Follow-Form Excess: What Most 'Umbrella' Policies Really Are

A follow-form excess policy adds an extra layer of liability limit — commonly $1 million to $5 million — on top of your existing home and auto policies, following their terms exactly. "Follow form" means the wording flows through: if your underlying policy covers a claim, the excess layer covers it too; if the underlying excludes it, the excess excludes it too. The policy adds one thing only: limit.

That's the clean version. A true umbrella is different in theory — broader than the underlying policies, able to respond to some claims they exclude, usually with a self-insured retention you pay yourself on those broader claims. In the Canadian personal market the labels blur: many policies sold as umbrellas are follow-form excess at their core, sometimes with a handful of broadening extensions (personal injury coverage is the common one). The word on the brochure matters less than the wording in the policy.

Why it matters to you#

Follow-form is mostly good news: no surprise gaps between layers, no fights about whose wording applies. But it has a sharp corollary — weaknesses in your base policies travel upward. An exclusion in your auto policy is an exclusion in your excess layer. A boat or rental condo your home policy doesn't cover isn't covered up top either. Buying excess limit is not a substitute for getting the underlying policies right; it multiplies whatever is already there, gaps included. The price is the pleasant part: typically about $200–$300 per year for a first $1 million of excess coverage and roughly $50–$75 per additional $1 million (estimates based on typical Canadian broker pricing, not quotes).

In practice#

• A $3 million injury award against a driver with a $1 million auto limit and $2 million of follow-form excess: auto pays $1 million, excess pays $2 million, the family pays $0.
• The same award arising from an activity the auto policy excludes: the excess follows the exclusion. $0 from both layers.
• When comparing policies, ask one question: "What does this cover that my base policies don't?" The answer tells you whether you're buying follow-form excess or a true umbrella.

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