The summary from the Bank of Japan's October board meeting advocates further flexibility in monetary policy to effectively continue with easing, while preventing side effects.
The BOJ decided to allow the long-term rate to exceed 1 percent to some degree, amid upward pressure on long-term rates.
The summary released on Thursday cites worries about the increasing risk of side effects on market function and volatility if strict long-term interest rate caps continue.
The greater flexibility in the yield curve control is expected to reduce the chance of speculative moves by investors.
The summary also indicates future normalization of the policy.
Some officials believe the likelihood of achieving the 2 percent price stability target has risen since July's policy meeting. They said the central bank will have to tweak the degree of monetary easing from the maximum level.
Others added that with an exit from the current policy in mind the BOJ must prepare the market for a world where interest rates exist, since they have been ultra-low for so long.