But doesn't this not count the difference in the conversion?DCC is usually around 1% + GST for most cards and forex rate would be more like around 2% + GST even for very good cards. Therefore DCC is always beneficial when you get reward points.
My understanding was that say for example 100 usd is worth 8300 , when forex is calculated, it's calculated 3.5% + gst on the 8300. So a 100 usd purchase would be around 8600 with forex.
Whereas in dcc , 100USD would be worth 8700 instead since the conversion rate is higher. So 1.5% on this makes it 8800 on a 100 usd purchase.
This was my understanding and why people always recommend doing international transactions in the foreign currency rather than dcc.
Is this wrong ?