I am traveling from the US to Entebbe this week with Qatar Airways and I expect my baggage to be overweight. Now I am confused at the applicable rate for excess baggage. Is it $40 per kg in the table that applies to me since I am traveling to Africa or is it the $50 that applies since I am traveling from the US?
Since you're travelling from the US, your first leg is the one that determines the fees in this case. Note that the fees are per piece for the second table (not per kg) and that the fee will vary depending on whether you booked through a QA office (65USD) or online (50USD).