“banknote / tag” in Japanese is 札, read satsu, fuda (さつ, ふだ). It is a Grade 4 Kyōiku kanji, taught in year 4 of Japanese elementary school, and appears in words such as 千円札 (1000-yen note).
What does 札 mean?
千円札をはらう。
Same sound, different character — the classic trap. Compare them side by side: