Stock Option Basics
How Stock Options Work
| Term | Meaning |
|---|---|
| Grant date | When company gives options |
| Vesting | When you can exercise |
| Exercise price | Price you pay for shares |
| Fair market value (FMV) | Current share price |
| Exercise | Buying shares at exercise price |
The Benefit
| Calculation | |
|---|---|
| FMV at exercise | $50 |
| Exercise price | $20 |
| Stock option benefit | $30 per share |
This $30 is taxable.
Types of Stock Options
By Company Type
| Type | Tax Treatment |
|---|---|
| Public company | Tax at exercise |
| CCPC (private) | May defer until sale |
CCPC vs Non-CCPC
| Feature | CCPC | Public/Non-CCPC |
|---|---|---|
| Tax timing | At sale | At exercise |
| Deduction eligibility | Often yes | Conditions apply |
| Complexity | Lower | Higher |
Tax Calculation
Basic Formula
| Step | Calculation |
|---|---|
| Stock option benefit | FMV - Exercise price |
| × Number of shares | = Total benefit |
| Reported as | Employment income (T4) |
Example
| Details | |
|---|---|
| Shares | 1,000 |
| Exercise price | $10 |
| FMV at exercise | $40 |
| Benefit | $30,000 |
This $30,000 is added to your employment income.
The 50% Deduction
How It Works
| If Eligible | |
|---|---|
| Taxable | Only 50% of benefit |
| Effective rate | Same as capital gains |
Eligibility Conditions
| Requirement | Details |
|---|---|
| Exercise price ≥ FMV | At grant date |
| Arm’s length | Not related to employer |
| Common shares | Prescribed conditions |
| Option agreement | Clear terms |
Deduction Caps (2024 Rules)
| Rules | |
|---|---|
| For amounts over $200K | Deduction may be limited |
| Large grants | May not get full deduction |
| CCPCs | Often exempt from cap |
Tax Timeline
Public Company Options
| When | What Happens |
|---|---|
| Grant | No tax |
| Vesting | No tax |
| Exercise | Tax on benefit |
| Sale | Capital gain/loss from exercise price |
CCPC Options
| When | What Happens |
|---|---|
| Grant | No tax |
| Vesting | No tax |
| Exercise | Tax may be deferred |
| Sale | Tax on deferred benefit + capital gain |
Exercise Strategies
Exercise and Hold
| Action | Consequence |
|---|---|
| Exercise | Pay exercise price |
| Keep shares | Hope value increases |
| Tax due | At exercise (public) or sale (CCPC) |
| Risk | Share price could fall |
Exercise and Sell (“Cashless”)
| Action | Consequence |
|---|---|
| Exercise | Pay exercise price |
| Sell immediately | Receive cash |
| Tax due | On stock option benefit |
| No ongoing risk | Cash in hand |
Partial Exercise
| Action | Consequence |
|---|---|
| Exercise some | Over multiple years |
| Spread tax | Across tax years |
| May be better | For tax planning |
Tax Deferral Rules
CCPC Deferral
| Conditions Met | |
|---|---|
| Employee of CCPC | Yes |
| Deal at arm’s length | Yes |
| Meets conditions | Yes |
| Tax deferred | Until sale |
Annual Vesting Limit
| 2024+ Rules | |
|---|---|
| First $200K vesting/year | Eligible for deduction |
| Amounts over | May not get deduction |
| CCPCs | Often exempt |
ACB and Capital Gains
Your Adjusted Cost Base
| ACB | = Exercise price + Taxable benefit |
|---|
Example
| At Exercise | |
|---|---|
| Exercise price | $10,000 (1,000 shares × $10) |
| Benefit reported | $30,000 |
| Your ACB | $40,000 |
Later Sale
| At Sale | |
|---|---|
| Sale price | $50,000 |
| ACB | $40,000 |
| Capital gain | $10,000 |
| Taxable (50%) | $5,000 |
CCPCs: Special Rules
Tax Treatment
| Advantage | |
|---|---|
| Defer tax | Until you sell shares |
| Lifetime exemption | May apply ($1M+ LCGE) |
| Lower complexity | At exercise |
Lifetime Capital Gains Exemption
| For CCPC Shares | |
|---|---|
| Exemption amount | $1,016,836 (2024) |
| Could shelter | Stock option gains |
| Complex rules | Get advice |
Employer Reporting
What’s on Your T4
| Box | Contains |
|---|---|
| 14 | Includes stock option benefit |
| 38/39 | Stock option deduction amounts |
Record Keeping
| Track | |
|---|---|
| Grant date | When received |
| Vesting schedule | When exercisable |
| Exercise price | What you pay |
| FMV at grant | For deduction eligibility |
| Exercise dates | When you bought |
| FMV at exercise | To calculate benefit |
| ACB | For future sale |
Strategies to Minimize Tax
Timing Exercises
| Strategy | |
|---|---|
| Low-income year | Exercise when income lower |
| Spread over years | Don’t exercise all at once |
| Near vesting cliff | Exercise before big vesting |
CCPC Strategies
| Strategy | |
|---|---|
| Hold until LCGE | Use lifetime exemption |
| Section 86 freeze | Advanced planning |
What to Avoid
| Mistake | Problem |
|---|---|
| Over-concentrating | Too much in one stock |
| Not exercising | Options expire worthless |
| Poor timing | Exercise in high-tax year |
| Forgetting ACB | Wrong capital gain calc |