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Former NSW premier Dominic Perrottet has announced his resignation from parliament almost 18 months after last year's election defeat.
The Liberal MP for Epping, who also served as the state's treasurer, said his political career had been "an honour and a privilege".
"It has been the greatest privilege of my life to serve as premier, treasurer, minister for industrial relations and minister for finance, services and property," he said in a statement.
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"I love NSW. It has been an absolute honour to represent the 8 million people who call this great state home, especially as their 46th premier.
"I got into politics to promote ideas and new ways of thinking and I am proud to have been part of a government that left NSW a much better place than we found it."
Perrottet was first elected to parliament in the seat of Castle Hill, when he collected more than 80 per cent of the two-party vote in the 2011 election.
He later moved to the electorate of Hawkesbury before finishing his career in Epping.
He served as treasurer under Gladys Berejiklian from 2017 before replacing her as premier following her resignation in 2021.
In both roles he played a crucial role in New South Wales' response to COVID-19, generally advocating for less stringent restrictions and accelerating the state's path out of pandemic controls after becoming premier.
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"He helped guide us through the pandemic, championed reopening NSW, created financial support packages for families and small businesses, and swiftly opened international borders with the rest of Australia following, demonstrating his decisive leadership," Opposition Leader Mark Speakman said.
"His retirement marks the end of a career defined by visionary leadership and unwavering dedication to the people of NSW.
"His contributions to financial management, infrastructure, and family support have set a high standard for future leaders."
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Since the Coalition's loss in the state election last year, Perrottet has served as a backbencher, but played a crucial role in defusing a spat between the Liberals and Nationals earlier this month.
Perrottet said he will officially quit parliament next month.
"I would like to thank the communities of Castle Hill, Hawkesbury and Epping who I have had the good fortune of representing during my time in office," he said.
"I will request the Government afford me the opportunity to deliver a valedictory speech when Parliament returns in August and I intend to formally resign to the Speaker of the Legislative Assembly on 11 August 2024."
