Wash Sale & Superficial Loss across both passports.

US wash-sale (IRC §1091) and Canadian superficial loss (ITA §54). Critical for dual-residents who trade in both jurisdictions.

Sale date

Repurchase date

Loss amount (CAD/USD)

Jurisdiction

— Loss treatment

—

Days between—

US wash-sale window—

CA superficial loss—

Outcome—

Methodology: US §1091 disallows losses if substantially identical securities repurchased within 30 days before/after. CA ITA §54 has its own 30-day superficial loss rule. For dual-residents, BOTH apply on the same trade — the disallowed loss adds to the new cost base. Mercury and Bloomberg have no equivalent dual-jurisdiction tracker. Confirm with a cross-border CPA.