What is ONESOURCE software?

ONESOURCE is the name of our tax solution - whether you need to manage direct taxes on your business or taxes on everything you're selling and shipping to others in the US, Canada, or anywhere in the world. We are the leading, most trusted tax solution out there. We are trusted by the most prestigious, well-regarded tax professionals and have been for many years. We are cloud-based with a tax calculator that can handle millions of transactions, per minute, so if you are a global online store, use a particular payment provider (we have integrations), ecommerce software or accounting solution - we have integrations to the leading provider solutions.