noun, noun or participle which takes 'suru'
markup
Used in business and computing contexts: the amount added to a cost price to calculate a selling price, or the process of annotating a document with tags.
この商品のマークアップは20％です。
The markup on this product is 20%.
HTMLで文書をマークアップする。
Mark up a document with HTML.
値入 is a native Japanese term for markup, often used in retail, while マークアップ is a loanword common in business and IT.
Loanword from English 'markup'.