Restricted Stock Units are a common form of equity compensation in Canadian tech, and the tax treatment follows a two-event structure: the full fair market value at vesting goes on your T4 as employment income (taxed at your marginal rate), and your cost base resets to that vesting price so you’re only taxed once. The larger risk is often concentration rather than the tax: if your salary, bonus and RSUs all depend on one company, a stock drop hits your income, savings and net worth at the same time. RSUs are one of the equity-pay guides in this directory of taxable employment benefits.
Checking the withholding rate against your marginal tax rate shows whether a vest will leave a balance owing at tax time.
When You Sell the Shares
Your cost base for RSU shares is their fair market value at vesting, because you’ve already paid tax on that amount: 60 shares received at $50 have a cost base of $3,000, so selling them later for $4,200 is a $1,200 capital gain. Canada uses the average cost of identical shares, so shares from several grants are pooled; the adjusted cost base guide shows how to track it across vests and sales, and the capital gains inclusion rate page covers how much of the gain is taxed.
RSU vs Stock Options
Feature
RSU
Stock Options
What you get and what it costs
Shares at vesting, $0 cost
Right to buy shares at the exercise price
Tax
Full FMV at vesting is employment income; no 50% deduction
Reduces concentration and fixes the value; may miss later gains; trading restrictions may apply
Hold long-term
Keeps the upside and the company-specific risk
Partial sell
Balances both
The tax at vesting is the same whichever you choose: it is based on the vesting price, not on what you do with the shares. Selling at vesting and reinvesting through a TFSA or RRSP is one way people diversify.
A large vest can push income into the top tax brackets in one year. An RRSP contribution reduces taxable income and charitable donations earn a tax credit; if tax owing at filing gets large, CRA may require instalments.
Recording and Reporting
Your T4
What’s Included
Box 14
Includes RSU benefit
Box 38
Security options benefits
What to Track
Information
Why
Grant details
Vesting schedule
Vesting dates
Each vesting event
FMV at vesting
For cost base
Shares received
Actual net shares
Sales
For capital gains
Special Situations
Company Goes Public (IPO)
Before IPO
Private company RSUs
At IPO
May trigger vesting
Lock-up period
Can’t sell immediately
Tax due
Even if can’t sell
Leaving the Company
Scenario
Effect
Unvested RSUs
Usually forfeited
Vested RSUs
Yours to keep
Check agreement
For specifics
US-Based Employer
A Canadian resident is taxed in Canada on RSUs from a US employer; any US withholding may be claimed as a foreign tax credit, and the W-8BEN form is used for US tax purposes.
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