Individual tax rates are marginal and they increase dependant on the level of income you receive as a wage. The individual tax rates can be found on the ATO website.
Company tax rates have just been revised by the federal government in the 2017/2018 budget. Companies with less than $10 million in turnover will be considered a small business entity and will be eligible for a 28.5 per cent tax rate in the 2017 income tax year, and a reduced rate of 27.5 per cent in the 2018 income tax year and beyond. These rates go into more detail at the ATO website.