Das (Credit Card) Experiment – Results
And the results are in! I was too lazy to research the exact breakdown of the charges, but it seems that all in all, the American Express is the best card for USD purchases and the (Standard Chartered) MasterCard is the card of choice for GBP purchases. That said, the differences really don’t add up to much – less than 1% – so perhaps the choice of card should be influenced more by the associated perks than the actual exchange rate.
Another takeaway is that the final SGD charge seems to be about 3-4% above the mid-market exchange rate, which would be relatively useful for budgeting purposes in the future.
S$12.4991 (14 Apr 2011 mid-market exchange rates, from x-rates.com)
S$12.90 (Citibank Visa)
S$12.99 (Standard Chartered MasterCard)
S$12.88 (American Express)
S$20.3965 (14 Apr 2011 mid-market exchange rates, from x-rates.com)
S$21.03 (Citibank Visa)
S$20.86 (Standard Chartered MasterCard)
S$21.01 (American Express)