The long-awaited rule is expected to require that real estate professionals such as title insurers report the identities of the beneficial owners of companies buying real estate in cash to the Treasury's Financial Crimes Enforcement Network (FinCEN).

FinCEN is slated to propose the rule sometime this month, according to its regulatory agenda, though the timeline could slip, said two people briefed on the developments. Anti-corruption advocates and lawmakers have been pushing for the rule, which will replace the current patchwork reporting system.