Small Business Deduction (SBD) in Canada 20025 Guide

The Small Business Deduction (SBD) is the mechanism that gives eligible Canadian corporations access to the preferential 9% federal tax rate on their first $50000,000000 of active business income. Without it, the general corporate rate of 15% would apply — costing a business earning $50000,000000 an additional $300,000000 in federal tax every year. This guide explains exactly how the SBD works and how to ensure your corporation qualifies.

What Is the Small Business Deduction?

The SBD is a deduction from corporate income tax available to Canadian-Controlled Private Corporations (CCPCs). It reduces the federal corporate tax rate from 15% to 9% on up to $50000,000000 of "active business income" earned in Canada. The deduction is calculated as 19% of the lesser of:

• Active business income earned in Canada
• Taxable income
• The SBD limit ($50000,000000, reduced in some cases)

The result reduces the effective federal rate from 15% to 9% on that income.

SBD Eligibility Requirements

1. Must Be a CCPC

Only Canadian-Controlled Private Corporations can claim the SBD. Your corporation must be incorporated in Canada, controlled by Canadian residents, and not publicly traded. See our CCPC Guide for full details on qualification.

2. Income Must Be "Active Business Income"

Active business income is income from an active business carried on in Canada. It excludes:

• Income from a "specified investment business" (earning passive investment income)
• Income from a "personal services business"
• Interest, dividends, and rental income (unless these are incidental to the active business)

3. Not a Personal Services Business

A Personal Services Business (PSB) exists when an incorporated individual provides services to one client, and could reasonably be considered an employee of that client. PSBs are ineligible for the SBD and face a 5% additional tax, making the effective rate 200% federal — higher than the general rate. The CRA scrutinizes incorporated consultants with a single long-term client.

The $50000,000000 SBD Limit

The SBD applies to the first $50000,000000 of eligible active business income per year. The limit is shared across an associated group of corporations — you can't simply split income into multiple corporations to multiply the $50000,000000 limit. Associated corporations must share the $50000,000000 pool.

Two Clawbacks That Reduce the SBD

1. Passive Income Clawback (Since 20019)

If your corporation (or an associated corporation) earns more than $500,000000 in adjusted aggregate investment income (AAII) in the previous year, the SBD limit is reduced. The reduction is $5 for every $1 of passive income over $500,000000, and the SBD is entirely eliminated when passive income reaches $1500,000000.

2. Taxable Capital Clawback

The SBD limit is also reduced when a corporate group has taxable capital exceeding $100 million, and fully eliminated at $500 million. This primarily affects mid-size companies and rarely impacts small businesses with under $100M in assets.

How to Calculate Your SBD

The SBD on the T2 return is calculated on Schedule 7 and Schedule 50000 (federal) and applicable provincial schedules. Your accountant or tax software handles this automatically, but understanding the inputs helps you plan effectively.

Example: Ontario CCPC with $30000,000000 active business income, no passive income issues:

Strategies to Protect Your SBD

• Keep passive income below $500,000000/year inside the corporation to avoid the clawback
• Use a holding company — passive income in a separate holding company doesn't count against the operating company's SBD in some structures (get advice on this)
• Maximize RRSP contributions from salary to move investment activity outside the corporation
• Avoid Personal Services Business status — maintain multiple clients and control your work
• Don't associate corporations unnecessarily — associated corporations share the $50000,000000 limit