, registration duties, land register fees and notary fees differ from one canton to another. That is why the same property can show a noticeably different rental yield on invested capital depending on where it is bought, even if the price and the rent are identical.
The canton of Vaud levies a transfer tax at a rate of 2.2%. A municipal component may be added depending on the municipality. For a rental investment, the entry cost therefore quickly exceeds the national working assumption of 3% once transfer tax, registry and notary costs are added together.
The canton of Bern levies a transfer tax of 1.8% of the consideration. There is a relief under certain conditions for a primary residence, but that advantage should not be confused with a rental purchase.
The canton of Zurich has no longer charged transfer tax since 1 January 2005. That does not mean the purchase is “free”, but rather that the cost structure relies more on fees and deed charges.
In the canton of Geneva, the sale registration duty is 3% of the price. Geneva also applies the Casatax scheme to a primary residence within certain limits and occupancy conditions. This mechanism is not a standard advantage for a rental investment. Many buyers read about Casatax and wrongly believe that the reduction also applies to a purchase intended for letting.
Maintenance, vacancy and taxation : the items that distort the calculation
Setting aside 1% per year for maintenance is a teaching baseline, not a universal truth. A recent building may cost less at the beginning. An older or poorly renovated building may cost much more. In addition, the national statistical vacancy rate is not a guarantee of continuous letting. The FSO recorded a dwelling vacancy rate of 1% on 1 June 2025 for Switzerland as a whole, with marked differences between cantons. In other words, assuming zero vacancy is not serious, even in a tight market.
A common trap is to replace real expenses with tax deductions alone. That is a classic way to overstate rental yield. It is a mistake. A flat-rate maintenance deduction is not rent received. Amortization is not an accounting loss in the economic sense. And a future tax benefit is not a certainty. The correct order of analysis is as follows: first the property’s economic yield, then taxation, and finally financing. Reversing that order often leads to overpaying for the property.
What the bank looks at in addition to Swiss real estate yield
An investor thinks in terms of rental yield. The bank thinks in terms of risk. This gap explains why a file that appears logical may be refused or financed less well than expected.
Equity, collateral value and safety margin
Under the minimum standards recognized by FINMA, a minimum 10% share of equity not coming from the 2nd pillar is required for mortgage financing, and the debt must in principle be reduced to two thirds of the collateral value within a maximum of 15 years for transactions that fall within this framework. But for income-producing properties, many lenders apply a stricter reading of risk, whether in the amount of equity required, the value accepted or the rent taken into account.
A good lender does not settle for the current rent. It asks what happens if the market turns, if the property stays vacant, if costs rise, or if the price paid is too high relative to the collateral value. That is why a mortgage broker adds value : they do not just look for a rate, they look for a financing structure that survives a demanding bank assessment.
In practical terms, if your goal is to preserve your cash position, insist on an analysis that clearly separates rental yield from several angles : gross yield, net yield, return on equity and cash flow after amortization.
Current legal and tax situation in Switzerland : what affects your calculation
Rental yield does not change only with rents and bank rates. Swiss rental yield also depends on the legal framework. Two points deserve particular attention.
Reference rate for rents : do not confuse your debt cost with the rent that may legally be charged
At federal level, the reference interest rate that determines rents is set by the Federal Office for Housing. It stands at 1.25%, unchanged as of 3 March 2026. This rate is separate from your fixed-rate or SARON mortgage. In other words, if your financing changes, your rental margin does not automatically move up or down with it. For a property that is already let, the ability to adjust the rent depends on the lease, the reference rate, the other permitted cost factors and the concrete circumstances of the file. Once again, Swiss rental yield is never a simple transposition of your mortgage cost.
Imputed rental value reform : real impact, but it must be read correctly by an investor
On 1 April 2026, the Federal Council set 1 January 2029 as the entry-into-force date of the housing taxation reform that abolishes imputed rental value for owner-occupied homes. The interesting point for an investor is this : for serious rental profitability, taxation must be put back in the right place in the model. The removal of the maintenance cost deduction does not affect everyone in the same way, because the Federal Council specifies an exception for properties that are rented out or leased. At the same time, the deductibility of passive interest will be limited in proportion to the share of rented or leased properties in total wealth.
The practical consequence is simple : do not build an imaginary tax advantage into your Swiss rental yield. For a property that is rented out, you need to read the future implementing rules and your overall wealth situation before drawing conclusions. The reform is real, but its effect is not identical for an owner-occupier and a rental investor.
How can you improve your rental yield without fooling yourself?
The best way to improve rental profitability is not to force a spreadsheet, but to achieve a defensible rental yield.
- Buy on the basis of net yield, not just gross yield.
- Always add acquisition costs to invested capital. Otherwise, your return on equity is artificially inflated.
- Separate yield from cash flow. A property can be good from a wealth perspective and uncomfortable on a monthly basis.
- Test a less favorable scenario : lower rent, vacancy, higher maintenance, more expensive rates at renewal.
- Have the project reviewed by a financing specialist. A broker can negotiate with several lenders, detect punitive clauses and check whether the structure remains consistent with your profile, your tax position and your holding horizon.
On a website specializing in mortgage lending in Switzerland, it is better to be direct : an income-producing property is interesting only if the numbers still hold after the usual bad news. If your calculation assumes zero vacancy, little maintenance, minimized acquisition costs and permanently favorable taxation, your yield is not solid. It is simply an optimistic scenario.
Do you want a concrete project assessed ? Before signing, ask for a full review of the file : financing capacity, lender comparison, the impact of the canton on acquisition costs, net yield, return on invested capital and cash flow after amortization. That is the simplest way to avoid a merely apparent yield.
Disclaimer : this content is for information purposes only and does not constitute individual tax advice, a financing promise or a rate offer. The figures for rents, maintenance, vacancy and acquisition costs are indicative. They vary according to the property, canton, lender, borrower profile, wealth structure and legal developments. A serious rental yield calculation must always be adapted to the specific file. A Swiss real estate yield that is well presented but poorly parameterized remains a bad calculation.
Sources used
- FOH : reference interest rate.
- FSO : vacant dwellings 2025.
- FINMA / SBA : minimum standards and mortgage risk.
- FDF / FTA : housing taxation reform, entry into force on 1 January 2029.
- Vaud, Bern, Zurich, Geneva : transfer taxes, registration duties and cantonal rules applicable to acquisition costs.
