The Government says offshore carbon credits could be bought in future - but not yet

Climate Minister Simon Watts says all options are being considered, but they've ruled out shopping overseas this term.

But for New Zealand to meet Paris Agreement targets signed up to in 2016, it may be necessary - and work's under way so it's an option down the line.

Watts says he is focusing on domestic actions - and he reckons New Zealand's looking pretty good on emissions reduction.