SECOND AMENDMENT FINANCIAL PRIVACY ACT – Amends existing law to revise provisions regarding the Second Amendment Financial Privacy Act.

Idaho's H 272 amends the Second Amendment Financial Privacy Act to prevent financial institutions from using "firearms codes" to identify firearm-related transactions. It prohibits banks and payment networks from discriminating against firearm retailers (e.g., by charging higher fees or declining transactions) based on whether a merchant sells firearms or ammunition. The bill also bans the disclosure of protected financial information related to such transactions and prevents government entities from maintaining registries of firearm owners. This directly affects firearm retailers, financial institutions processing payments, and customers making lawful firearm-related purchases in Idaho.