| Finance income and finance costs |
Finance costs comprise interest expense on borrowings which are recognized in net income and comprehensive income using the effective interest rate method, accretion on the royalty obligation, prepayment fees on the early repayment of long-term debt and amortization of deferred debt issue costs using the effective interest rate method, offset by any finance income which is comprised of interest income on funds invested and is recognized as it accrues in net income and comprehensive income, using the effective interest rate method.
Foreign currency gains and losses are reported on a net basis.