Opinion | How Hong Kong can dig itself out of recurring deficits
As the city borrows money to fund development, it risks depleting its savings unless policymakers act decisively to find new sources of revenue

Part of the reason is a presentational issue. The operating account is reported on a cash basis, literally cash in and cash out. This includes what is happening on a fiscal basis but also brings in all sorts of extraneous items that can obscure the underlying situation. Let me explain.
The fiscal balance is the difference between government revenue and government expenditure. If the balance is positive, we call the result a surplus. If it is negative, we call it a deficit. Hong Kong once ran record fiscal surpluses. We amassed so much reserves that there were complaints the government was being too tight-fisted.
Those halcyon days are well in the past and, for some years now, we have been incurring fiscal deficits and have thus gradually whittled away the accumulated surpluses.