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Questrade USD purchases: when a margin debit earns interest

A positive CAD balance does not automatically fund a USD purchase in a margin account; inspect currency-specific debits and the current interest schedule.

On this page 4 sections

Separate currencies

The margin page says Questrade does not automatically exchange currencies in margin accounts. If USD is insufficient for a US security, the resulting USD borrowing can attract interest despite a separate CAD balance.

Sources for this section
CAD cash ≠ automatic USD conversion; USD overnight debit can accrue interest; Posting can occur the following month
Rules checked 27 Oct 2026; examples are illustrative Open full-size diagram
Diagram explained

Review each currency balance before assuming cash funding

  1. CAD cash ≠ automatic USD conversion
  2. USD overnight debit can accrue interest
  3. Posting can occur the following month

Interest follows the overnight debit

Rates are annualised, calculated daily and posted around the middle of the following month. A fee appearing later is therefore not necessarily a new loan created on its posting date.

Sources for this section

A simple account example

A hypothetical account with CAD cash but a USD 1,000 overnight debit should review that USD debit separately. No interest amount is estimated here because rate tier, currency and the actual daily balance matter.

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Margin calls are not a promised grace period

The schedule permits liquidation in some cases without prior notice. Review the relationship disclosure and total account costs; a commission-free equity order does not remove borrowing risk or ongoing margin obligations.

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