Is the saved brokerage commission allowed as a deduction for property gains tax?

Deduction of brokerage commission

No, the saved brokerage commission cannot be deducted from property gains tax. Swiss tax law follows the reality principle: Only costs that have actually been incurred and can be substantiated by an invoice can be deducted. Notional costs or your own working time are not deductible. Anyone who sells without a real estate agent saves the commission, but can only deduct the actual advertising costs, notary fees and similar third-party expenses paid from the profit.

The reality principle: Only what has been paid counts

In Swiss tax practice in 2026, the principle of “effective costs” is irrefutable. property gains tax is based on the difference between the investment price at that time (purchase price plus value-adding investments) and the current selling price, minus actual sales costs.

Tax authorities only accept amounts that have led to an outflow of funds from the taxpayer as a deduction. Since you did not transfer any commission to a third party when selling privately, your taxable profit is mathematically higher than when selling with an real estate agent. The tax authorities do not see this as a “punishment” of personal expenditure, but as a simple illustration of real cash flows. In short: Where there is no invoice, there is no deduction.

Your own working time: A zero-sum tax game

A common point of contention before cantonal tax appeal commissions is the crediting of one's own working time. Many private sellers invest hundreds of hours in preparing the dossier, carrying out viewings and negotiating with banks.

From a legal point of view, however, this work is considered personal contribution to one's own assets. If the state were to allow this period as a deduction, it would therefore have to tax it on the other hand as income — which would not ultimately benefit most owners. As a result, your own workforce remains tax-neutral when selling real estate. For you, this means that your effort is rewarded by the saved commission, which remains in your gross wallet, but it does not reduce the tax base for property gains tax.

What you can deduct instead when selling privately

Even though the large brokerage commission position is omitted, many private sellers underestimate the sum of the small amounts. In 2026, the costs of professional marketing increased even without a real estate agent. All expenses directly related to the sale are deductible — provided you keep the receipts.

Advertisement and portal costs

Fees for listings on major Swiss real estate portals have risen significantly in recent years. Whether individual subscription or runtime subscription: These costs are fully deductible. Store digital receipts carefully.

Professional media production

In order to keep up with the professionals in the current market, many private sellers hire photographers for high-end images, drone shots or the creation of virtual 3D tours. Since these are invoices from third-party companies for sales purposes, these costs are usually easily accepted by tax offices.

Preparation of mandatory documents

As we have seen in previous guides, a current GEAK (building energy certificate) in 2026 is often mandatory or at least strongly recommended. The costs for the energy consultant who prepares this document are considered necessary ancillary sales costs and reduce the taxable profit. The same applies to the land register extract or the collection of current estimates from certified experts.

Legal and construction deductions

In addition to pure marketing costs, there are other items that are often forgotten when you handle the sale yourself.

Legal advice

Have you brought in a lawyer or a specialized advisor to review the purchase contract or to make the reservation agreement legally secure? These fee notes are deductible as sales expenses.

Clearing and cleaning

A property often has to be vacated (disposal of old furniture) or professionally cleaned before it is sold in order to leave a good impression during the visits. Invoices from cleaning companies or cleaning companies can also be claimed, provided that they are used directly for sale.

The importance of documentation in 2026

Tax offices have become more efficient but also stricter in the digital age. A handwritten note is no longer enough today. In order to get your deductions through when selling privately, you must be able to present a complete collection of documents.

It is advisable to create a separate folder (digital or physical) right from the start of the sales process, in which every invoice, however small, ends up. When you fill out the real estate gains tax return at the end of the process, you can summarize these items under “Sales expenses.” Even if the sum of these small expenses does not reach the brokerage commission, it can still mean several thousand francs in tax savings at a high tax rate.

Strategic comparison: real estate agent vs. private sale

So is private sale worthwhile despite the lack of deductibility of the “saved” commission? This is a purely economic consideration.

If a real estate agent, through his network and negotiation experience, achieves a selling price that is more than 3% above your private selling price, he has in fact financed himself — and his commission is also tax-deductible, which depresses the tax bill. However, if you trust that you will get the same price as a professional, you will receive the saved commission as net profit, even if you have to pay a little more property gains tax on it.

Conclusion: No fictitious deductions in Switzerland

Is the saved brokerage commission deductible? The answer is a resounding no. The Swiss tax authorities do not allow air bookings. Only those who spend money can claim the deduction. If you get involved yourself, you save costs, but at the same time increase your taxable profit.

In summary, when selling privately, focus on meticulously collecting all effective expenses — from drone recording to notary draft. In 2026, proper owner due diligence, even when filing a tax return, is the key to not paying more than is required by law. The profit from the sale of your property is your success — professional documentation ensures that this success is not unnecessarily reduced by tax omissions.

glossary

• Effective costs: Expenses actually incurred and verifiable that can be deducted from tax.
• Sales expenses: A collective term for all costs that arise directly as a result of the sales process (advertisements, fees, reports).
• Personal contribution: Work that the owner himself does on his property or to sell it (not tax-deductible).
• investment costs: The original purchase price plus value-enhancing investments (e.g. energy-efficient renovation).
• Owner due diligence: The careful review and documentation of all financial aspects of real estate ownership and sale.