The Bangladeshi taka (টাকা, sign: ৳ or Tk, code: BDT) is the currency of the People's Republic of Bangladesh. Issuance of banknotes ৳10 and larger is controlled by Bangladesh Bank, and for the ৳2 and ৳5 banknotes, which are the responsibility of the Ministry of Finance of the government of Bangladesh. The most commonly used symbol for the taka is "৳" and "Tk", used on receipts while purchasing goods and services. ৳1 is subdivided into 100 poisha.
The word taka is a tadbhava word, which is derived from Magadhi Prakrit "Tanka", which originally came from Sanskrit तन्कह् tankah. . In the region of Bengal, the term has always been used to refer to currency. In the 14th century, Ibn Battuta noticed that people in the Bengal Sultanate referred to gold and silver coins as taka instead of dinar.
The word taka in Bangla is also commonly used generically to mean any money, currency, or notes. Thus, colloquially, a person speaking in Bangla may use "taka" to refer to money regardless of what currency it is denominated in. This is also common in the Indian states of West Bengal and Tripura, where the official name of the Indian rupees is "taka" as well. In other eastern Indian languages with the influence of Prakrit. In Assam it is টকা tôka and it is ଟଂକା tôngka in Orissa.
After the Partition of Bengal in 1947, in East Bengal, which later became the eastern wing of Pakistan union and was renamed to East Pakistan in 1956, the Pakistani rupee also bore the word taka on official notes and coins. Bangla was one of the two national languages of the Pakistan union between 1956 and 1971 (the other being Urdu in West Pakistan). The Bangladeshi taka came into existence since 1972, a year after the independence of the eastern wing of the union, as the independent nation of Bangladesh.
Prior to the Liberation war in 1971, banknotes of the State Bank of Pakistan circulated throughout Bangladesh, and continued to be used in Bangladesh even after independence for only about three months until the official introduction of the taka on 4 March 1972. During the war, it was an unofficial practice of some Bengali nationalists to protest Pakistani rule by stamping banknotes with "বাংলা দেশ" and "BANGLA DESH" as two words in either Bangla or English. These locally produced stamps are known to exist in several varieties, as are forgeries. On 8 June 1971, the Pakistani government declared that all banknotes bearing such stamps ceased to be legal tender. Furthermore, to prevent looted high-denomination notes from disrupting the Pakistani economy, the government also withdrew the legal tender status of all 100- and 500-rupee notes.
Some foreign publications mention that there were rubber stamp "BANGLA DESH" overprints on different denominations of Pakistani bank notes during the a.m. period. It may be mentioned that Pakistani postage stamps were rubber-stamped and used all over Bangladesh until 30 March 1973, but Bangladesh Bank or the Ministry of Finance never issued an order to overprint or rubber-stamp Pakistani currency. It would be interesting to note here, that a counterfeiting gang is active, which uses a "washing system", whereby Tk100 notes are washed with a special kind of liquid, and the numbers are changed to give it the appearance of a Tk500 note.