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 …

Nov 1, 2017 – The small business deduction is a reduction in corporate taxes for Canadian controlled private corporations, or CCPCs. The reduced rate of tax is available on active business income up to the corporation's business limit for the year. The federal business limit is $500,000 for 2009 and later years.