AM Best: proposed terrorism backstop changes could increase trigger to $10 million

AM Best's commentary on the proposed reauthorization of the federal terrorism insurance backstop carries one number and one direction: the trigger could increase to $10 million from $5 million, and insurers would be required to take on more terrorism losses. The word proposed is doing real work in that summary. The source material does not say the change has been adopted, and it names no sponsor, no bill number and no timeline for the proposal.

Trigger mechanics are where the stakes sit. Take the framing at face value and the arithmetic points one way: a terrorism event with losses between $5 million and $10 million would stay with the insurer rather than reach the federal share. That is inference from how a trigger works, not a figure the commentary states. What the extract leaves open is the size of the retained layer, because it does not describe how the federal share operates above the higher threshold or which lines of business would carry the loss.

This is commentary rather than a filing or a rule, and its function is to frame a change carriers may have to model, not to settle the drafting. The practical question a higher trigger raises is where retained terrorism loss lands on a property book, and that is a modeling input — loss costs, reinsurance attachment points, accumulation assumptions — rather than a line that gets amended on its own. The commentary puts no dollar figure on aggregate industry retention, so the scale of any repricing stays open.

For a backstop, the trigger and the federal share above it are the two lines that decide how much loss the industry keeps. The extract supplies the first and not the second, which leaves the more consequential half of the proposal unquantified. Watch whether the $10 million figure survives into actual text; until it does, the shift described here is a direction of risk rather than a number anyone can book.

The commentary's own headline makes the trade explicit: reauthorization as proposed shifts more risk to insurers. Whether that shift is large enough to change behavior is a question the source material does not answer, and the answer will turn on details the extract does not contain.