Business insurance. Personal attention.

Insurance, explained

Treaty reinsurance

Treaty reinsurance is an agreement under which a reinsurer accepts a defined class or portfolio of an insurer’s risks according to pre-agreed terms. Individual qualifying risks are generally included without separate negotiation for each one.

Business owner discussing insurance documents with an adviser
BAU Risk Services — insurance brokerage

01 / The meaning

What it means.

The treaty sets boundaries such as business class, territory, period, exclusions and the insurer’s retention. It can share premiums and losses proportionally or respond to losses above an agreed level. This differs from facultative reinsurance, which is negotiated for a particular risk. Automatic inclusion means inclusion under the treaty’s rules, not that every loss an insurer experiences falls within the arrangement.

For a business policyholder, treaty reinsurance sits behind the original insurance contract. It does not ordinarily replace the insurer’s obligations or create direct rights against the reinsurer. The arrangement can influence available capacity, but its terms should not be confused with the terms offered to the business. APRA’s reinsurance-management framework addresses how regulated insurers manage these arrangements and their associated risks.

02 / Put it in context

A practical example.

Hypothetical example

Hypothetical example: an insurer has a treaty for a portfolio of commercial property policies but needs separate facultative support for an unusually large factory. The factory owner still reviews the insurer and conditions named on its own property policy.

This example illustrates the term. It does not predict a claim outcome.

03 / Read the detail

What to check.

04 / Start a useful conversation

A question for your broker.

Does this reference to a treaty change our contract, or merely describe how our insurer manages its own exposure?

Further reading

Read the source guidance alongside the relevant policy wording.

General information only. This does not take into account your objectives, financial situation or needs. Before acting, consider whether the information is appropriate for you. Cover is subject to insurer acceptance and the policy terms, conditions, limits and exclusions. Read the Financial Services Guide and the relevant PDS (where applicable) and/or policy wording before deciding.

Let’s start with your business

A clearer conversation
about your insurance.

Tell us what you do, what has changed and what you need to understand.