A reservation of rights letter is often confused with a denial letter, but they are not the same. A denial letter says the insurer is refusing coverage or refusing to defend a claim. A reservation of rights letter says the insurer is stepping in for now - often to investigate, defend, or process the claim - while keeping the right to later argue that the policy does not actually cover some or all of it.

That difference matters because the insurance company may still hire a lawyer, ask for records, or negotiate, all while warning that certain policy exclusions, conditions, or coverage limits may apply. In plain English, the insurer is saying: "We're involved, but don't take that as a promise to pay everything." The letter usually points to parts of the insurance policy the company thinks may limit coverage, such as late notice, intentional acts, commercial-use exclusions, or disputes over who counts as an insured.

For an injury claim, a reservation of rights letter can affect settlement, defense strategy, and whether there will actually be money available at the end. It can also signal a future coverage dispute or declaratory judgment case separate from the injury lawsuit itself. If the insurer later withdraws coverage, the injured person and the policyholder may suddenly be dealing with a much harder road than the first letter suggested.