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Airbnb Rental Arbitrage Calculator

Calculate the profitability of renting a property from a landlord and subletting it on Airbnb — without buying. Ideal for starting in short-term rentals with minimal capital.

Legal Notice

Em Portugal, o subarrendamento requer autorização expressa do proprietário (art. 1088.º CC). Verifique o contrato de arrendamento.

Fixed Monthly Costs

Airbnb Operations

65%

Rendimento tributado em Cat. B (AL). Necessário registo RNAL e autorização do proprietário.

Monthly Results

233 €
Monthly Net Profit
2802 €
Annual Net Profit
56.0%
ROI on Setup Cost
21
Payback Period (months)
Total Monthly Revenue2109 €
Rent−900 €
Utilities−120 €
Setup Amortisation−417 €
Airbnb Fees−53 €
Income Tax−155 €
Monthly Net Profit233 €

Break-Even Occupancy: 54%

Minimum occupancy to cover all fixed costs

How It Works

Rental arbitrage means renting a property at a fixed monthly cost and subletting it on Airbnb at a higher nightly rate. Monthly revenue = occupied nights × nightly rate + cleaning fees. Monthly costs = rent + utilities + setup amortisation + Airbnb fees + cleaning + income tax. Net profit = revenue − all costs. Break-even occupancy is the minimum needed to cover all fixed monthly costs.

Frequently Asked Questions

Is rental arbitrage legal?

Rental arbitrage is legal only with explicit written permission from the landlord. Most standard tenancy agreements prohibit subletting. Always check your lease and get written consent before proceeding. Local short-term rental regulations also apply.

How much capital do I need for rental arbitrage?

The main upfront cost is setup and furnishing (typically €3,000–€8,000 per property). You also need a deposit (usually 1-2 months rent) and the first month's rent. Total initial capital: €5,000–€15,000 depending on the property.

What is a good monthly profit for rental arbitrage?

A monthly net profit of €500–€1,500 per property is typical in major European cities. The key driver is the spread between the nightly Airbnb rate and the daily equivalent of the monthly rent. A ratio of 2.5× or higher is generally needed for profitability.

About This Calculator

This calculator helps real estate investors and aspiring entrepreneurs assess the profitability of an Airbnb arbitrage strategy. It quantifies the potential income generated by subletting a long-term rental property on short-term platforms like Airbnb, comparing it against the long-term rental costs. This tool is crucial for identifying viable opportunities, understanding cash flow, and making informed decisions before committing to a lease agreement for arbitrage purposes.

Methodology Details

1

Input Long-Term Rental Costs

Begin by entering the monthly rent you would pay for the property on a long-term lease, along with any associated monthly expenses such as condominium fees, property taxes (if applicable to the tenant), and insurance. These figures represent your fixed overhead, forming the baseline cost that your short-term rental income must exceed.

2

Estimate Short-Term Rental Income

Next, project your potential monthly revenue from Airbnb. This involves estimating the average nightly rate you can charge and the expected occupancy rate. Research comparable listings in the area, consider seasonal demand, and factor in platform fees to arrive at a realistic gross income projection.

3

Account for Short-Term Operating Expenses

Detail all variable costs associated with short-term rentals. This includes cleaning fees, utilities (which are often higher for short-term guests), supplies (toiletries, linens), maintenance, and any management fees if you use a co-host. Accurate estimation of these costs is vital for true profitability.

4

Calculate Net Monthly Profit

The calculator will subtract your total long-term rental costs and short-term operating expenses from your estimated short-term rental income. The resulting figure is your net monthly profit, indicating the direct financial gain from the arbitrage strategy before considering taxes or initial setup costs.

5

Analyze Return on Investment (ROI)

Finally, the tool will help you understand the efficiency of your investment by calculating key metrics like monthly cash flow and potential annual ROI. This allows you to compare different properties or strategies and determine if the arbitrage opportunity meets your financial objectives and risk tolerance.

Worked Example — Braga, Portugal

For a short-let in Braga, Portugal, compare a 240 000 € property with its local nightly rate, occupancy and licensing costs.

  • →Enter the expected nightly price, realistic occupancy, cleaning and platform costs.
  • →Compare net short-let cash flow with the long-term rental alternative.
  • →Check local registration, community and municipal rules before relying on the estimate.

The outcome is sensitive to local demand, licence rules and seasonality.

Additional Questions