IRD NZ company tax calculator incorrect
Don't use the IRD tax calculator to estimate or calculate your company tax for 2008 – it's currently outright wrong. Despite asking you what tax year you want, and including the 2009 FY (April 2008 – March 2009) as an option, it does not have the correct data for that FY – it still calculates based on a company tax rate of 33% whereas it is now in fact 30%, as confirmed to me by the IRD: