The Basel Committee on Banking Supervision has granted a four-year reprieve and phase-in period for its liquidity-coverage ratio, a step that banks had argued was necessary to sustain lending. Originally, banks were required to have in 2015 sufficient liquid assets to cover expected outflows over 30 days. The date for that has been changed to Jan. 1, 2019, with banks needing to show a 60% ratio in 2015.