How Glass Shops Can Improve Their Invoice Approval Rate
Rejected or delayed invoices cost glass shops time and money. The most common reasons for invoice issues are preventable — and fixing them means faster payment and a stronger network reputation.
Use the correct NAGS part number. Every part should reference the appropriate NAGS number for the specific vehicle. Generic or incorrect part numbers are the most common reason invoices are flagged for review.
Include all required documentation. Most TPAs require photos of the completed work, the original damage, and the NAGS label on the installed glass. Missing photos trigger review delays.
Bill according to the approved pricing schedule. Every carrier program has specific labor rates, material allowances, and part markups. Billing above these rates — even slightly — will result in line-item adjustments.
Document recalibration properly. If ADAS recalibration was performed, include the pre- and post-calibration reports, the type of calibration (static, dynamic, or both), and photos of the setup. Undocumented recalibration charges are frequently denied.
Submit invoices promptly. Invoices submitted within 24 to 48 hours of job completion process faster than those submitted weeks later. Timely submission also reduces the chance of missing documentation.
Double-check the claim details. Ensure the VIN, policyholder name, date of loss, and referral number match the original dispatch. Mismatched information creates reconciliation delays.
Clean invoices get paid on the first pass. Shops that invest a few extra minutes in documentation accuracy save days or weeks in payment turnaround — and build a reputation as reliable network partners.