TD Bank is the biggest bank to plead guilty to Bank Secrecy Act violations. The Bank Secrecy Act which was enacted in 1970 to combat money laundering requires banks to establish and maintain programs that guard against money laundering.

TD Bank will pay $3 billion to settle charges that it failed to properly monitor money laundering by drug cartels, a source with knowledge of the settlement told CNN.

For years, TD ignored red flags from high-risk customers and created a "convenient" environment for bad actors to exploit, the government said.

TD Bank agreed to pay about $3 billion in fines to U.S. authorities and pleaded guilty on Thursday to money-laundering-related charges in a case brought by federal prosecutors, who said the Canadian bank made it “convenient” for criminals to open accounts, transfer funds and even deposit seven-figure sums of cash at its branches.

TD Bank will pay more than $3 billion in penalties after admitting to failing to adequately guard against money laundering, officials said.

TD Bank pleaded guilty on Thursday to failing to maintain an anti-money laundering program, among other charges.

TD Bank today pled guilty and agreed to pay over $1.8 billion in penalties to resolve the Justice Department’s investigation into violations of the Bank Secrecy Act (BSA) and failure to comply with anti-money laundering rules.

TD Bank will pay almost $3.1 billion in fines and other penalties and face a cap on its US retail banking assets after pleading guilty to failing to prevent money laundering by drug cartels, among others.

Toronto-Dominion Bank is facing fines totalling about $3.09 billion US from U.S. regulators after pleading guilty to multiple charges, including conspiracy to violate the Bank Secrecy Act and commit money laundering.