Why Interactive Brokers for Norbert's Gambit?
Interactive Brokers Canada is the lowest-cost retail option for Norbert's Gambit at scale (using the same Global X US Dollar Currency ETF, formerly Horizons, with tickers DLR/DLR.U on TSX). Their tiered commission structure works out to roughly $1.00 per leg on most trades — about a tenth of the cost on Questrade or RBC Direct Investing.
For amounts above CA$50,000, IBKR offers an even more attractive option: IDEALPRO direct FX conversion, which bypasses the ETF mechanic entirely and converts CAD to USD at the institutional interbank rate plus a tiny commission (typically 0.002% of the trade value (2 basis points), $2 minimum). For sums above CA$100,000, IDEALPRO is the cheapest path period.
The catch: IBKR's platform has a steeper learning curve than mainstream Canadian brokers. The Trader Workstation (TWS) interface is dense and designed for active traders. For occasional Gambit users, the learning investment may not be worth it under CA$30,000 in annual conversion volume.
Prerequisites
- An IBKR Canada account, funded with CAD. Account types: Individual, Joint, Trust, IRA-equivalent registered accounts (TFSA, RRSP).
- Margin enabled if you want to use IDEALPRO FX. Cash-only accounts cannot trade IDEALPRO.
- Access to TWS, IBKR Mobile, or IBKR Lite. TWS is most powerful; IBKR Lite is the simplified web interface.
The minimum to open an account is CA$0 — IBKR has no minimum balance requirement for Canadian accounts as of 2026.
Method A: DLR/DLR.U Gambit
Identical to other brokers but with IBKR-specific quirks:
- Buy DLR on TSX from your CAD cash. Limit order; commission ~CA$1.
- Wait for T+1 settlement.
- Submit a Currency Conversion request via TWS — Account Window → Currency Conversion. IBKR processes journals nearly in real time (seconds to minutes), much faster than other Canadian brokers.
- Sell DLR.U on TSX in your USD sub-account. Limit order; commission ~CA$1.
Total commission: ~$2. Bid-ask spread on a typical 3,650-share trade: ~CA$60. Total all-in cost on a CA$50,000 Gambit: roughly CA$62 (0.12%).
Method B: IDEALPRO FX direct conversion
For amounts above CA$50,000, IDEALPRO is faster, simpler, and cheaper:
- Open TWS → Trade → FX Trader.
- Select
USD.CADpair. - Enter the CAD amount you want to convert.
- Place a market or limit order. Execution is typically immediate at the prevailing institutional rate.
The commission is the lesser of $2 USD or 0.002% of trade value (2 basis points). For a CA$100,000 conversion, the total cost is $2 — about 0.002% all-in. There is no settlement delay and no ETF journal step.
Total cost comparison: IBKR vs other Canadian brokers
| Broker / Method | Cost on CA$50,000 outbound | Notes |
|---|---|---|
| IBKR IDEALPRO FX | ~CA$2 | Institutional rate, real-time |
| IBKR DLR/DLR.U Gambit | ~CA$62 | $2 commission + ~$60 spread |
| Disnat (Desjardins) | ~CA$20 | $0 commission + ~$20 spread |
| Questrade | ~CA$30 | 2 × $9.95 + spread |
| RBC Direct Investing | ~CA$25 | 2 × $9.95 + spread |
| Wise | ~CA$300 | 0.6% transparent fee |
| Canadian bank wire | ~CA$1,500 | 2.5-3% spread + wire fee |
At CA$50,000+ volume, IDEALPRO is unbeatable. Below that, Disnat's $0 commission Gambit is cheaper because IBKR's spread on DLR/DLR.U is not meaningfully smaller than Disnat's.
Pitfalls specific to IBKR
- Margin requirement for IDEALPRO. You must enable margin trading even if you don't borrow. Cash-only accounts cannot use IDEALPRO.
- Learning curve on TWS. The platform is dense. Plan to spend an hour or two with the TWS Demo before your first real Gambit.
- Inactivity fees historically. IBKR previously charged $10/month inactivity fees on accounts with low trading volume. The inactivity fee was largely removed in 2021, but always verify on the current rate sheet before relying on it.
- Tax-side complexity. If you use IDEALPRO for very large conversions, the CRA may scrutinize whether the activity rises to the level of business income vs. capital gains. For occasional Gambit users below CA$100,000/year, this is not a concern. Above that, consult a CPA.
Related guides
- Norbert's Gambit Canada — pillar
- Norbert's Gambit CAD→USD walkthrough
- Norbert's Gambit at Disnat ($0 commission)
- Our methodology