Accepting American Express can help your business flourish by:
Become an American Express accepting Merchant.
American Express Card Members have more household income and report spending more than 86% those who don't carry our Card1. Compare those gains to the small surcharge percentage and you can see why many business owners are going 'surcharge-free'.
1Source: Roy Morgan Research (Mar 2016). "American Express Card Members report spending on average 86.1% more than Non American Express Card Members on all credit or charge card purchases in a typical month."