Let us try to keep Porky out of the thread...
According to a Wikipedia article, the following countries currently have a wealth tax: France, Spain, Iceland, India, Netherlands, Norway, and Switzerland.
Yet, another Web site said the following. Note the contradiction regarding Spain.
Some European countries have abandoned this kind of tax in the recent years: Austria, Denmark (1995), Germany (1997), Sweden (2007), and Spain (2008).
On January 2006, wealth tax was abolished in Finland, Iceland, and Luxembourg. In other countries, like Belgium or Great Britain, no tax of this type has ever existed.
Taking France as an example, I see that the first €800K (roughly US$1M) is exempted. After that, the tax rate is progressive from 0.5% at the lowest bracket going to the max of 1.5% for assets above €16.79 (US$22.7M).
According to Wikipedia, French taxable assets that are exempted include: vintage and collection objects (more than 100-year old), artistic, literature, or industrial rights, capital value of pensions and retirement plans, professional goods such as enterprises, etc...
That last item in the above list is of curiosity to me, due to lack of a clear definition by that Wiki article. Another site said that the taxed assets include "owner-occupied housing; cash, fine jewelry, bank deposits, money funds, and
savings in insurance and pension plans; investment in real estate and unincorporated businesses; and
corporate stock, financial securities, and personal trusts."
Note the items that I underlined. That means the typical stock/bond/CDs that are held for investment are taxable including anything that resembles US IRA or 401k accounts, while values of pension plans are exempted as Ha noted earlier.