надбавка înseamnă în Engleză

bonus [bonuses]▼(extra amount of money given as a premium)
noun
[UK: ˈbəʊ.nəs] [US: ˈboʊ.nəs]

markup [markups]▼(percentage or amount added to buy-in price)
noun
[UK: ˈmɑːkʌp] [US: ˈmɑːrˌkəp]

premium [premiums]▼(a bonus paid in addition to normal payments)
noun
[UK: ˈpriː.mɪəm] [US: ˈpriː.miəm]