Note 1-27

27 If uncertainty about the future increases, the long-term interest rates will rise additionally by the amount of its risk premium. However, since setting a price-stability numerical target is a policy to stabilize prices at an increase of zero or slightly above zero percent, a more likely situation is that the risk premium may in fact decline rather than a situation occurring where deflation is continuing and forecasting future price movement is difficult, such as the current economic situation.