What is the 30-day rule for superficial losses?

The 30-day rule means you cannot claim a capital loss if you (or your spouse, or a corporation you control) buy the same or identical property within 30 calendar days before or after the sale. This creates a 61-day window to avoid.

How do I avoid superficial loss rules?

Wait 31+ days before repurchasing, buy a similar but not identical investment (e.g., different ETF tracking similar index), or avoid selling at a loss if you want to maintain the position. The loss isn''t lost forever — it adds to your cost base.

Does the superficial loss rule apply to my TFSA or RRSP?

Yes, and this is the most dangerous trap. If you sell at a loss in a non-registered account and your TFSA or RRSP buys the same property within 30 days, the loss is denied AND permanently lost — it cannot be added to the cost base inside registered accounts. Always disable automatic purchases (like DRIP or pre-authorized contributions) in your TFSA/RRSP before tax-loss harvesting.

Can I sell VCN and buy XIC the same day to avoid the rule?

Yes. VCN (Vanguard FTSE Canada All Cap) and XIC (iShares Core S&P/TSX Capped Composite) track similar but different indexes and are considered different securities by CRA. This "ETF swap" strategy lets you claim the loss immediately while maintaining nearly identical Canadian equity exposure. Common pairs include VFV/XUS for U.S. equity and XAW/VXC for international.

Superficial Loss Rules Canada 2026: 30-Day Rule, Affiliated Persons & ETF Swaps

Q: What is a superficial loss in Canada?

A superficial loss occurs when you sell an investment at a loss and you or an affiliated person buys the same or identical property within 30 days before or after the sale. CRA denies the loss deduction, but adds it to the cost base of the repurchased shares.

The superficial loss rule is the single most important rule to understand before doing any tax-loss harvesting in Canada. If you sell an investment at a loss and buy back the same (or identical) property within 30 days before or after the sale, CRA denies the loss entirely. The 30-day window applies to you, your spouse, your TFSA, your RRSP, and any corporation you control. The good news: you can sidestep the rule completely by buying a similar but not identical substitute — sell VCN and buy XIC the same day, for example, since both track the Canadian market but are different securities. The loss you claim is real; the portfolio exposure barely changes.

What Is a Superficial Loss?

Concept	Details
Definition	Loss denied when same property repurchased within 30 days
Window	30 days before to 30 days after sale
Total period	61 days (30 + sale day + 30)
Affiliated persons	You, spouse, corporation you control, trust
Effect	Loss denied but added to cost base

The 61-Day Window

Timeline

Day	Status
Day -30 to Day -1	Purchase creates superficial loss
Day 0	You sell at a loss
Day 1 to Day 30	Purchase creates superficial loss
Day 31+	Safe to repurchase

Example

Date	Action	Result
March 1	Sell XYZ at $10,000 loss	—
March 15	Buy XYZ back	Loss denied (superficial)
Wait until April 1	Buy XYZ	Loss allowed

Who Are “Affiliated Persons”?

Affiliated Person	Triggers Rule?
You	Yes
Your spouse/common-law partner	Yes
Corporation you control	Yes
Trust you’re majority beneficiary of	Yes
Your adult child	No
Your parent	No
Your RRSP	Yes (special rules)
Your TFSA	Yes

TFSA and RRSP Complications

Account	If You Buy in Registered Account
TFSA	Loss denied AND lost forever (not added to cost base)
RRSP	Loss denied AND lost forever (not added to cost base)
Non-registered	Loss denied but preserved in cost base

Warning: Never sell in non-registered and buy in TFSA/RRSP within 30 days.

What Happens to the Denied Loss?

Non-Registered Account

Scenario	Treatment
Sell at $10,000 loss	Loss initially denied
Repurchase same shares	—
Cost base adjustment	Loss added to new cost base
Future sale	Effective loss recovered

Example: Cost Base Adjustment

Step	Amount
Original purchase	$50,000
Sale price	$40,000
Loss (denied)	$10,000
Repurchase price	$42,000
Adjusted cost base	$52,000 ($42,000 + $10,000)
Future sale at $55,000	Gain = $3,000 (not $13,000)

The loss isn’t lost — it’s deferred.

Registered Account (Loss Is Permanent)

Step	Amount
Sell in non-registered	$10,000 loss
Buy in TFSA within 30 days	Loss denied
Added to TFSA cost base?	No — loss gone forever

What Is “Identical Property”?

Identical

These Are Identical	Examples
Same stock	TD Bank → TD Bank
Same ETF	XEQT → XEQT
Same mutual fund	Same fund code

NOT Identical (Safe Substitutes)

Substitute Strategy	Example
Different company, same sector	Royal Bank → CIBC
Different ETF, similar exposure	VCN → XIC
Different index	S&P 500 ETF → Total US Market ETF
Different asset manager	Vanguard → iShares

Tax-Loss Harvesting Done Right

The Strategy

Step	Action
1	Identify investment with unrealized loss
2	Sell to realize loss
3	Wait 31+ days, OR
4	Buy similar (not identical) investment immediately
5	Claim loss against capital gains

Example: ETF Substitution

Sell	Buy Instead	Both Track
VCN (Vanguard Canada)	XIC (iShares Canada)	S&P/TSX Composite
VUN (Vanguard US)	XUU (iShares US)	US Total Market
VIU (Vanguard Int’l)	XEF (iShares Int’l)	Developed Markets
VEE (Vanguard EM)	XEC (iShares EM)	Emerging Markets

These are similar but NOT identical — superficial loss rule doesn’t apply.

Switch Back Later

Timeline	Action
Day 0	Sell VCN at loss
Day 0	Buy XIC (similar, not identical)
Day 31+	Sell XIC, buy VCN (if desired)
Result	Loss claimed, back to original position

Common Mistakes

Mistake 1: TFSA Purchase

Action	Result
Sell losers in non-registered	—
Buy same in TFSA within 30 days	Loss denied AND gone forever

Mistake 2: Spouse Purchases

Action	Result
You sell at a loss	—
Spouse buys same stock within 30 days	Your loss denied

Mistake 3: Dividend Reinvestment (DRIP)

Action	Result
Sell stock at loss	—
DRIP buys more shares within 30 days	Loss denied

Solution: Disable DRIP before selling, or wait 31 days after last DRIP purchase.

Mistake 4: Buying Before Selling

Action	Result
Buy more shares March 1	—
Sell original at loss March 15	Loss denied (bought within prior 30 days)

Record Keeping

Document	Why
Trade confirmations	Prove sale and purchase dates
Account statements	Show 31-day gap
Cost base calculations	Track adjustments
Substitute purchases	Document different securities

The Bottom Line

The superficial loss rule doesn’t prevent tax-loss harvesting — it just requires you to be smart about it. Sell the losing position and immediately buy a similar (not identical) ETF to maintain your market exposure. The most critical mistake to avoid: never sell at a loss in a non-registered account and rebuy in your TFSA or RRSP within 30 days — the loss is denied and permanently gone, not just deferred. Disable DRIP before selling, coordinate with your spouse, and keep trade confirmations proving the 31-day gap or the substitute security.