The FDIC on Tuesday will propose a leverage rule requiring big banks to have common equity equal to at least 5 percent of their assets—stricter than the international banking regulations known as Basel III, sources told CNBC.
The asset number includes off-balance-sheet items and will not be adjusted for riskiness. The proposed rule for so-called "simple leverage" is 2 percent higher than the minimum simple leverage rule under Basel III.
The leverage rule is intended to ensure that banks have enough capital to weather a severe downturn, like the one in 2008. Banks have argued that the leverage rules will cut into their lending by limiting the amount they can borrow to fund loans. By piling off-balance-sheet items into the ratio, the regulators have made banks' capital burdens much heavier.
The FDIC has been pushing for months for a more restrictive leverage ratio. The Federal Reserve was dragging its feet on the issue, sources say. Now it seems the FDIC won out, although last week press reports indicated the number could be as high as 6 percent.