On a byproduct basis, gold all-in sustaining costs, or AISC, will decline for two consecutive years in 2020 and 2021 due to a weak foreign exchange environment and tight control of sustaining capital and exploration spending. S&P Global Market Intelligence projects all-in sustaining costs (AISC) for 2020 and 2021 to fall by 2.2% and 5.8%, respectively, year over year, reversing the trend of rising costs through 2019, and to hit a 8-year low in 2021.
Identify the key drivers of the declining gold all-in sustaining costs.