Anything that a jurisdiction has declared to be
money. Historically, legal tender
currency has been based on something like
gold or
silver; however, most money is now
fiat money. That is, fiat money is that which has been declared to be legal tender by a government and would not be regarded as such without government backing. Legal tender may be used to pay a
debt. In general, a merchant who does not accept legal tender currency has the debt canceled; that is, one is required to accept the legal tender or nothing at all.