The Act and United Future parties have settled their confidence and supply agreements with the National Party.
The National Party leader John Key is to sign the agreements this afternoon.
National won 60 seats in the Saturday 26 General Election, and requires at least one more seat to hold a majority, although the party may well lose one seat when special votes are finalised on Saturday.
The Maori Party said it will hold a series of at least 20 hui from today around the country to determine what sort of agreement to enter into with the National Party. It is expected a decision will be made by the end of the week.
Mr Key told Newstalk ZB details on the arrangements will be revealed this afternoon, including any ministerial positions for the minor parties.