AP automation software screens vendors for fraud and non-compliance with global regulations (including AML, terrorism lists, and tax information matching) to prevent these types of payments and mitigate vendor risk. The best AP automation software provides an integrated self-service supplier portal for onboarding, including tax compliance documents like W-9 forms, vendor-customer communications, and centralized contract and document storage. The system helps you conduct business and perform ongoing vendor risk assessments as a vendor management solution. The AP automation software matches invoices to supporting documents, automates invoice approvals, and pays authorized bills to global vendors using mass payments for efficiency.