Marijuana Businesses Access to Banking Act of 2013

Marijuana Businesses Access to Banking Act of 2013 - Prohibits a federal banking regulator from: (1) terminating or limiting the deposit insurance of a depository institution solely because it either provides or has provided financial services to a marijuana-related legitimate business; or (2) prohibiting, penalizing, or otherwise discouraging a depository institution from providing financial services to a marijuana-related legitimate business.

Prohibits a federal banking regulator, in addition, from recommending, motivating, providing incentives, or encouraging a depository institution not to offer financial services to an individual, or to downgrade or cancel financial services offered to an individual, solely because the individual: (1) is or later becomes a manufacturer, producer, owner or operator of a marijuana-related legitimate business; or (2) the depository institution was not aware that the individual is the owner or operator of a marijuana-related legitimate business.

Prohibits a federal banking regulator from taking any action on a loan to an owner or operator of: (1) a marijuana-related legitimate business, or (2) real estate or equipment that is leased to a marijuana-related legitimate business.

Grants immunity from federal criminal prosecution or investigation to a depository institution providing financial services to a marijuana-related legitimate business.

Prohibits the Secretary of the Treasury from requiring a depository institution, and any director, officer, employee, or agent of a depository institution, to report a transaction as suspicious solely because a party to the transaction is a marijuana-related legitimate business.