Hong Kong lawmakers have backed the government’s proposed tax incentives for large innovative companies, but many said on Monday that the planned five-year concession period is too short to attract major firms to establish headquarters or expand operations in the city. Chief Executive John Lee Ka-chiu in his policy address last month said the government planned to submit a bill introducing preferential profits tax rates of either 5 per cent or 8.25 per cent, which was half of the city’s standard corporate tax rate of 16.5 per cent, for selected innovative enterprises for up to five years.