An announcement on the visit by former US President Barack Obama is expected soon.
It is understood the final details have been agreed and the contracts could be signed and the visit announced soon, possibly by the end of the week.
Air New Zealand, which is involved in bringing the former President to New Zealand, is believed to be one of three companies that would underwrite the cost of Obama's fees.
The fees would be partly recouped by ticket sales to speaking events.
When the Herald revealed news of Obama's visit early this month, Deputy Prime Minister Winston Peters questioned whether Air NZ could afford Obama's full fee on its own.
Peters is a shareholding minister of Air NZ. The inclusion of other companies in underwriting the visit could be a response to that concern. It is understood one of the other companies could announce the visit, rather than Air NZ.
