The True Cost per Night: 6 Hidden Expenses That Reduce Your Profit

A gross income of €150 per night doesn't mean your profit is anywhere near that amount. Most hosts simply subtract the platform's commission and consider the rest to be profit. This is a financial mistake that leads to incorrect pricing and unrealistic expectations.

True profitability lies in a detailed analysis of all costs—both visible and hidden. Understanding each line item allows not only for a more accurate calculation but also for smarter business decisions, from optimizing operations to refining your pricing strategy.

This guide breaks down the six key cost categories that vacation rental hosts in Croatia most often overlook, providing concrete figures and examples for the 2026 season.

— 011. The Cost of Cleaning: Actual Expense vs. Guest Fee

The actual cost of cleaning almost always exceeds the fee paid by the guest. It includes not only staff wages but also the cost of cleaning supplies, professional laundry services, and consumables like soap and toilet paper. The average total cost for professionally cleaning a 50 m² apartment in Split or Rovinj is €50-€70.

The cleaning fee a guest sees on Airbnb or Booking.com often only covers the labor. A professional cleaning service during the high season charges between €40 and €60 for a standard apartment. However, the total cost is higher:

• Cleaning Supplies: Professional-grade detergents, sponges, and cloths add €2-€3 per cleaning.
• Linen Laundry: External laundromats in Dalmatia charge €2.5 to €3.5 per kilogram. For an apartment for four people, this means 8-10 kg of linens and towels, which is an additional cost of €20-€35.
• Consumables (Amenities): Toilet paper, paper towels, trash bags, dishwasher tablets, coffee, tea, and a welcome bottle of water can easily add another €5-€10 per stay.

When all is said and done, the total cost to prepare an apartment for the next guest often reaches €70, while the charged fee is rarely more than €50. That €20 difference directly reduces your profit.

— 022. Platform Commissions: More Than Just a Percentage

Commissions from online travel agencies (OTAs) like Booking.com and Airbnb are the most obvious expense, but hosts often fail to account for additional fees. The standard 15-18% commission on Booking.com applies to the gross booking amount, which includes the cleaning fee, effectively increasing the total cost.

Let's say the nightly rate is €150 and the cleaning fee is €50. The total amount the guest pays is €200. Booking.com will take its 15% commission on the full €200 (€30), not just on the accommodation price. Many hosts overlook this in their calculations.

The commission structure varies:

• Booking.com: The standard commission is 15%. Participating in programs like Genius or Preferred Partner can increase visibility but also raise the commission to 18% or more.
• Airbnb: Offers two models. The most common is the "Split-fee" model, where the host pays around 3% and the guest pays a service fee of about 14%. The other is the "Host-only fee," where the host covers the entire 14-16% cost, which is mandatory for those using channel manager software.
• Payment Processing Fees: If you receive payments directly through the platforms, they use processors like Stripe, which charge their own fee (e.g., 1.5% + €0.25 for European cards, but a significantly higher 3.25% + €0.25 for non-EU cards). This fee is often included in the platform's commission, but it's important to check the terms.

Calculating commissions accurately is crucial for setting a profitable price. It is important to study the terms of each platform in detail to understand the exact fee structure.

— 033. Utilities and Depreciation: The Silent Profit Killers

Utility costs and equipment depreciation represent a significant yet often overlooked expense category. While fixed costs like internet are year-round, electricity and water consumption spike during the high season. Meanwhile, assets like air conditioners and TVs depreciate and require replacement every 5-10 years.

High-Season Utilities: - Electricity: Running the air conditioning for 12+ hours a day in July and August can increase the monthly electricity bill by €100-€200 per apartment. - Water: Frequent guest showers, dishwashing, and potential use of a washing machine significantly increase consumption. - Internet and TV: A fixed cost of €30-€50 per month that is paid even in the off-season, reducing annual profitability.

Equipment Depreciation: Depreciation is an accounting term for the loss of an asset's value over time. It's a real cost because you will eventually have to replace that equipment. A simple way to calculate it is to divide the purchase price by its estimated lifespan.

These five items alone create a monthly cost of nearly €50 that must be factored into your nightly rate.

— 044. Hidden Items: A Fund for Repairs and Damages

Every host should maintain a fund for unforeseen repairs and damages that can't be claimed through a guest's security deposit. The recommendation is to set aside 3-5% of the gross revenue from each booking to cover costs like a broken glass, a clogged drain, or a malfunctioning small appliance.

Security deposits on platforms like Airbnb are for major damages and often require a complex claims process. Minor damages and wear and tear are a normal part of doing business, and the owner bears their cost.

Examples of common costs covered by this fund: - Replacing a set of glasses or plates (€20-€30) - Repairing a window blind or lock (€50-€100) - Replacing a shower head or hose (€25) - Buying new towels due to stains (€40-€60) - An emergency call-out for an electrician or plumber (€100-€200)

Without this fund, one major breakdown, like a water heater failure (a €300-€500 expense), can wipe out the profit from several bookings.

— 055. The Cost of Your Time: Hours You Don't Invoice

A host's own time is the most undervalued resource in the vacation rental business. An average booking requires 2 to 4 hours of administrative and operational work, including guest communication, cleaning coordination, eVisitor registration, and problem-solving. Valuing this time is crucial for understanding true profitability.

The average time cost per booking looks like this:

• Pre- and Post-Booking Communication: Answering inquiries, sending confirmations and arrival instructions (60 min)
• Guest Registration and Check-out in eVisitor: Entering data for each guest's check-in within 24 hours of arrival and check-out within 24 hours of departure (approx. 15 min total per stay). This is a legal requirement under the Hospitality and Catering Industry Act. ^[2]
• Coordination with Cleaning Staff: Notifying them of arrivals, departures, and any special requests (15 min)
• Problem-Solving During the Stay: Helping with Wi-Fi, answering questions about local attractions (30 min)
• Post-Departure Administration: Inspecting the apartment, writing a review, follow-up communication (30 min)

In total, that's about 2.5 hours of work per booking. If you value your time at just €15 per hour, that's a hidden cost of €37.5. Guest communication automation platforms, like BookiApp, can significantly reduce this cost by automating the sending of instructions and answers to frequently asked questions.

A Practical Example: The 'Lavanda' Apartment in Hvar

To illustrate the true cost, let's analyze a hypothetical seven-night booking at the 'Lavanda' apartment (45 m²) in Hvar town.

• Nightly Rate: €180
• Length of Stay: 7 nights
• Gross Revenue: €1,260

As the table shows, the real costs have eaten up 35.7% of the gross revenue. The effective net nightly rate is not €180, but €115.80. The paušalni porez (flat-rate tax), tourist tax, and tourist board membership fee are fixed annual expenses calculated per bed, regardless of revenue or profit, and represent an additional cost on top of the variable costs calculated here. ^[3]

Accurate Calculation Is the Foundation of Success

Ignoring hidden costs leads to overestimating your earnings and threatens the long-term sustainability of your business. Diligently tracking every euro of expenditure isn't pessimism; it's professionalism.

When you know your true cost per night, you can make informed decisions: from setting your minimum price in dynamic pricing tools like PriceLabs to deciding whether to invest in higher-quality equipment that will reduce repair and depreciation costs. Managing a vacation rental is a business, and in any business, the profit is in the details.