Fees & costsLesson

Currency Conversion Costs: The Hidden Fee for Cross-Border Investors

How brokers convert currencies, where the markup hides and how to avoid paying it twice.

7 min readFact-checkedPublished Sep 13, 2026

Key takeaways

  • Conversion markups can outweigh a lower commission.
  • Match account currency to the products you trade where possible.

If your account is in one currency and the product trades in another, every trade, dividend and withdrawal may pass through a currency conversion. A markup of a fraction of a percent on each conversion can exceed the commission you were comparing.

Where it appearsWhat to check
Deposit and withdrawalWhether the bank or broker converts, and at what rate
Buying foreign sharesAutomatic conversion markup versus a multi-currency balance
DividendsRate used to convert payouts
Margin or financingInterest charged in the currency of the debit balance

How to reduce the cost

  1. Open an account in your trading currency if you can. This avoids conversion on each trade.
  2. Use multi-currency wallets. Convert in larger, less frequent steps.
  3. Compare the markup to mid-market. Use a neutral reference rate on the day.
  4. Check both directions. Some brokers charge more on withdrawal.
About the authorBrokeli editorial team Brokeli's editorial team writes and reviews our education guides. Figures about brokers come from published research snapshots, and guides contain no trading signals.Editorial team →
Currency Conversion Costs: The Hidden Fee for Cross-Border Investors · Brokeli