(Updates with source on details and timescale in paragraphs5-6)
By William Schomberg
LONDON, Sept 26 (Reuters) - Global regulators have reached adraft agreement on a rule on stopping banks from being "too bigto fail" by requiring them to hold enough equity capital andbonds to avoid taxpayers being called on in a crisis.
The proposed standard is known as total loss absorbencycapacity or TLAC and Bank of England governor Mark Carney -- whochairs the global regulatory Financial Services Board (FSB) --has described it as the last major reform after the 2007-09financial crisis forced governments to shore up lenders.
The rule will apply to nearly all the 30 big banks that theFSB has deemed to be "globally systemic" such as Goldman Sachs, Deutsche Bank and HSBC.
"At today's meeting FSB members discussed the TLAC impactassessments, and agreed the draft final principles and theupdated term sheet," the FSB said in a statement late on Friday.
The FSB did not publish details of the agreement, but asource familiar with the deal said it mirrored proposals made ata G20 meeting in Ankara earlier this month.
That would see the two-stage introduction of a buffer ofdebt from 2019 that can be "bailed in" to raise equityequivalent to 16 percent of a bank's risk-weighted assets, thesource said, rising to 20 percent from 2022.
The FSB said members supported consistent implementation ofthe robust minimum standard, adding that the TLAC standard andits timelines would be finalised by the time of the G20 Summitin November.
Separately, the FSB also approved the first version of asimilar rule for major insurers, the Higher Loss Absorbencystandard, which requires them to hold an extra buffer on top ofthe basic capital requirements. (Additional reporting by Ankush Sharma in Bengaluru and HuwJones in London; Writing by David Milliken; Editing by HelenPopper)
HSBC Holdings (HSBA)