An analysis of various indicators for the tax years 2010-2023 reveals several trends in the planning gains levy. During this period, 640 RUPs were approved, with a total of 16,538 plots subject to planning gains tax. The largest areas of planning gains are found in the provinces of West Flanders and Antwerp. Between 2010 and 2023, VLABEL assessed a total of €401 million in planning gains tax. However, a significant portion of this amount must be deducted due to non-assessable values, such as exemptions, objections, or the annulment of a RUP. On average, the invalidations amount to 64% of the assessed amount, which means that the effective collectible amount is approximately €144 million. Because the levy is only payable upon commencement, it often takes some time before it is actually collected. For the period 2010-2023, €84 million has already been effectively collected. This leaves approximately €60 million outstanding, but it is uncertain whether this full amount will ever be collected. In some cases, a triggering event never occurs, or takes a long time to occur.