Global banking regulators have agreed on a proposal to slap an extra capital charge on the world's biggest banks to make them safer by 2019.

The Governors and Heads of Supervision said after a meeting in Basel on Saturday the proposal would be put out to public consultation next month.

The additional loss absorbency requirements are to be met with progressive common equity tier 1 capital requirement ranging from 1 percent to 2.5 percent, depending on a bank's systemic importance, the committee said in a statement.

An additional 1 percent surcharge would also be imposed if a bank becomes too big.

The plans, which need approval from world leaders in November, would be phased in between January 1 2016 and end of 2018.

(Writing by Huw Jones; Editing by Toby Chopra)