In economically developed areas, civil servants have assessment bonuses and allowances, but that is what every civil servant in every bureau of the government at the same level has. The amount of money in each department is uniform, and there is nothing special about financial institutions.
According to the statistics shared by netizens (as of 20 18), the average salary of the Finance Bureau is 4,272 yuan/month, of which 37% of the salary income is below 3,000 yuan/month, and 25% of the salary income is between 3,000 yuan and 4,000 yuan/month.