Malaysia 600 Ringgit Commemorative banknotes in conjunction with the 60th Anniversary of the Signing of the Federation of Malaya Independence Agreement issued on 14 December 2017 is the world largest legal tender banknote in Guinness World Records website.
According to the Guinness World Records:
The largest legal banknote measures 814 cm² (126.17 in²), achieved by Bank Negara Malaysia (Malaysia) on 29 December 2017.
The 22 cm X 37 cm (8.6 in X 14.5 in) banknote were creating in conjunction with the 60th Anniversary of the signing of the Federation of Malaya Independence Agreement. The banknote is worth 600 Malaysian ringgit (approximately £109.65; $147.34).
On 29 December 2017, BNM opened an online ordering facility for the sale of commemorative banknote. The result only come out on 25 January 2018 and the public can only get the banknote on 25 January 2018. The banknote was offered to collectors by Bank Negara Malaysia (BNM) for RM1,700 (approximately £308; US$434).
The official release date for the RM600 commemorative banknote is on 14 December 2017.
How big is the current world largest banknote? If you look at the measurement it is The 22 cm X 37 cm (8.6 in X 14.5 in) and if you compare it with a paper size, it is slightly bigger then a A4 paper size 21 x 29.7 cm (8.3 x 11.7 in).
The previous record holder is a 100,000 Philippine piso banknote issued on 22 May 1998 by the Central Bank of Manila. the banknote measuring 22 x 33 cm (8 ½ x 11 in) printed by Giesecke Devrient of Munich, Germany. Only 1,000 pieces were issued to commemorate The Centennial of Philippine Independence in 1998. The previous record holder is Giesecke Devrient, GMBH; place in Munich, Germany and the record were made on 22 May 1998. The banknote was offered to collectors by the Central Bank in 1998, who could purchase one of the limited-edition notes for 180,000 pesos, or about RM16,596 (US$3,700).