New Zealand sold state phone company Telecom for NZ$4.25bn in 1990

New Zealand's telephones were run by the Post Office, a government department. After the 1984 election triggered a fiscal and currency crisis, the Labour government launched radical economic reform: in 1987 the Post Office's telecom arm became Telecom Corporation, a state-owned enterprise required to run commercially, and in 1989 the market was fully deregulated with no industry-specific regulator.

On 14 June 1990 the government signed an agreement to sell Telecom to a consortium of Bell Atlantic and Ameritech with local partners Fay Richwhite and Freightways for NZ$4.25 billion — the largest business transaction in New Zealand's history and the sixth-largest in the world that year. A 'Kiwi Share' clause guaranteed free local residential calls and capped line-rental rises.

In 1991 the buyers took up a 98 percent holding and promptly listed Telecom on the New Zealand, Australian and New York exchanges, offering 724.5 million shares at NZ$2 each. The light-handed, no-regulator model later drew criticism — competitors fought Telecom over interconnection for years — but the sale itself became the flagship of New Zealand's privatisation programme.

NZ$4.25bn sale proceeds — New Zealand's biggest business deal and the world's sixth-largest that year — plus a modernized, listed carrier within a year.

The 1984 crisis left the government desperate for cash and foreign exchange, making asset sales politically possible.

Corporatization in 1987 turned a bureaucracy into a company with commercial accounts that investors could price.

Selling before imposing heavy regulation maximized the price — finance houses argued the buyers had overpaid precisely because no interconnection regime existed.

The Kiwi Share clause bought public acceptance by protecting free local calling.

Corporatize first, deregulate, then sell: turning a government department into a company with clean accounts made it a sellable asset, and competition policy did the rest.

Telecom (later Spark) became New Zealand's dominant listed carrier. Bell Atlantic and Ameritech exited at a profit in the late 1990s. The absence of a telecom regulator became the lasting controversy: interconnection disputes with rival Clear ran for years, and New Zealand eventually tightened the regime — including the 2006 unbundling and 2011 structural split of Telecom into Chorus and Spark.