Note: The tax rate is calculated cumulatively on each level of income. 

For example, if your total income for 2006 was $75,000, your Ontario tax liability would be calculated as follows:

(6.05 % on $34,758 = $2102.85) + (9.15% on next $34,578 = $3180.35) + (11.16% on remaining $5482 = $611.79) for a total liability of $5894.99.