Japanese “service charge” button emoji meaning

The Japanese "service charge" button emoji shows the katakana character "sa" written as サ, placed inside a square shape. This character is commonly associated with the idea of a service charge or fee in Japan, such as an additional cost in restaurants or other service-based businesses. In online conversations, this emoji is often used to talk about fees, extra charges, or topics specifically related to Japan. While its use is most relevant in Japanese culture, it can also appear in discussions about services or payments in a general context.

The Japanese “service charge” button emoji was approved in Unicode 6.0 and added in Emoji 1.0, see related proposal L2/09026