Yeah, so I run http://churnbuster.io/ http://churnbuster.io/ where we help a lot of companies with this exact issue. As a rule of thumb we would typically expec

Yeah, so I run http://churnbuster.io/ http://churnbuster.io/ where we help a lot of companies with this exact issue. As a rule of thumb we would typically expect about 10% of initial charge attempts to fail for a B2B business, and it wouldn't be abnormal to see 15-20% for a B2C business. It's a huge problem, and that's even on a best-of-breed payment processor that provides automatic card updating in the background. For anyone interested in digging in deeper on some of the lessons we've learned, I posted a bunch of thoughts on Quora earlier this year: http://qr.ae/RFWy23 http://qr.ae/RFWy23 . Otherwise, feel free to reach out to me directly at andrew@churnbuster.io .