Surcharges 5.1.C (Updated)That's VISA USA. That seems to be a general consumer notice to USA consumers. I wouldn't assume those terms are applicable to international locations where banking laws and contract laws may be different. After all, most credit card issuers themselves tack on surcharges for international transactions.
A Merchant must not add any surcharges to Transactions, unless local law expressly requires that a
Merchant be permitted to impose a surcharge. Any surcharge amount, if allowed, must be included in
the Transaction amount and not collected separately.
A variance applies in the U.S. Region for the Visa Tax Payment Program.
A variance applies in the AP Region for New Zealand under certain terms and conditions, as
communicated to Members in New Zealand. Further information is available from Visa.
A variance applies in the AP Region for government payments in Australia.
http://corporate.visa.com/_media/visa-international-operating-regulations.pdf