The Small Business Deduction is a federal tax reduction that lowers the corporate tax rate on active business income for Canadian-Controlled Private Corporations, from the general rate to a 9 percent federal rate on the first $500,000 of active income.

The combined federal and provincial small business rate varies by province but is typically 10 to 12 percent, compared to a general corporate rate of 25 to 27 percent on the same income. On $500,000 of active business income, the difference is roughly $75,000 to $85,000 in annual tax, a material benefit worth actively protecting.

Three factors erode or eliminate it: passive income above $50,000 annually inside the corporation, associated corporation structures where the deduction must be shared across related entities, and loss of CCPC status. Each is manageable with planning. Each goes unmanaged when the business owner assumes the SBD is a standing entitlement rather than a benefit to be monitored.

The Small Business Deduction is worth protecting, and the conditions that erode it arrive quietly. See how Wefinx approaches tax planning.

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