Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Robert Kelly is managing director of XTS ...

Cryptocurrencies like Bitcoin gain value from factors like scarcity, utility and security, not physical backing. Common methods to calculate intrinsic worth of a cryptocurrency include Metcalfe’s Law, ...

Marginal utility helps set product pricing; high initial satisfaction decreases with more units. Some stores use bulk pricing when consumers value additional items less. Progressive taxes assume each ...

Effective and marginal tax rates might not be familiar terms. However, they’re essential concepts to understand because they determine how much income you’ll have to fork over to the government every ...