Free calculator that estimates how much insurance-claim revenue a collision repair shop is losing to missed supplements. Plug in claims per month, supplements per claim, average supplement value, and miss rate. The default 25-claim-per-month, 1.8-supplements-per-claim, $320-per-supplement, 50%-miss-rate inputs produce an estimated annual gap of $86,400 per shop, per year.
Step 1, enter claims per month: how many insurance claims your shop processes in an average month. Step 2, enter supplements per claim: industry baseline is 1 to 3, average 1.8. Step 3, enter average supplement dollar value: typical range $300 to $900, average $320. Step 4, enter your current miss rate: percentage of supplements your shop fails to catch today, default 50% for shops without a tracking system. The output is an estimated annual dollar gap, plus monthly and per-claim breakdowns.
Every supplement on this list represents potentially recoverable revenue, for work that was actually performed and documented. Missed supplements are usually not lost negotiations. They are line items that never got submitted, often because the teardown happened on a busy day, the estimator was pulled to another bay, or the supplement quietly aged past the shop's follow-up threshold. A claim management system with supplement aging surfaces them automatically so the office manager can act on the oldest open items first.
Inputs are the industry-typical numbers used in the Claimory recovery methodology at claimory.io/methodology. The defaults reflect a 25-claim-per-month independent collision shop. Adjust to match your book of business.
No. The output is an estimate based on stated inputs, not a guarantee. No tool recovers the full modeled gap, and real results vary by shop. Plug in numbers from your own claims for a shop-specific estimate.