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 ## Payment / Billing Integration
 
  * https://www.braintreepayments.com - Credit Card, Paypal, Venmo, Bitcoin, Apple Pay (, ...) integration. Single and Recurrent Payments. First $50 are free of charge.
+ * http://taxratesapi.avalara.com/ - Get the right sales tax rates to charge for the close to 10,000 sales tax jurisdictions in the USA. Free REST API. Registration required.
 
 ## Other Packs