A named-storm deductible is a special percentage deductible that applies when a loss is caused by a storm that has been formally named by the National Hurricane Center — whether a tropical storm or a hurricane. It is one of the most common special deductibles on coastal commercial property, and often the largest single retention an owner faces.
Why it matters for owners
Because the named-storm deductible is expressed as a percentage of insured value, it scales with the size of the property — and it applies per named event. In an active season, that exposure can recur. Buying it down reduces the amount retained when a named storm causes a covered loss, which is why it is frequently the primary target of a buy-down. Use the calculator to see what your named-storm deductible equals in dollars.