The exact salary Watson received for every individual Harry Potter movie has never been fully disclosed through a comprehensive official financial statement.
Early in the franchise, Watson was a child actor whose compensation was naturally far lower than the enormous figures associated with the later films. As the movies became more successful and the actors became indispensable to the franchise, their bargaining power increased.
By the later installments, Watson was earning millions of dollars per film.
Reports suggest that she received around $4 million for Order of the Phoenix and approximately $30 million for the final two Deathly Hallows films combined. CCelebrity Net Worth+1
There were also reportedly bonus and performance-related elements to some of the contracts.
This is important because blockbuster actors can earn money through several mechanisms:

