Karpeo · Business in Switzerland
Property yield in Switzerland: calculating gross and net returns
A property yield is meaningful only when the income, expenses and capital behind it are clearly defined. Learn how to calculate gross yield, net operating yield, return on equity and cash flow without confusing the measures.
By Sarah Prieur · Swiss certified public accountant
Which measures should you use?
A property yield expresses income as a percentage of invested capital. Gross yield uses rent before expenses. Net yield takes account of the costs included in its definition. Return on equity incorporates financing and relates the remaining income to the owner’s invested funds.
These measures are not interchangeable. A figure labelled “net” should state whether it is before or after interest, tax, loan principal repayments and exceptional works. Compare properties using the same conventions: a yield on the asking price is not directly comparable with one on total acquisition cost.
This article uses an illustrative directly held rental investment. The figures are neither a market forecast nor a recommendation to borrow.
| Measure | What it shows |
|---|---|
| Gross yield | Rent relative to the purchase price or acquisition cost |
| Net operating yield | Property performance before financing and tax |
| Return on equity | Income after financing relative to personal capital |
| Cash flow | Cash remaining after the receipts and payments included |
| Total return | Cash flows during ownership and net proceeds on sale |
How do you calculate gross rental yield?
The starting formula is annual gross rent ÷ purchase price × 100. It provides an initial comparison, but does not show how much the owner actually keeps.
Annualise rent carefully. A property advertised at a monthly rent does not necessarily generate twelve months of income in its first year. Identify whether the input is potential rent, contractual rent or actual receipts.
Purchase price versus total cost
Assume a property costs CHF 1,000,000, plus CHF 50,000 in fees and initial expenditure. Total cost is CHF 1,050,000, and potential annual rent is CHF 48,000.
- Gross yield on price: 48,000 ÷ 1,000,000 × 100 = 4.8%.
- Gross yield on total cost: 48,000 ÷ 1,050,000 × 100 ≈ 4.57%.
The difference comes from the denominator, not the quality of the property. Total cost is a fuller basis for measuring the resources committed, provided the included expenditure is defined.
Our article on property investment in Switzerland explains the checks to make on the building, rental income and financing.
From gross yield to net operating yield
Deduct the expenses actually borne by the owner. Here, net operating income means rent after vacancy and non-recoverable costs, before financing and tax.
Costs may include management, insurance, routine maintenance and some condominium charges. Treat amounts charged to or reimbursed by tenants consistently: do not deduct them as a final cost if the corresponding income has been excluded.
Work through each assumption
Starting with CHF 48,000 potential rent, allow CHF 2,000 for vacancy and rent losses. Expected rent is CHF 46,000. Deduct CHF 10,000 of non-recoverable expenses to obtain CHF 36,000 net operating income.
Net yield before financing and tax: 36,000 ÷ 1,050,000 × 100 ≈ 3.43%.
| From gross rent to net income | Annual amount |
|---|---|
| Potential rent | CHF 48,000 |
| Estimated vacancy and rent losses | −CHF 2,000 |
| Expected rent after these losses | CHF 46,000 |
| Non-recoverable expenses | −CHF 10,000 |
| Net income before financing and tax | CHF 36,000 |
Avoid deducting the same item twice
If you start with actual rent received, vacancy is already reflected in receipts. Subtracting it again understates the result.
The same issue arises with works. An economic reserve to spread future renovation costs is different from an invoice paid this year. Define the method and avoid deducting both a theoretical allowance and the same actual cost without adjustment.
Initial expenses already included in acquisition cost should not be deducted again every year as recurring charges.
Calculate return on equity and cash flow separately
Financing changes the split between debt and personal capital. It does not, by itself, change the building’s operating income.
Assume a CHF 700,000 mortgage. Against total cost of CHF 1,050,000, invested equity is CHF 350,000. Using CHF 300,000 would incorrectly omit the initial costs funded by the owner.
Income after interest
At a hypothetical 2% interest rate, annual interest is CHF 14,000. Income before tax and principal repayments is 36,000 − 14,000 = CHF 22,000.
Return on equity: 22,000 ÷ 350,000 × 100 ≈ 6.29%.
This exceeds the property’s net yield in the example because borrowing costs less than the operating yield. That illustrates leverage, not a guarantee: borrowing also increases exposure to losses and interest-rate changes.
Interest is not mortgage amortisation
Now assume annual loan principal repayments of CHF 10,000, referred to here as mortgage amortisation. Cash available before tax and exceptional expenditure is 22,000 − 10,000 = CHF 12,000.
This cash flow is approximately 3.43% of equity, different from the 6.29% return calculated before principal repayment. Repayment reduces debt and cash; it is neither interest nor, by itself, an operating expense. It is also distinct from accounting depreciation.
| Measure in the example | Result |
|---|---|
| Gross yield on price | 4.80% |
| Gross yield on total cost | 4.57% |
| Net yield before financing and tax | 3.43% |
| Return on equity after interest, before tax and principal repayment | 6.29% |
| Annual cash flow after principal repayment, before tax | CHF 12,000 |
Which downside scenarios should you test?
A central calculation is not enough. Vary the parameters that could put the project under pressure: rent, vacancy, expenses, works, interest rates and resale value.
Higher borrowing costs
On the same CHF 700,000 mortgage, a hypothetical 4% rate means CHF 28,000 interest rather than CHF 14,000 at 2%. Income after interest falls from CHF 22,000 to CHF 8,000.
After the CHF 10,000 annual principal repayment, cash flow becomes negative CHF 2,000, even before tax or exceptional costs. The property still generates positive operating income, yet the owner must contribute cash. A profitable-looking investment can create a funding need.
Unexpected works or longer vacancy
In the original scenario, an exceptional CHF 20,000 payment not already included in expenses turns the CHF 12,000 cash flow into an CHF 8,000 funding gap that year.
This models a cash effect; it does not determine the accounting or tax treatment of the work. That depends on its nature and the applicable rules.
Set the liquidity reserve separately from the advertised return. The distinction between profit and payments, explained in our article on cash-flow management, is also useful for property projects.
Financing terms remain specific to the lender and application. The 2% and 4% rates used here are simulation assumptions, not available market offers.
Include tax and the eventual sale
For an after-tax return, estimate the taxes actually associated with the project. Applying an arbitrary rate to every cash movement can be misleading.
Private ownership, professional activity and company ownership do not necessarily follow the same rules. The canton, owner’s residence, property location and nature of expenditure also matter.
Use the correct tax bases
Geneva distinguishes property income, fiscal value and deductible expenses. Economically useful expenditure is not automatically deductible immediately. Maintenance and value-enhancing improvements must be distinguished.
Do not treat mortgage principal repayment as deductible interest. Likewise, imputed rental value for personal use should not be added to rent from a wholly let property as though it generated both forms of income.
Measure return over the whole holding period
Total return includes cash flows during ownership and net sale proceeds after selling expenses, any gains tax and repayment of remaining debt.
Do not count debt reduction twice: a lower loan balance already improves the net amount available on sale. Include seller-paid agency fees in the exit calculation too.
To compare different holding periods, an annualised analysis using dated cash flows is more meaningful than dividing total gain by the number of years. Appreciation remains an assumption until the sale takes place.
If your investment model includes a future disposal, account separately for selling costs. Our guide to Swiss real estate agent fees shows how commission and VAT affect the proceeds.
Frequently asked questions
What is the difference between gross and net yield?
Gross yield uses rent before expenses. Net yield deducts the expenses included in its definition. Always state whether the net calculation includes interest, tax and works.
Should purchase costs be included?
Yes, when measuring the return on the total amount invested. A calculation based only on the purchase price is still possible, but must be labelled clearly to avoid misleading comparisons.
Does mortgage amortisation reduce the return?
Repaying principal reduces available cash and outstanding debt. It is not interest or an operating expense. Treat it separately to understand profit and cash flows correctly.
Is a higher return on equity always better?
No. It may result from greater borrowing, which also increases risk and the need for cash when income falls or interest costs rise. The percentage alone is not a sufficient basis for a decision.
Is there one good property yield for every investment?
No. Assessment depends on risk, building condition, location, financing, tax and the owner’s objectives. Compare documented scenarios rather than a supposedly universal threshold.
Sources and references
English edition reviewed on 10 October 2026. Figures are illustrative and calculations use the scope stated above. Primary sources below are in French.
About the author
Sarah Prieur
Sarah Prieur is a Swiss certified public accountant, a partner and head of operations at Karpeo. She supports businesses, self-employed professionals and entrepreneurs with accounting, tax and VAT matters. Before joining Karpeo, she spent eight years in financial audit at PwC Switzerland, progressing to manager.
Read more about Sarah Prieur →