“It is likely that next year there will also be another indirect tax,” said Costa in an interview with daily newspaper Público published on Monday, when asked about indirect taxes.

"There may be another indirect tax. The country has to make choices,” he told the newspaper, adding “there are other special consumer taxes that depend on individual choices: luxury products, tobacco, alcohol…”

In the interview, the second half of which is due to be published in Tuesday’s edition, Costa noted that civil service salaries would be reinstated this month but that only in 2018 would “updates” occur. He added that it was also not time to tax shares and investments.