Nationwide Payment Systems NPS One Smart Invoicing Partner Program for Accountants, CPAs & QuickBooks Pros   Earn 20% ongoing residuals by referring clients to NPS One Smart Invoicing. Built for accountants, CPAs, bookkeepers, QuickBooks pros, and business consultants. Five referrals and your monthly fee is waived. Presented by Allen Kopelman, CEO — Nationwide Payment Systems-Host […]