As the National Taxpayer Advocate has repeatedly demonstrated, tax administrations in different countries can learn from each other with respect to a wide range of issues. A survey of taxpayer services in other jurisdictions reveals the widespread belief that effective taxpayer service enhances voluntary compliance. The Organization for Economic Cooperation and Development (OECD) reports indicate, among other things, that an expanded role of tax administrations, accompanied by reductions in resources, has often resulted in a shift to online services, but with an inadequate understanding of taxpayer preferences. Effective taxpayer service requires multiple service channels. Customer service in non-tax areas of government and in private industry is becoming more digital, but personal contact remains a pillar of service delivery.