How it works
IFRS 17 replaced the patchwork of local accounting treatments that existed under IFRS 4 with a single measurement framework. For auditors of insurance entities, the practical effect is that insurance provisions now consist of defined building blocks rather than a single actuarial reserve figure.
Under the general measurement model ( IFRS 17.32 ), the liability for remaining coverage has two main components: fulfilment cash flows and the contractual service margin (CSM). Fulfilment cash flows combine the present value of expected future cash outflows with a risk adjustment for non-financial risk ( IFRS 17.37 ). Unearned profit sits in the CSM and is released into profit or loss as the insurer provides coverage over the contract period.
The premium allocation approach ( IFRS 17.53 ) is available when the coverage period is twelve months or less, or when it produces results not materially different from the general model. Most general insurers writing annual policies (motor and property) use the PAA. Life insurers and those writing long-tail contracts typically cannot.
For the auditor, the first judgment to test is the entity's eligibility assessment for the PAA, because getting the classification wrong changes the entire measurement basis.
Key points
- Insurance provisions under IFRS 17 include a risk adjustment and (under the general model) a contractual service margin, both requiring significant judgment.
- The PAA is simpler but restricted. Only available for contracts with coverage periods of one year or less, or where it approximates the general model.
- Most audit findings relate to the boundary between the general model and the PAA, not to arithmetic errors.
- Auditing insurance provisions means testing actuarial models and assumption sets, plus the classification decision that determines which measurement model applies.
Why it matters in practice
Worked example: Van Hoorn Verzekeringen N.V.
Client: Dutch general insurer, FY2024, gross written premium EUR 320M, IFRS reporter, predominantly motor and property lines.
Step 1: classify contracts by measurement model
Van Hoorn writes annual motor policies (coverage period twelve months) and commercial property policies (also annual). Van Hoorn applied the PAA to both portfolios. On audit, the team verified that coverage periods do not exceed twelve months and reviewed the entity's PAA eligibility assessment, which demonstrated results are not materially different from the general model.
Step 2: test the liability for remaining coverage
Under the PAA, the liability for remaining coverage at 31 December 2024 equals unearned premium of EUR 148M. From the policy administration system, the team pulled inception and expiry dates to recalculate the allocation independently, arriving at EUR 146.8M (difference: EUR 1.2M, below PM of EUR 3.2M).
Step 3: test case reserves within the claims provision
At year-end, the claims provision totals EUR 89M. Of this, case reserves account for EUR 62M, set individually by claims handlers. Forty open claims were selected for testing, and reserve amounts were compared to adjuster reports, settlement correspondence, observed payment patterns on comparable claims, and the latest loss adjuster assessments.
Step 4: test the IBNR estimate
An incurred-but-not-reported (IBNR) component of EUR 27M was produced by the actuarial team using chain-ladder methods applied to paid and incurred development triangles. On audit, the team evaluated completeness of claims data fed into the model and tested development factors against historical emergence patterns. They then compared IBNR as a percentage of earned premium to PY results and industry benchmarks.
Conclusion: insurance provisions of EUR 237M (EUR 148M remaining coverage plus EUR 89M incurred claims) are supportable under the PAA.
What reviewers and practitioners get wrong
- Inadequate PAA eligibility testing. In its 2023 thematic review of IFRS 17 first-time adoption, the AFM noted that several firms failed to test the PAA eligibility assessment adequately, treating it as a foregone conclusion for annual policies without performing or documenting the required equivalence test against the general model. Teams SALY the PY assessment and move on. Inspectors notice.
- Testing components in isolation. Audit teams commonly test case reserves and IBNR separately but fail to assess whether the total claims provision is reasonable relative to earned premium and historical loss ratios. Ticking and bashing individual reserves is not enough. ISA 540.18 requires the auditor to evaluate the reasonableness of the estimate as a whole, not just its individual components.
Insurance provisions vs reinsurance contract assets
Insurers recognise insurance provisions for contracts they have written and reinsurance contract assets for coverage they have purchased from reinsurers. Under IFRS 17.60 –70, reinsurance contracts held are measured separately and cannot be netted against the underlying insurance provisions.
On an engagement, the most common error is testing the gross provision and assuming the reinsurance asset moves proportionally. It does not. This is where the file falls apart under inspection. Each reinsurance asset has its own fulfilment cash flows and its own CSM (or PAA calculation). It also carries a separate risk adjustment. A reinsurer's credit risk or a contract boundary difference can create material misstatement in the net position even when the gross provision is correctly stated.
Key standard references
- IFRS 17.32 –52: General measurement model (fulfilment cash flows, risk adjustment, CSM, and loss component).
- IFRS 17.53 –59: Premium allocation approach (eligibility criteria and simplified measurement).
- IFRS 17.37 : Risk adjustment for non-financial risk as a component of fulfilment cash flows.
- IFRS 17.60 –70: Reinsurance contracts held (separate measurement, no netting against gross provisions).
- ISA 540.18 : Evaluating the reasonableness of accounting estimates as a whole.
Related terms
Related tools
Related reading
Frequently asked questions
What is the difference between the general measurement model and the premium allocation approach?
The general measurement model (IFRS 17.32) measures insurance provisions using fulfilment cash flows plus a contractual service margin (CSM). It applies to all insurance contracts by default. The premium allocation approach (IFRS 17.53) is a simplified alternative available when the coverage period is twelve months or less, or when it produces results not materially different from the general model. Most general insurers writing annual policies use the PAA.
What do auditors test first when auditing insurance provisions?
The first judgment to test is the entity's eligibility assessment for the PAA, because getting the classification wrong changes the entire measurement basis. After that, the audit focuses on the liability for remaining coverage (unearned premium allocation) and the claims provision (case reserves plus IBNR), including the actuarial methods and data inputs used.
Can reinsurance contract assets be netted against insurance provisions?
No. Under IFRS 17.60–70, reinsurance contracts held are measured separately and cannot be netted against the underlying insurance provisions. The reinsurance asset has its own fulfilment cash flows and its own CSM or PAA calculation, with a separate risk adjustment. A reinsurer's credit risk or a contract boundary difference can create material misstatement in the net position even when the gross provision is correctly stated.