OneBill has out-of-the-box integrations for Avalara (AvaTax), BillSoft (EZTax) and SureTax. These are point-and-click integrations that you can set up yourself. If you require integrations with other tax services, let us know and we’ll get you a quote. Most are straightforward to integrate with OneBill. For really straightforward taxation, OneBill has tax calculations included within the Standard Edition.