65 Westgold Resources Limited Annual Report 2022 3. SIGNIFICANT ACCOUNTING JUDGEMENTS, ESTIMATES AND ASSUMPTIONS (CONTINUED) Significant accounting estimates and assumptions (continued) The provision matrix is initially based on the Group’s historical observed default rates. The Group calibrates the matrix to adjust the historical credit loss experience with forward-looking information. For instance, if forecast economic conditions are expected to deteriorate over the next year, which can lead to an increased number of defaults, the historical default rates are adjusted. At every reporting date, the historical observed default rates are updated and changes in the forward-looking estimates are analysed. The assessment of the correlation between historical observed default rates, forecast economic conditions and ECLs is a key estimate. The amount of ECLs is sensitive to changes in circumstances and of forecast economic conditions. The Group’s historical credit loss experience and forecast of economic conditions may also not be representative of customer’s actual default in the future. Share-based payment transactions The Groupmeasures the cost of equity-settled transactions with employees by reference to the fair value of the equity instruments at the date at which they are granted. The fair value is determined by using an appropriate valuation, using the assumptions as discussed in Note 29. The accounting estimates and assumptions relating to equity-settled share-based payments would have no impact on the carrying amounts of assets and liabilities in the next annual reporting period but may impact expenses and equity. Estimating the incremental borrowing rate Where the Group cannot readily determine the interest rate implicit in its leases, it uses the relevant incremental borrowing rate (IBR) to measure lease liabilities. The IBR is the rate of interest that the Group would have to pay to borrow over a similar term, and with a similar security, the funds necessary to obtain an asset of a similar value to the right-of-use asset in a similar economic environment. Significant judgement in determining the lease term of contracts with renewal options The Group determines the lease term as the noncancellable term of the lease, together with any periods covered by an option to extend the lease if it is reasonably certain to be exercised, or any periods covered by an option to terminate the lease, if it is reasonably certain not to be exercised. Significant judgement in relation to future cash flow The Group has several lease contracts relating to premises and power stations that include extension and termination options. These options are negotiated by management to provide flexibility in managing the leased-asset portfolio and align with the Group’s business needs. Management exercises significant judgement in determining whether these extension and termination options are reasonably certain to be exercised. For renewal options that were reasonably certain to be exercised, these have been included in the calculation of right-of-use assets and lease liabilities. 4. FINANCIAL RISK MANAGEMENT OBJECTIVES AND POLICIES The Group’s principal financial instruments comprise receivables, trade and other payables, finance lease and hire purchase contracts, cash and cash equivalents, deposits and equity investments. Risk exposures and responses The Group manages its exposure to key financial risks in accordance with the Group’s financial risk management policy. The objective of the policy is to support the delivery of the Group’s financial targets while protecting future financial security. The main risks arising from the Group’s financial instruments are interest rate risk, credit risk, equity price risk and liquidity risk. The Group uses different methods to measure and manage different types of risks to which it is exposed. These include monitoring levels of exposure to interest rate, foreign exchange risk and assessments of market forecasts for interest rate, foreign exchange and commodity prices. Ageing analysis and monitoring of receivables are undertaken to manage credit risk, liquidity risk is monitored through the development of future rolling cash flow forecasts. The board reviews and agrees policies for managing each of these risks as summarised below. Primary responsibility for identification and control of financial risks rests with the Board. The Board reviews and agrees policies for managing each of the risks identified below, including for interest rate risk, credit allowances and cash flow forecast projections. Details of the significant accounting policies and methods adopted, including the criteria for recognition, the basis of measurement and the basis on which income and expenses are recognised, in respect of each class of financial asset, financial liability and equity instrument are disclosed in Note 2 to the financial statements. (a) Interest rate risk The Group’s exposure to risks of changes in market interest rates relate primarily to the Group’s interest-bearing liabilities and cash balances. The level of debt is disclosed in Notes 23 and 24. The Group’s policy is to manage its interest cost using fixed rate debt. Therefore, the Group does not have any variable interest rate risk on its debt. The Group constantly analyses its interest rate exposure. Within this analysis, consideration is given to potential renewals of existing positions, alternative financing positions and the mix of fixed and variable interest rates. There is no significant exposure to changes in market interest rates at the reporting date.
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