VAT on Real Estate Development Projects 2026
Key Differences Between the Sale and Lease of Units and How to Retain Your Right to a Deduction
VAT on development projects in 2026 depends on whether units are sold, rented or their use changes, because each option affects the VAT treatment and the right to deduct input tax. Mistakes in timing rules or the classification of social housing can significantly reduce project margins. This article explains what to plan from the start, how to protect VAT deductions and when reconstruction can change the tax treatment.
Key takeaways
VAT on Real Estate Development Projects: The Reality in 2026
While the exemption periods for income tax have been extended (from 5 to 10 years), in the area of VAT, the key threshold remains 5 years (60 months). The VAT Act, as applicable for 2026, stipulates that after this period from the first occupancy permit, the supply of immovable property is exempt from tax.
For developers undertaking projects with multiple units or combining rentals with sales, correctly determining this moment is crucial. It determines whether you will be able to claim (and retain) a VAT deduction on inputs (construction materials, services, design work) or if you must return it to the state.
The ARROWS law firm's Prague-based lawyers, specializing in tax obligations in the construction industry, will prepare you for these rules and ensure your tax strategy reflects the true nature of your project. We handle complex situations where a single project involves various tax regimes simultaneously (apartments, commercial spaces, social housing) and know how to plan and manage them correctly from the outset.
What the 5-Year Time Test and "First Supply" Mean
The key to understanding the legislation lies in Section 56 of the VAT Act. A taxable supply is the transfer of immovable property (a building or unit) made within 5 years (60 months) of the issuance of the first occupancy permit. The same rule applies to an occupancy approval or the day the building was first put into use.
Any subsequent sale of the same unit after this period is automatically exempt from VAT, which also means the seller is not entitled to a deduction of input VAT from this sale.
In practice, this means that if a developer obtains an occupancy permit for an apartment building on August 1, 2024, the five-year period runs until August 2029. If they sell an apartment in 2026, it is a taxable supply at a rate of 21% (or 12% for social housing), and they can claim a full deduction on inputs.
If they were to sell the same apartment in September 2029, the sale is already exempt by law. In this case, the developer cannot claim a VAT deduction or (if they have already claimed it) must make an adjustment to the deduction and return a portion of the VAT. This rule is not just a theoretical exercise—the Prague-based lawyers at ARROWS law firm handle it with developers who have had to deal with errors in cash-flow planning and pricing.
Rental vs. Sale: Two Completely Different Tax Worlds
The difference between a sale and a rental in the context of VAT is fundamental and often underestimated in practice. The sale of a unit within the 5-year time test is taxed (at 21% or 12%), allowing the developer to claim a full VAT deduction on all inputs. In contrast, the rental of immovable property intended for housing is, according to Section 56a of the VAT Act, exempt from tax with no right to a deduction.
If a developer plans to rent out some apartments (a "build-to-rent" model) and sell others, they must differentiate their inputs from the beginning and potentially proceed by reducing their claim for VAT deduction.
An even more common situation is when a developer builds apartments with the intention to sell (claiming a full VAT deduction) but decides to temporarily rent them out due to market conditions. This constitutes a change in the use of the asset. In such a case, an adjustment of the tax deduction under Section 78 et seq. of the VAT Act applies, with the monitoring period for real estate being 10 years.
If a developer completes an apartment in 2025 and begins renting it out for housing in 2026 (an exempt supply), they must return one-tenth of the claimed deduction to the state for each year of rental within the ten-year period.
An error in this calculation or an omission of this obligation leads to a tax assessment and penalties. ARROWS law firm helps clients navigate this labyrinth. We will create a detailed plan for you on how to set up deductions and how to process any changes in the use of the building.
Substantial Change to a Building and the Risk of Resetting the Period
One of the risks in the legislation is the concept of a substantial change to a building. According to Section 56(5) of the VAT Act, the five-year exemption period is interrupted and starts anew from the issuance of an occupancy permit (or approval) for a substantial change to a completed building.
In practice, this means that if a developer buys an older building that is already well outside the time test and carries out extensive renovations on it (e.g., an extension, an addition, or a major overhaul requiring a building permit), it may be considered a substantial change.
If they then sell this improved property, the sale is again considered a taxable supply (VAT at 21% or 12%) because a new 5-year test has started. An investor who calculated that the sale would be exempt (because "the building is old") suddenly finds themselves obligated to pay VAT on the entire sale price.
The Czech Tax Administration assesses a substantial change primarily based on whether a new occupancy permit has been issued and whether the value of the modifications has significantly increased the value of the building.
ARROWS law firm helps clients avoid these surprises. We will assess whether your planned renovation meets the criteria of a substantial change and prepare a tax strategy for the sale to minimize your risks.
Adjusting the Right to VAT Deduction when Combining Rentals and Sales
For developers undertaking projects with multiple units and planning to rent some and sell others, the adjustment of the tax deduction under Section 78a of the VAT Act is key. The monitoring period for real estate is 10 years.
How does it work in practice? Let's assume a developer builds a house and claims a full VAT deduction (with the intention to sell). However, if they decide not to sell some apartments but to rent them out (exempt), they must make an adjustment to the deduction.
For each year the apartment is rented out (and thus used for an exempt activity), the developer must return 1/10 of the originally claimed deduction attributable to that apartment.
Example:
Input VAT for a specific apartment: CZK 500,000.
The developer rents the apartment for 4 years (exempt).
They must return 4 × (1/10 of CZK 500,000) = CZK 200,000 to the state.
If they sold the apartment after 4 years, they could keep the remaining 6/10 of the deduction.
The calculation is complex if the regime changes during the year (e.g., vacant for part of the year, rented for another part). This requires precise record-keeping.
Risks and Penalties | How ARROWS Helps (consultation@arws.cz) |
Incorrect determination of the time test: If you sell a unit believing the 5 years have passed, but the period is still running, the tax office will assess 21% VAT on the sale price + penalties. | Legal analysis and audit: ARROWS law firm will precisely determine the running of the periods for each unit based on occupancy permits and the date of first use. |
Omission of deduction adjustment: If you start renting out apartments (instead of selling) and do not return the proportional part of the VAT (deduction adjustment), you risk a tax assessment and late payment interest. | Process setup: We will help set up an asset tracking system so that at the end of the year, you automatically know which units require a VAT deduction adjustment. |
Substantial change and taxation: Renovating an old building restarts the 5-year test. Unexpected taxation of the sale can wipe out the project's margin. | Investment assessment: We will assess in the preparatory phase whether the renovation meets the criteria of a substantial change and whether the subsequent sale will be subject to VAT. |
Incorrect rate for social housing: Applying 12% VAT to a building that does not meet the definition of social housing (e.g., apartments over 120 m²), leads to an assessment of the difference up to 21%. | Project documentation review: We will verify that the project meets the legal definitions for the reduced VAT rate and ensure the correct wording of contracts. |
Reverse charge mechanism (RPDP): Failure to report received construction work under the reverse charge mechanism in the tax return leads to fines. | Tax supervision: ARROWS law firm will ensure that invoices under the reverse charge mechanism are correctly reported. |
VAT Rate for Social Housing Construction: 12%
In 2026, the reduced VAT rate of 12% for the construction and supply of buildings for social housing continues to apply (following changes in the consolidation package). The condition is that the building must meet the legal definition, i.e., an apartment up to 120 m² or a family house up to 350 m².
This rate applies both to the sale itself (if within the 5-year time test) and to construction and assembly work related to the construction or renovation of such a building. For a project worth CZK 100 million, the difference between 21% and 12% is a full CZK 9 million, which is a crucial factor in price calculation.
Beware of the correct calculation of floor area according to Government Regulation No. 366/2013 Coll. (areas under walls are included, but not balconies or terraces unless they are enclosed). An error of a single square meter in the calculation can mean a jump from a 12% rate to 21%. ARROWS law firm recommends having the measurements verified during the project phase.
Correct Timing of the Sale: How to Eliminate the Risk of Unexpected Tax Impacts
The five-year exemption period is a critical point. A developer who obtains an occupancy permit for a building on August 1, 2024, has two options: either sell within 5 years (taxable supply, right to deduction remains) or sell after 5 years (exempt supply, no right to deduction/must be returned).
In practice, it sometimes happens that a developer "misses" the 5-year deadline, and the sale becomes exempt against their will. This means they cannot claim input VAT (or must return the previously claimed deduction for the remaining years of the 10-year period). This can be financially disadvantageous if construction costs were high.
Conversely, if a developer knows they will be renting out apartments long-term, they should assume from the outset that they will not have the right to a deduction. ARROWS law firm will help you develop a tax plan for the project that focuses on the timing of sales and the optimization of VAT deductions to avoid financial losses due to incorrect timing.
How to Avoid the Biggest Mistakes in 2026
The lawyers at ARROWS law firm have identified the five most common mistakes developers make:
Confusing time tests. A developer confuses the 5-year test for VAT with the 10-year test for income tax. These are two different taxes with different rules.
Ignoring the deduction adjustment. A developer starts renting out unsold apartments but forgets to make the VAT deduction adjustment in their tax return (returning 1/10 annually).
Substantial change without awareness of the risks. A renovation is considered a "repair," but under VAT law, it is a substantial change that triggers new taxation on the sale.
Incorrect definition of social housing. An apartment is 121 m², but the developer applied 12% VAT. The tax office will assess the 9% difference plus penalties.
Not addressing the regime in advance. The developer decides on the VAT treatment only at the time of sale, when it is too late to optimize inputs and contractual relationships.
All these mistakes can be prevented if the project is prepared with a lawyer and a tax advisor from the preparatory phase.
Practical Steps: How to Prepare Your Project for 2026
If you are planning a development project in 2026, we recommend following these steps:
Step 1: Use Strategy (Project Phase). Define whether the goal is sale, rental, or a combination. Verify the measurements for social housing.
Step 2: Tax Analysis. Have ARROWS law firm assess the VAT regime for inputs (full deduction vs. reduced deduction).
Step 3: Monitor Deadlines. Carefully record the date of the first occupancy permit. Set a reminder for the approaching end of the 5-year period.
Step 4: Asset Records. Keep records for each unit for the purpose of deduction adjustments (change from sale to rental and vice versa).
Step 5: Regular Review. At the end of each tax period, verify whether it is necessary to make a deduction adjustment according to the VAT Act.
Conclusion
The year 2026 requires precision from developers. The VAT rules concerning the 5-year time test, deduction adjustments, and rates for social housing are strict. Errors in tax planning can cost you millions of crowns in returned VAT and penalties.
The Prague-based lawyers at ARROWS law firm deal with this issue daily and can provide you with a comprehensive legal and tax strategy. Do you already have a project underway and want to verify that it is set up safely from a tax perspective?
Contact ARROWS law firm at consultation@arws.cz and secure professional legal advice. With more than 150 joint-stock companies and 750 limited liability companies in our client base, we have experience with projects of all sizes.
About the author
Disclaimer:
The information contained in this article is for general informational purposes only and serves as a basic guide to the issue as of 2026. Although we strive for maximum accuracy, laws and their interpretation evolve over time. We are ARROWS Law Firm, a member of the Czech Bar Association (our supervisory authority), and for the maximum security of our clients, we are insured for professional liability with a limit of CZK 350,000,000. To verify the current wording of the regulations and their application to your specific situation, it is necessary to contact ARROWS Law Firm directly (consultation@arws.cz). We are not liable for any damages arising from the independent use of the information in this article without prior individual legal consultation.