Feb 7, 2017 – The basic rate of Part I tax is 38% of your taxable income, 28% after federal tax abatement. After the general tax reduction, the net tax rate is 15%. For Canadian-controlled private corporations claiming the small business deduction, the net tax rate is 10.5%.

Small Business Income Thresholds for CCPCs. 2018 and beyond, Current as of December 31, 2017 [PDF 96 KB]; 2017 and beyond, Current as of December 31, 2017 [PDF 79 KB]. Other. Non-Resident Withholding Tax Rates for Treaty Countries [PDF 147 KB], Current as of December 31, 2017; Federal and Provincial …

Nov 14, 2017 – Corporate tax changes. 1BSmall business tax rate. The update reduces Ontario's small business corporate income tax rate that applies to the first $500,000 of qualifying active business income of a Canadian-controlled private corporation to 3.5% (from 4.5%) effective January 1, 2018. The tax rate reduction …