You could pay more tax due to the WOZ rateable value you receive. You are registered as the owner in the Land Register.
By acquiring the leasehold, your chalet becomes an independent WOZ property, for which you will receive the WOZ rateable value from the municipality every year. You may also be charged other fees, such as sewerage rights.
The WOZ value of the property, if purchased privately, must be included in your annual tax return under box 3 assets. This obligation also applies without a leasehold, so there is no change. Whether you owe taxes and how much ultimately depends on your personal circumstances and the other assets and liabilities in box 3. We recommend you seek professional advice.
The leasehold is registered in the Land Register. It therefore shows that you are the owner of the recreational property.