An Austrian plot of land previously zoned differently has been rezoned. It is now to be sold. For the tax audit neither the current description in the advertisement nor the statement that the plot has long been in your possession is sufficient. The potential rezoning surcharge requires its own temporal and factual reconciliation.
What the current provision addresses
§ 30 Absatz 6a EStG 1988 captures positive income from the disposal of land and soil rezoned after 31 December 2024 with a surcharge of 30 percent and a statutory revenue cap. [ESTG-30] This does not mean a blanket additional tax of 30 percent on every entire property purchase price.
The BMF information on the introduction refers to disposals of property after 30 June 2025 and explains the distinction from the building. [BMF-UMW] It is used here only for this specified subject matter. Historical examples are not adopted as complete calculations for a sale after a later change in the law.
Obtain the real zoning history
Our editorial recommendation: compile acquisition documents, previous and new zoning information and the associated dates. Specify exactly which areas are affected. An oral statement “now building land” should not remain the only basis for the tax facts.
Ask the tax advisor whether the factual change falls under the relevant tax concept of rezoning (Umwidmung). Not every planning change described that way in everyday language will automatically be treated the same here. Public-law buildability and tax consequences are examined appropriately for their different questions.
A hypothetical sale with a building
An owner sells land and an already existing building together. After a new zoning designation he expects a higher price. For the tax adviser he now needs a comprehensible basis showing which items and areas the total price relates to and how the corresponding allocation is made.
He does not allocate the sum freely according to the desired tax outcome. Instead he obtains the necessary documents and has the concrete sale including the factual allocation reviewed. The article does not name a generally suitable building share.
Separate the surcharge from the rest of the calculation
For the overall review acquisition, asset allocation, possible exemptions and the relevant determination of profit remain important. The surcharge is not the only possible calculation step. Conversely, an earlier classification as long-held possession is not an answer to every consequence of the new zoning.
Note which version and which application date the calculation uses. The amendment consolidating the flat-rate values in § 30 Absatz 4 in the RIS since 30 July 2026 is, pursuant to § 124b Ziffer 498, to be applied for the first time to disposals after 31 December 2026. For sales in 2026 the prior version remains decisive in this respect. The consolidation date alone does not determine this application. [ESTG-124B]
Obtain a comprehensible advisory answer
Ask for the temporal rule applied, the land and soil concerned and the calculation basis to be assigned clearly. A mere bottom line hardly reveals whether, for example, a building was inadvertently included in the same surcharge base.
This is how the new zoning becomes a concretely examined component of your sales budget. The article does not calculate an individual tax nor does it promise a specific structural use. It helps not to replace both questions with a single attractive property designation.