RSU Taxes in Canada: What You Owe at Vesting, at Sale, and Why Paycheques Shrink

By Jordan Ellis · Published August 21, 2026 · Reviewed September 14, 2026

Quick Answer

Restricted Stock Units in Canada are taxed twice at two different moments: at vesting, the full market value of the shares counts as employment income — taxed at your marginal rate like a cash bonus, with tax usually collected by selling some of the shares (sell-to-cover); and at sale, any price change since vesting is a capital gain or loss, only 50% of which is taxable. The common traps: employer withholding below your true marginal rate creating an April tax bill, and US-listed RSUs where the IRS cost basis reported differs from your Canadian adjusted cost base, leading to double taxation if you don't convert and track properly.

RSUs feel like free money until three separate tax events prove otherwise. If you’re at a tech company vesting US-listed shares, this is the map — and run your vest through the income tax calculator to see the real keep.

Event 1: Vesting (income tax, full rate)

100 units vest at $80 US. That $8,000 US — converted to CAD at the vest-date rate, say $10,900 — is employment income on your T4, taxed at your marginal rate. At a 43% marginal rate: ~$4,700 owed.

Employers usually collect this via sell-to-cover: ~43 shares sold automatically, 57 delivered. Your “100 units vested” becomes 57 in the account. Not a scam — the withholding.

Event 2: Selling (capital gains on the change only)

Your adjusted cost base is the vest value ($10,900 CAD for the lot) — you already paid income tax on it. Sell those 57 shares later at $95 US:

Proceeds above the CAD-adjusted vest value = capital gain, 50% taxable
Below = capital loss, usable against gains

The trap: US brokerage slips show basis in USD (or zero) on forms CRA doesn’t read. If you report proceeds without your own CAD cost-base tracking, you can get taxed on the full sale price — double-taxed on income you already reported at vest. Keep a spreadsheet: vest date, FMV in USD, FX rate, CAD basis. Every vest, every year.

Event 3: The April surprise

Employer withholding on equity comp frequently runs below your true marginal rate, for example when a vest is withheld at a fixed or estimated rate rather than your actual top rate (see how bonus withholding is supposed to work). Earn $200,000+ and vests withheld at ~40% against a 48–53% marginal rate mean a five-figure balance owing each spring. Fix: set aside the gap per vest, or ask payroll to bump withholding.

The decisions that actually matter

Sell at vest. You owe the income tax either way; holding is choosing to concentrate your net worth in the same company as your salary. Sell, diversify into your TFSA/RRSP per the beginner’s order of operations.
Model the withholding gap now, not in April — income tax calculator, salary vs salary + annual vests.
USD dividends on held RSU shares are foreign income — taxed fully in Canada, with US withholding recoverable via the foreign tax credit.
Job change mid-vest: unvested RSUs almost always evaporate; only vested, delivered shares are yours. Price that into any offer comparison — a salary-to-take-home comparison that ignores unvested equity is fiction.

RSUs are excellent compensation — they’re just taxed like what they are: salary wearing a stock costume, plus an investment decision you didn’t know you were making.

Official sources

Rules and dollar limits change. Confirm current amounts with the official pages below before you act · Last reviewed September 14, 2026.

Capital gains (Guide T4037) (Canada Revenue Agency)
Line 24900: Security options deductions (Canada Revenue Agency)
Bonuses, retroactive pay increases or irregular amounts (Canada Revenue Agency)

Frequently Asked Questions

How are RSUs taxed when they vest in Canada?

The full fair market value of the shares on the vesting date is employment income, added to your T4 and taxed at your marginal rate — no 50% break, no deferral. If 100 units vest at $80, that is $8,000 of taxable income. Most employers withhold tax by selling a portion of the vesting shares (sell-to-cover), so you receive fewer shares than vested.

Why do I still owe tax in April if my RSUs were already withheld?

Employer withholding on stock compensation often uses rates that undershoot your real marginal rate — especially for incomes over $150,000, where the true marginal rate hits 43-53% but withholding may run lower. The shortfall is simply deferred to your return. Set aside the difference at each vest, or increase payroll withholding to match.

What happens tax-wise when I sell my RSU shares?

Any change in value since the vesting date is a capital gain or loss — 50% of a gain is taxable at your marginal rate. Your adjusted cost base is the value at vesting (which you already paid income tax on), not zero. Sell at $95 after vesting at $80 and only the $15 gain is a capital gain.

How do US-listed RSUs get taxed in Canada?

As a Canadian resident you owe Canada on the full vesting value converted to CAD at the vest-date exchange rate — that CAD figure is your adjusted cost base. US brokers often report proceeds with a zero or USD basis on forms the CRA does not recognize; if you report blindly from those slips you can pay tax twice on the same income. Track every vest's CAD value yourself.

Should I sell my RSUs right when they vest?

There is a strong default case for selling immediately: you have already paid full income tax on the value, so holding is equivalent to taking that amount of cash and buying your employer's stock today — a concentrated bet on the company that also signs your paycheque. Diversifying at vest costs you nothing in extra tax and removes a correlation most financial planners consider one of the riskiest positions a household can hold.