The OECD held its forecast growth at 0.8% percent for 2011, but scaled back next year's growth to 4.1%.
It repeated that New Zealand could expect a contraction in the first quarter before enjoying the benefits of the Rugby World Cup and the rebuilding of Christchurch.
It says record-high commodity prices will also provide support, and households and businesses could be expected to spend and invest more, although they could also be expected to keep reducing their debt.
Meanwhile, the OECD says the global economic recovery still faces many risks, which could lead to stagflation.
World growth is forecast to be 4.2% this year, and 4.6% next year, the BBC reports.
However the OECD warns rising prices of oil and other commodities, damage from Japan's earthquake, and a sharp slowdown in China could derail things.
