The official name in Czech is koruna česká (plural koruny české, though the zero-grade genitiveplural form korun českých is used on banknotes and coins of value 5 Kč or higher). The ISO 4217 code is CZK and the local acronym is Kč, which is placed after the numeric value (e.g., "50 Kč"). One koruna equals 100 haléřů (abbreviated as "h", singular: haléř, nominativeplural: haléře, genitiveplural: haléřů - used with numbers higher or equal to 5 - e.g. 3 haléře, 8 haléřů).
The Czech koruna replaced the Czechoslovak koruna when it was introduced in 1993 after the dissolution of Czechoslovakia. It first consisted of overstamped 20, 50, 100, 500, and 1000 Czechoslovak koruna banknotes, but a new series was properly introduced in 1993.
The Czech Republic planned to adopt the euro in 2012, but its government suspended that plan in 2007. Although the country is economically well positioned to adopt the euro, there is considerable opposition to the move within the Czech Republic. According to a survey conducted in January 2011, only 22% of the Czech population was in favour of replacing the koruna with euro.
In 1993, coins were introduced in denominations of 10, 20 and 50 haléřů, 1, 2, 5, 10, 20 and 50 korun. The 10 and 20 haléřů coins were taken out of circulation by 31 October 2003, and the 50 haléřů coins were withdrawn from circulation on 31 August 2008 due to their diminishing purchasing power and circulation.
In 2000, the 10 and 20 korun coins were minted with different obverses to commemorate the Millennium. In in 1993 & 1994 coins were minted in Winnipeg and Hamburg then in the Czech Republic. All circulation coins were designed by Ladislav Kozak (1934-2007).
Since 1997, sets for collectors are also issued yearly with proof quality coins. There's also a tradition of issuing commemorative coins - including silver and gold coins - for numismatic purposes.
The first Czech banknotes issued on 8 February 1993 consisted of Czechoslovak notes with adhesive stamps affixed to them. Only the 100, 500 and 1000 korun denominations were overstamped, the lower denominations circulated unchanged during this transitional period. Each stamp bears a Roman and Arabic number identifying the denomination of the banknote to which it is affixed (C and 100, D and 500, M and 1,000). Subsequent issues of the 1,000-korun note replaced the adhesive stamp with a printed image of same. 
A newly designed series of banknotes of denominations 20, 50, 100, 200, 500, 1000 and 5000 korun were introduced later in 1993 and are still in use at present - except for the first versions of 1000 and 5000 korun notes, since the security features of these notes were upgraded in the subsequent issues (The 2000 korun note, which has been introduced in 1996, is still valid in all versions, with and without the new security features). These banknotes feature renowned Czech persons on the obverse and abstract compositions on the reverse. Modern protective elements can be found on all banknotes.