For Canadian-controlled private corporations (“CCPCs”) claiming the small business deduction, the net federal tax rate is being reduced from 10.5% to 10% and the net Ontario tax rate is being reduced from 4.5% to 3.5%.  As a result, the combined tax rate for CCPCs in Ontario on the first $500,000 of active business income is decreasing from 15% to 13.5%. These measures are meant to offset other changes such as increases to the investment tax rate and limitations being introduced on income sprinkling.