Income tax Dates
FEB 7End-of-year income tax and Working for Families bills are due, unless you have an extension of time to file your income tax return.
FEB 28Provisional tax payments are due if you have a March balance date and use the ratio option.
MAR 31Income tax returns are due if you have an extension of time
Businesses get taxed on their income minus any business expenses and other deductions. If you're in business, including self employed or working as a contractor, you need to keep records of your expenses and income and understand what types of costs count as business expenses.
You can claim some expenses related to rental income and property. In some cases you can claim expenses related to research and development.
If you are not in business, there are some expenses you can claim against your income.