Ernst & Young site includes interactive calculators for estimating national and provincial taxes. Go to "tax tools" on the home page.
This page contains information about this year's budget, tax changes, Canadian tax facts and figures.
This website has some good information about things such as tax breaks at home and cross-border. Search "tax" on the home page.
CoolTax
A very good tax return program. And it's FREE. Thanks for the tip, Tom
and we'll share it with our fellow retired teachers.