This is why South African news coverage pays close attention to Federal Reserve decisions, even though the Fed has no direct authority over South Africa. The Reserve Bank's own Monetary Policy Committee has to factor in these global capital flow pressures when setting the repo rate, sometimes holding or adjusting rates partly in response to what's happening in Washington, not only local inflation data.
Source: South African Reserve Bank
Frequently Asked Questions
Why do higher US interest rates weaken the rand?
Investors can earn a safer return holding US dollar assets when US rates rise, so capital tends to shift away from emerging market currencies like the rand toward the dollar.
Does the SARB have to follow the US Federal Reserve's decisions?
No — SARB sets South Africa's repo rate independently based on domestic inflation and growth conditions, but it does factor in global rate movements as one input among several.
Does this affect ordinary South Africans, or only large investors?
It affects ordinary South Africans too, through the rand's exchange rate, fuel and import prices, and indirectly through how the SARB sets local interest rates that determine home loan and credit costs.