paymaster
noun [ C ]
FINANCE uk/ˈpeɪˌmɑːstər/ us/ˈpeɪˌmæstər/a person or an organization that pays for something, and has or expects to have some control over it:
Germany is the chief paymaster of the EU's 100 billion budget.
a person or an organization that is in charge of paying people the money they have earned:
All UN agencies are required to pay their local staff through a government paymaster.