Discretionary participation feature is a contractual right to receive, as a supplement to guaranteed benefits, additional benefits:
(a) that are likely to be a significant portion of the total contractual benefits;
(b) whose amount or timing is contractually at the discretion of the issuer; and
(c) that are contractually based on:
(i) the performance of a specified pool of contracts or a specified type of contract;
(ii) realised and/or unrealised investment returns on a specified pool of assets held by the issuer; or
(iii) the profit or loss of the company, fund or other entity that issues the contract.
Source: IFRS 4 Insurance Contracts.