中等ECON-FISC-003
Which item is an automatic stabiliser?
A. A one-off cash handout voted in this year's budget
B. Salaries tax revenue falling in a slump under the existing progressive schedule, with no new law✓ 答案
C. An independent cut in the HKMA Base Rate
D. A new tariff on bottled juice
解說
Automatic stabilisers change under rules already in place. Progressive tax revenue falls when incomes fall, so disposable income is cushioned. A handout and a tariff are discretionary decisions. The HKMA cannot cut the Base Rate independently of US rates under the currency board.