Home > About USPS & News > Forms & Publications > Postal Periodicals and Publications > Publications > Publication 401 - Guide to Manifest Mailing System > 9 Acceptance Procedures > 9-5 Calculating the Postage Adjustment Factor
9-5.1 Each of the sampling/postage adjustment worksheets provides instructions for calculating the postage adjustment factor. The calculation is to be rounded off to three decimal places. See Exhibit 22 for examples of these calculations.
9-5.2 The mailer has the option to rework a mailing rather than pay a postage adjustment. The entire mailing must be reprocessed and submitted with new documentation.