Download Visa and MasterCard critical bulletins (PDF) UPDATED January 2016. Many of these bulletins only change every year or two. Subscribe to our newsletter for announcements of card brand updates.
MasterCard EMV Guiding Principles for Acquirers – even though not directed at merchants, very insightful
MasterCard Acceptance Rules updated December 2014. See all MasterCard Rules
MasterCard Chargeback Guide October 2014
Visa Core Rules and Visa Product and Service Rules – April 2015
Part of Visa International Operating Guidelines. Over 800 pages of information including comprehensive dispute and chargeback information for merchants.
Visa Interlink Operating Regulations – currently unavailable 11/2015
First Data Integrated Partner Solutions EMV certified list Certified and Capable are different- currently unavailable 11/2015
American Express Merchant Policy Guide (link to site)
Discover Merchant site
Visa comprehensive download library (official site) includes:
E-Commerce Merchants’ Guide to Risk Management – currently unavailable 11/2015
PCI Data Security Standard OFFICIAL WEB SITE