This handy calculator is maintained by Ernst & Young and allows you to calculate your marginal tax bracket, tax rate on capital gains, dividends and interest for any province or territory in Canada. Updated for the 2008 tax year.
Click here to use the 2008 Personal Tax Rate Calculator for Canadians
Taxtips.ca also has some really great calculators over at:
http://taxtips.ca/calculators.htm
@Traciatim – thanks for the link. I’m planning on building up the calculators and tools section and will certainly be adding taxtips and many others over time. If you ever come across any others that you think are useful, by all means let me know and I’ll throw up a link.