Portion of premium attributed to the coverage period that has already run.
Earned premium is the portion of premium that corresponds to the part of the policy term already used up. It reflects coverage the insurer has already provided, not just cash that happened to be collected.
That straight-line view is the simplest teaching model. Real-world earning can be affected by endorsements, audits, policy rewrites, and operational adjustments, but the basic idea is stable.
Readers often think premium is a single flat number with the same meaning everywhere. In insurance operations and actuarial analysis, that is not enough. The real question is how much premium matches the coverage period that has already passed.
That distinction matters because core metrics such as loss ratio and combined ratio are only meaningful when losses and expenses are compared with premium attributed to the same coverage period.
In Canadian insurance practice, earned premium shows up in:
Earned premium is also the direct counterpart to unearned premium: one measures the term already provided, and the other measures the term still to come.
On a one-year policy with an annual premium of CAD 1,200, a straight-line view would look like this:
| Point in term | Earned premium | Unearned premium |
|---|---|---|
| Effective date | CAD 0 | CAD 1,200 |
| 3 months elapsed | CAD 300 | CAD 900 |
| 6 months elapsed | CAD 600 | CAD 600 |
| 9 months elapsed | CAD 900 | CAD 300 |
| Expiry | CAD 1,200 | CAD 0 |
This example is deliberately simple. It shows why a policyholder can have paid several instalments without the insurer having earned the full annual premium yet.
Earned premium is not the same as premium paid to date. Billing timing and premium earning are related concepts, but they are not identical.
It is also wrong to assume earned premium tells the reader exactly what refund will be available if the policy ends early. Refund mechanics can depend on fees, minimum retained premium, and the cancellation basis.
Another common mistake is to treat earned premium as a purely accounting term with no practical value. In reality, it is one of the key bridges between policy operations and insurer performance measures.
The exact earning pattern can vary by product, endorsement history, audit adjustment, and insurer method. The straight-line approach is the best first teaching model, but operational detail is not always as simple as dividing the annual premium into equal monthly pieces.