Britain has raised £750m by selling half of its 30% stake in Royal Mail, it said today.
It added that it saw no reason to keep any holding in the postal service that was wholly state owned until 2013.
The sale of the first batch of shares in the 500-year-old postal operator two years ago attracted criticism from opposition politicians and trade unions who said the firm was sold off too cheaply after the shares jumped as much as 87%.
Having sold in 2013 at 330 pence in one of Britain's biggest privatisations for decades, the government offloaded its latest 15% stake last night at 500 pence.
Business Secretary Sajid Javid said the sale represented good value for taxpayers.
"Royal Mail has demonstrated that it can thrive in the private sector," he said.
"It now has the ability to access the funds it needs to ensure that it has a sustainable future and can adapt to the changes in the postal market. The Government sees no policy reason to keep its remainingstake in Royal Mail," the minister added.
In a speech last night, Finance Minister George Osborne said the government would also award up to 1% more of Royal Mail's shares to staff, after giving them 10% in 2013.