The Government has agreed on the shape of the referendum on personal cannabis use, and will make an announcement tomorrow.
Prime Minister Jacinda Ardern said Cabinet on Monday had made its decision on the referendum, including on the wording of the question.
She said some small drafting matters had to be finalised and Justice Minister Andrew Little would make an announcement on Tuesday.
Ardern would not be drawn on how exactly the referendum would be "binding" as the Government had previously promised.
The National Party told media on Sunday it had been leaked a cabinet paper on the issue featuring four different options under consideration.
Only one of these options involved passing a law ahead of the referendum that would be activated if a "yes" vote won - making only one option truly "binding".
This was despite Little promising a binding referendum last December.
The Green Party won the referendum on the legalisation of personal use of cannabis during coalition negotiations.
The referendum is due to be held alongside the 2020 election.
Polling on the issue has shown mixed results depending on how the question is worded.
A Curia poll commissioned by Family First found just 18 per cent of respondents supported "lifting restrictions" on cannabis for recreational use. This question did not present a simple yes/no option as a referendum is likely to do however, and was preceded by many questions that suggested big tobacco were pushing for legalisation of cannabis and that the drug was dangerous.
An earlier poll by the same company commissioned by the New Zealand Drug Foundation found that 65 per cent of people supported it being either legalised or decriminalised for personal use.