Portugal’s Finance Minister Vitor Gaspar has resigned, the president’s office has announced.
The minister has been praised by international creditors for keeping a tight rein on Portuguese finances following the country’s 2011 bailout.
However, the country is still in recession with high unemployment, and recent figures showed the budget deficit widening in the first quarter.
The president’s office said Maria Luis Albuquerque would replace Mr Gaspar.
In a resignation letter seen by the Reuters news agency, Mr Gaspar said the failure to hit public deficit and debt targets had undermined his credibility.