Equity Compensation 101: Planning for RSUs and ESPPs in Canada

Equity comp is great. The tax treatment is not intuitive.

If you work for a U.S. or Canadian public company, you've probably seen some combination of restricted stock units (RSUs), an employee stock purchase plan (ESPP), and possibly stock options or performance shares. They're a meaningful part of your compensation. They're also where we see the most expensive mistakes — usually because the tax treatment doesn't match the intuition that "I haven't sold anything yet, so I don't owe anything yet."

Here's how each instrument actually works, and where people get hurt.

RSUs: taxed when they vest, not when you sell

When an RSU vests, the full market value of the shares on the vest date is added to your T4 as employment income. Your employer typically sells a portion of the shares to cover withholding (often called a "sell-to-cover"), but Canadian employers usually withhold at a flat statutory rate that assumes you're in roughly the second federal bracket. If your true marginal rate is 43% or 50% — which it often is once RSUs and salary are combined — you can be materially under-withheld and owe a meaningful balance in April.

A second trap: the cost basis of the shares you keep is the vest-date market value. If the stock then drops 20% before you sell, you can have a capital loss on the sale even though you also owe income tax on the original vest. The tax bill on the vest doesn't go away. We see clients every year who held the shares through a downturn and ended up paying tax on income they no longer have.

What we usually recommend: sell the vested shares on or near the vest date and redeploy the proceeds into a diversified portfolio. The tax outcome is identical to "vest and immediately sell," and it eliminates the risk of holding a concentrated position in your employer.

ESPPs: the discount is taxable, not capital

A typical ESPP lets you buy company stock at a 10–15% discount, sometimes calculated against the lower of the price at the start and end of the offering period. That discount is real money — but it's taxed as employment income in the year of purchase, not as a capital gain when you eventually sell.

The cost base of the ESPP shares is therefore the fair market value on the purchase date, not what you actually paid. The 15% discount has already been added to your T4. If you later sell at the same price, you have neither a gain nor a loss for tax purposes (you've already paid tax on the discount). If you sell higher, the additional appreciation is a capital gain. If you sell lower, you have a capital loss — but the income inclusion stays on your T4.

What we usually recommend: participate in the ESPP if cash flow allows (the discount is essentially free return on a short hold), and sell on the purchase date unless you have an explicit reason to hold. The discount is captured either way; the only thing changing is your concentration risk.

Stock options: the bracket question matters more than the timing question

Canadian-controlled private corporation (CCPC) options and public-company options are taxed differently, and recent changes to the stock option deduction have narrowed the favourable treatment for high earners. The general shape: when you exercise, the spread between the exercise price and the market price is employment income. If the option qualifies for the 50% stock option deduction, only half of the spread is included on your T4 — but for public-company options granted after July 2021, that deduction is limited to the first $200,000 of vesting in any year.

The decision of when to exercise is mostly a tax-bracket question (and a risk question, because you're concentrating into employer stock). The instinct to "let it ride" because the company has been doing well is the same instinct that makes RSU holders end up over-concentrated. Treat options as one input into a broader plan, not a special class of asset that's exempt from diversification.

The concentration problem

The biggest risk most equity-compensated households carry isn't tax — it's that 30–60% of their net worth is sitting in a single stock that also happens to be the source of their salary. If that company has a bad year, your portfolio and your job are correlated, and that's the worst possible time to have to liquidate at depressed prices.

A reasonable rule of thumb: no more than 10–15% of investable assets in any single company, including your employer. If you're materially over that, the question is how to bring it back into line tax-efficiently — usually some combination of selling vested RSUs as they hit, donating appreciated shares to charity, and harvesting losses elsewhere in the portfolio to offset realized gains.

Quarterly tax instalments often catch people off guard

If your withholding falls more than ~$3,000 short of your tax owing two years in a row, the CRA will send you instalment reminders for the following year. RSU under-withholding is one of the most common ways to land on the instalment treadmill. It's not the end of the world, but it is something to anticipate so April isn't a surprise.

This is exactly the kind of work we do

Equity compensation is one of the highest-leverage planning areas — small changes to when shares are sold, how proceeds are redeployed, and how concentration is managed often translate into hundreds of thousands of dollars over a career. We work with senior employees of public and pre-IPO companies on the full picture: tax modelling, diversification, cash-flow planning, and coordinating with cross-border accountants when shares were granted while you were a U.S. resident. Book a complimentary consultation if you'd like to talk through your equity comp situation.