Being self-employed or running your own business means you're responsible for paying your own tax.
You'll also need to file an Individual income tax return (IR3) at the end of each tax year.
Depending on your income, you may still be able to claim a tax credit (formerly rebate).
If you're self-employed you need to pay tax at set times through the year and you may need to register for goods and services tax (GST).
Check out Real lives to see Matt's story - he has just left school and works full-time, but is thinking of working for himself.