How do the probability thresholds work?
The thresholds are applied to each obligation separately, except for large groups of similar obligations, such as product warranties, where the class as a whole is assessed. Probable means more likely than not. Possible covers outcomes that are less likely than not but more than remote. Virtually certain is close to certainty. IAS 37 treats liabilities and assets asymmetrically: a liability is recognised at probable, an asset only at virtually certain, reflecting caution about recognising income that may never be realised.
A worked example: a lawsuit
A customer sues a company for 1,000,000 over a defective product. The company's lawyers assess the case at each reporting date.
| Lawyers' assessment | Accounting |
|---|---|
| Year 1: about 30% chance of losing, likely damages 600,000 if lost | Contingent liability: disclose the nature, an estimate of 600,000 and the uncertainties. No provision. |
| Year 2: after new evidence, 65% chance of losing, most likely award 600,000 | Provision of 600,000, the most likely outcome for a single obligation. Disclose the provision. |
| After year 2 ends, before the accounts are approved: court awards 700,000 | Adjusting event under IAS 10: provision increased to 700,000. |
The company has also counter-claimed against its supplier. While a recovery is probable but not virtually certain, it is disclosed as a contingent asset; it is recognised only when the supplier agrees to pay or a court orders it and collection is assured.
What must be disclosed for contingent liabilities?
- A brief description of the nature of the contingent liability.
- Where practicable, an estimate of its financial effect.
- An indication of the uncertainties about the amount or timing of any outflow.
- The possibility of any reimbursement.
In extremely rare cases, where disclosure would seriously prejudice the company's position in a dispute, it may disclose only the general nature of the dispute and why the details have not been given.
What about events after the reporting date?
A court ruling, settlement or new evidence after the year end but before the accounts are approved is an adjusting event if it gives evidence about conditions at the reporting date, as in the lawsuit above. A claim arising from an event after the year end, such as an accident in January, is non-adjusting and disclosed if material.
What does a contingent liability note look like?
An example: "A customer has brought a claim against the company alleging that a product supplied in 2025 was defective, seeking damages of CU 1.0 million. The company is defending the claim. Based on legal advice, the directors consider that the claim is unlikely to succeed and no provision has been recognised. If the claim were successful, the directors estimate that damages of about CU 0.6 million could be payable."
Common mistakes
- Disclosing nothing because a provision is not required, when an outflow is possible and not remote.
- Recognising a probable insurance recovery as an asset before it is virtually certain.
- Describing every claim as remote without evidence from legal advisers.
- Forgetting to reassess at each reporting date: a claim that was possible last year may now be probable, or may have become remote.
Common contingent liabilities
| Situation | Usually |
|---|---|
| Guarantee of another company's loan, default unlikely (see financial guarantee contracts) | Financial guarantee under IFRS 9 for the issuer; contingent liability disclosure for others |
| Joint and several liability for a joint arrangement's debts | Provision for the expected share; contingent liability for the rest |
| Regulatory investigation at an early stage | Contingent liability, or nothing if remote |
| Tax dispute on income taxes | IFRIC 23, not IAS 37 |
Are contingent liabilities ever recognised?
Yes, in a business combination. IFRS 3 requires the acquirer to recognise a contingent liability of the acquired business at fair value if it is a present obligation that can be measured reliably, even if an outflow is not probable. See purchase price allocation, IAS 37 explained and IFRIC 23.
Need help applying the standards?
Our Chartered Accountants help finance teams and students apply IFRS and US GAAP to real transactions.
Questions people ask
What is a contingent liability under IAS 37?
A possible obligation depending on uncertain future events, or a present obligation where an outflow is not probable or cannot be measured reliably. It is disclosed, not recognised, unless remote.
When is a contingent asset recognised?
Only when an inflow is virtually certain; it is then no longer contingent. A probable inflow is disclosed.
Should a lawsuit be provided for or disclosed?
Provided for if losing is more likely than not and the amount can be estimated; disclosed as a contingent liability if losing is possible but not probable.
Are contingent liabilities recognised in a business combination?
Yes, at fair value, if they are present obligations that can be measured reliably, even if an outflow is not probable.
Sources
Every fee, date and rule on this page was taken from these official and primary sources.
Rules and fees change. If you are reading this long after October 4, 2026, confirm the figures with the source before you rely on them.
Related guides
More in IAS 37
This guide is general information. It is not tax or legal advice for your situation.