Well, there are 2 cases to consider;

• The donations thru our bank account are all automatically converted to EUR, whatever the source currency is. What we see on our accout is the final conversion result, when the bank fees are deducted and conversion done at some exhange rate.
• The donations thru PayPal show up as source currency on our account, and when I accept them they are converted to EUR, with the current exchange rate. On some of the donations PayPal deducts a processing fee, some are granted in full. (depending on whether the donor specified "payment for services" or "to family & friends")

With both kind of donations, the amount you see on the column "sum in EUR" is the final one we have on the account.