RSUs and Employee Stock Options: Canadian Tax, Withholding, and Concentration
This article is the Canadian tax shape of employer equity, and the concentration problem that comes with it. It is not a brokerage recommendation, and it does not link to a trading platform. Where a diversified portfolio sits once you have sold is ETF asset location and tax-efficient investing. Room for a cash contribution after a vest is the TFSA contribution guide and the RRSP playbook. How to count unvested equity in a job offer is raise and promotion math.
A restricted share unit, a performance share unit, a stock option, a purchase plan, and actual restricted shares are not the same contract. Your grant agreement decides which one you hold. Public-company RSUs are often full employment income at vest. Employee stock options can qualify for a one-half deduction, or for a deferral if the company is a Canadian-controlled private corporation, and an annual cap on that deduction can apply to some grants. Confirm the grant. Do not apply the option deduction to an RSU because both words appeared in the offer letter.
When the income happens
| Instrument | Typical Canadian tax moment | What people assume instead |
|---|---|---|
| RSU or PSU that settles in shares or cash | Employment income when the units vest and the shares or cash are delivered, generally at fair market value. Your cost of the shares is the amount included in income. Later movement is a capital gain or loss. | That nothing is taxed until you sell. The sale is the second event. The vest was the first. |
| Employee stock option | A taxable employment benefit, generally when you exercise, equal to the value of the shares minus the price you pay. A one-half deduction may exist if the grant meets the conditions. A CCPC grant can defer the inclusion until you dispose of the shares. Confirm both. | That every option is "capital gains." The benefit is employment income. Capital gains treatment, if any, is a deduction from that income, and it is conditional. |
| Employee purchase plan | A discount the employer gives you is often an employment benefit at purchase. The shares then have a cost base. A later sale is capital. | That a payroll deduction into shares is just savings, with no income until sale. |
If the company is foreign, the Canadian inclusion is still generally employment income for a resident. A foreign withholding tax may also come off. A foreign tax credit can be available and is easy to miss or to double-count. Currency moves between vest and sale are their own gain or loss. Confirm the slips. Do not net a US withholding line against a Canadian marginal rate in your head and call it done.
Withholding is not the tax
Employers must withhold, and they often withhold as if the benefit were a bonus: a flat method, sometimes without the stock-option deduction, sometimes on a share-settled award by selling shares to cover. That amount can be higher or lower than the tax you actually owe once the income sits on top of salary, in your real bracket, in your province, with the deduction you actually qualify for.
- A large balance owing is how people discover that the sell-to-cover used a rate below their marginal rate. The cash to pay CRA in April was never set aside, because the shares felt like the savings.
- A large refund is the other miss: too much withheld, or a deduction the payroll system did not apply and the return does. It is not a bonus. It is your money coming back late.
- Next year's instalments can start because this year's balance owing crossed the threshold. The rules are quarterly tax instalments. A vest is a good year to warn your accountant before December, not in April.
- Alternative minimum tax can apply when preferential treatment — including a large option deduction — is a big share of your income. The exemption and the rate change. Confirm on the return. Do not assume the deduction is free.
The full value is still employment income. The shares that were sold withheld a tax estimate. You may also have a small capital gain or loss on those shares if the sale price differed from the value included in income. The shares you kept are still a concentrated position with a cost base equal to that included value. Keep the confirmations. The bookkeeping is tax record keeping.
Your job and your shares are one bet
Salary, bonus, and the unvested grant all depend on the same employer. A hold-everything policy adds a third copy of that bet in a taxable account. Diversifying is allowed to feel like disloyalty. It is the point. Sell down to a share of your net worth you could watch drop hard without changing your rent. There is no CRA percentage. There is a household one, and you should write it down before vest day, when the price is a mood.
Contributing the shares in kind to a TFSA or an RRSP is a disposition at fair market value. If you contribute immediately after vest, the capital gain may be small because your cost is the amount just included in income. A loss on a transfer into a registered account is a different and usually ugly rule. You use contribution room equal to the value. The shares inside the account are still one company, and inside an RRSP they are locked in until a withdrawal. The usual cleaner sequence is: set aside the tax, sell toward the concentration limit you wrote down, contribute cash to the TFSA or RRSP if the room and the priority say so. The priority is RRSP versus TFSA versus FHSA. A TFSA is also the wrong place for a private control block. Advantage and prohibited-investment rules exist. Confirm before you contribute employer shares of a company you influence.
Units vest and the shares are worth $40,000 that day. That $40,000 is included in employment income. The employer sells enough shares to remit $12,000 of withholding. You keep shares worth $28,000, with a cost base of $40,000 spread across all the shares, including the ones sold. Suppose your actual tax on the $40,000, at a combined marginal rate you have confirmed, is $17,000. You still owe about $5,000 next April. The $12,000 was not the bill. If the kept shares later fall to $22,000 and you sell, you have a capital loss against the cost base, which does not refund the employment income you already reported. Employment income and the later capital loss are different buckets. Confirm the slips before you file either one.
Key takeaways
- Read the grant. RSUs are usually income at vest. Options might get a deduction or a deferral. The letter decides.
- Withholding is an estimate. Compare it to your marginal rate and set cash aside. A big vest can create instalments.
- Your cost base is the amount included in income. The sale after that is capital. A loss does not undo the employment inclusion.
- Cap the position. The company already pays your salary. Write the limit before vest day.
- Contribute cash after you diversify. An in-kind TFSA or RRSP transfer is a disposition, and it can warehouse a single stock.
Related reading
- Raise and promotion math — how to price unvested equity you would forfeit.
- Tax-efficient investing — what to hold once the employer shares are sold.
- ETF asset location — TFSA, RRSP, and non-registered placement.
- Quarterly instalments — the year after a vest leaves a balance owing.
- Contribution limits — room you would use if you contribute the cash.
The vest is employment income. The return is where it gets priced.
Brackets, the option deduction, and instalments are tax. The 2026 tax guide is the filing half of a grant.
Get the 2026 Tax Guide — $49 CAD
