People often mix up a claim with a proof of loss, and insurers do not always rush to clear that up. A claim is the basic notice that something happened and you want coverage. A proof of loss is a more formal, usually written and signed statement that sets out what was damaged, how the loss happened, and how much money you are asking for under the policy.

That difference matters. Plenty of people think calling the insurance company, sending photos, or answering an adjuster's questions is enough. Sometimes it is not. If the policy requires a proof of loss, the insurer may demand a specific form, documents, repair estimates, medical bills, wage records, or sworn details. Miss that step, leave out key information, or submit it late, and the company may argue you failed to cooperate or failed to meet a policy condition.

For an injury claim, a proof of loss can affect timing, leverage, and payout. After a crash on an icy stretch of I-89 or a wreck caused by spring road damage, the insurer may use the request to pin down your story early and limit what it pays later. A proof of loss is not the same as admitting fault, and signing one does not automatically settle the claim. But it is a formal document, so accuracy matters. If the insurer asks for one, read the deadline in the policy instead of trusting casual phone advice.