In spite of the troubled times in which he lived, Frederick was a successful ruler, and introduced a regular system of public finance into his lands.
Regulations were framed for the purpose of establishing adequate supervision over the revenue and expenditure for the abolition of irregular taxation and extortions, as well as the practice of farming out the collection of the revenue to individuals, and, generally, to adapt the whole collection and expenditure of the national revenue to modern ideas of public finance.
The expressions " science of finance " and " public finance " have been suggested as suitable to delimit the last mentioned application.
The theory of well-organized public finance is also discussed under Taxation and National Debt.
By means of his freedmen the emperor introduced the more rigorous economy of the Roman household into public finance.