In payroll we tend to use the terms EFT, ACH and EDI interchangeably. But in actual practice they are quite different. To help explain these important differences the National Automated Clearing House Association or NACHA has provided some guidance on their April 29, 2019 blog, written by Rober Unger. It is helpful to payroll professionals to understand these terms and use them correctly. I found this blog extremely helpful and I hope you do to.