Income tax Dates
MAR 31Final date for ratio option provisional tax applications.
APR 7End-of-year income tax and Working for Families bills are due if you have an extension of time to file your income tax return.
MAY 7Provisional tax payments are due if you have a March balance date and use the standard, estimation or ratio options.
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.