Where future discretionary benefits depend on the assets held by the insurance or reinsurance undertaking, undertakings shall base the calculation of the best estimate on the assets currently held by the undertakings and shall assume future changes of their asset allocation in accordance with Article 23. The assumptions on the future returns of the assets shall be consistent with the relevant risk-free interest rate term structure, including where applicable a matching adjustment, a volatility adjustment, or a transitional measure on the risk-free rate, and the valuation of the assets in accordance with Article 75 of Directive 2009/138/EC.