The land tax rates are (I think):
0 - 400,000 x 0.4%
400,000 - 500,000 x 0.6%
500,000+ x 1.4%
Keep in mind that it the cumulative value of a properties land component. If you have several trusts with less than $400,000 of land value each, you'll never have to pay more than 0.4% land tax...