When living in Norway, we have something called wealth tax. This means the state demands a small percentage of everything you own, if you own more than a certain deduction limit. But here is a very important exception for investors: Stocks and mutual funds have a so-called valuation discount.
A good system for Norwegian investors is to understand how the tax system rewards investing in businesses. If you have 1 million kroner in a regular bank account, the tax authorities calculate this as 1 million in wealth. But if you invest the same million in stocks, they might only calculate the value as 800,000 kroner (with a 20 percent discount). You get a lower wealth on paper, and thus less wealth tax!
Politicians want our money to be used to build jobs and businesses, instead of lying passively in the bank. Therefore, they give us a tax discount to take the risk involved in owning stocks.