Is Australia's carbon tax price too high?

Australia has now the world's highest carbon price -- some say too high. Rena Sarumpaet looks at how Australia compares with other countries.

Almost 300 businesses have signed a joint statement backing a price on carbon.

Australia now has the world's highest carbon price -- some say too high.

But it could drop significantly, once Australia joins the global emissions trading scheme, and that could expose the Federal budget to a $3.5 billion black hole.

SBS' Rena Sarumpaet explains and looks at how Australia compares with other countries.