Europe / EEA:
Visa:
visaeurope.com/about-us/interchange-fees/
Mastercard:
mastercard.co.uk/en-gb/about-mastercard/what-we-do/interchange/european-interchange-rates.html
USA:
Visa:
usa.visa.com/support/small-business/regulations-fees.html
Mastercard:
mastercard.us/en-us/business/overview/support/merchant-interchange-rates.html
Australia:
Visa:
visa.com.au/about-visa/interchange.html
Mastercard:
mastercard.com.au/en-au/about-mastercard/what-we-do/interchange.html
New Zealand:
Visa:
visa.co.nz/about-visa/interchange.html
Mastercard:
mastercard.co.nz/en-nz/about-mastercard/what-we-do/interchange.html