fiscal structure
Refers to the composition and framework of government finances, including revenue, expenditure, and debt.
Japan's fiscal structure is changing significantly due to the aging population.
The government is promoting reform of the fiscal structure.
財政 is a broader term for public finance or government finances, while 財政構造 specifically refers to the structural composition of those finances.
経済構造 refers to the overall economic structure, including private sector, whereas 財政構造 is limited to the fiscal or public finance aspect.
Compound of 財政 (fiscal, public finance) and 構造 (structure).