What is a book of business in insurance?
Your book of business is the set of in-force policies you have written and are entitled to service and earn from. It is the asset an insurance career actually builds — valued on the renewal income it produces, discounted by how reliably that income persists.
A book is worth what a buyer believes it will keep paying. Which is why persistency and retention drive valuation far more than written premium does: a large book that lapses is a small book with extra steps.
Two things make a book worth more than the sum of its policies. It should be documented — a buyer pays less for relationships that live in one person's head. And it should be diversified: heavy concentration in one carrier, one product or one lead source is a risk that gets priced in.
| Renewal income | the base |
|---|---|
| Retention above 90% | premium multiple |
| Retention below 80% | compresses the multiple |
| Owner dependency | a discount |
| Documented, transferable systems | a premium |
Multiples vary by size, growth and profitability. See the valuation piece.
Longer read: /blog/how-much-is-an-insurance-agency-worth