In 2010 Greenpeace took in $9.4 million donations, the most in at least a decade, after a higher-than-usual number of bequests at about 1 million.
Briggs-Hastie said under the current economic climate in New Zealand Greenpeace has struggled to increase its donor base.
"It has been a tough economic climate for us - it has been harder to sign up donors using traditional face-to-face methods," Briggs-Hastie said. "It's much harder to engage people and get their attention."
The related entity Greenpeace Educational Trust, which shares several trustees and a building, posted a loss of $83,514 in the 12 months ended December 31 from a profit of $2.5 million a year earlier.
"We were given a large donation to purchase the building that year," said Katja Carson, organisational director. "Since then the only income we receive is the revenue from the building we own."
The trust was set up to replace the Greenpeace Charitable Trust after that body lost a High Court appeal against the Charities Commission refusing to recognise it as a charity in 2010. It promotes conservation values, protects the natural environment and educates people.