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How does RBG determine the WOZ value (property tax base) and what can you do if you disagree?

Soon you will receive the annual assessment of municipal and water board taxes from RBG. The tax assessment shows the WOZ value of your property. The WOZ-page explains how we determine this WOZ value. For example, you will find information on:

  • which data we need to determine a correct WOZ value
  • what role the Valuation Chamber plays

Do you have any questions or do you disagree with the WOZ value?

Then make a call appointment with one of our appraisers. The appraiser will inform you of the WOZ value. And checks with you whether the WOZ value has been determined correctly.

Object if you think the value is incorrect.

You can object via My RBG.

How much will the amount of the assessment decrease if your WOZ value decreases?

You can calculate this independently here: calculate tax assessment. Enter a lower WOZ value here. You can immediately see how much this will save you in property tax and water board tax.

How does the RBG determine the value?

The RBG reassesses the WOZ value on an annual basis. For 2022, the value of your home as of 1 January 2021 applies. This is called the reference date. We use the sales prices of comparable homes between 1 Januari 2020 and 1 januari 2022. We take into account the development of prices during this period. If few sales prices are available, the RBG can also use previous market data.

What homes was my house compared to and what else was factored into the valuation?

That is all set out in your appraisal report. If you log in via My RBG, you can see your valuation report. This shows which characteristics we have factored in. And also, which houses we have compared your house with. Of course, we take into account the differences between the houses.