The new payroll true-up process is part of prospective billing. At the end of each private employer policy period (July), it is necessary to reconcile estimated payroll with actual payroll. This is called the true-up.
This report can be completed online here: http://ow.ly/4mWUlm or over the phone by calling 1-800-644-6292.
Here is a video to show you how to complete the report: