Proper is based on data from Statistics Denmark when calculating the adjustment according to the change in net price index. You can find it here.
Below you will find an example for the adjustment on January 1, 2024 based on the October index 2022 - 2023.
Net price index for October 2022: 117.7
Net price index for October 2023: 118.3
Change in % ((118.3- 117.7) * 100) / 117.7 = rounded 0.51%.
Example of a calculation
Annual rent 149,913.60 kr. * 0.51% = DKK 764.56 is the increase.
That means new rent is 149,913.60 + 764.56 kr. = DKK 150,678.16.
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