(a one-off levy on wealth is a capital levy).

Typically, wealth taxation involves excluding an individual's liabilities, such as mortgages and other debts, from their total assets. Accordingly, this type of taxation is often referred to as a net wealth tax. , five of the 36 OECD countries had a personal wealth tax (down from 12 in 1990). Proponents often argue that wealth taxes can reduce income inequality by making it harder