How to Minimize FX Costs When Investing Internationally
You can't eliminate FX costs in international investing, but you can reduce them dramatically with the right broker, the right share class, and the right timing. The strategies below can cut your FX drag from 1–2% to 0.1–0.15% per conversion.
Strategy 1: Use a low-cost FX broker
The single largest lever is broker selection. Switching from Hargreaves Lansdown to IBKR reduces FX cost from 1% to 0.1% — a 10× improvement. For most investors building significant international portfolios, this broker switch is worth more than any other optimization.
Strategy 3: Batch conversions
If you're investing monthly through a broker that charges a flat minimum per conversion (IBKR: $2 minimum), batching multiple months of contributions into a single conversion eliminates duplicate minimum charges. Instead of converting £500/month (paying $2 each time = $24/year), convert £1,500 quarterly (paying $2 three times = $6/year).
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