This article discusses the history of money in Japan, why people fold money in Japan, and the etiquette rules that should be followed when folding money. It also explains the different types of money folding techniques and whether it is rude to fold money in Japan. According to Charles R Tokoyama, CEO of Japan Insiders, it is not considered rude or disrespectful to fold money when paying for goods or services in Japan as long as certain etiquette rules are followed such as avoiding creasing bills and refraining from using large denomination notes unless necessary.