Communities First Act

Community Banks Serving Their Communities First Act, or the Communities First Act - Revises regulatory requirements for community banks, including amendments to: (1) the Federal Deposit Insurance Act to permit certain insured depository institutions to submit a short form report of condition; (2) the Sarbanes-Oxley Act of 2002 to exempt certain small-sized depository institutions from annual management assessment of internal controls requirements; (3) the Securities Investor Protection Act of 1970 to exempt certain small-size community banks from its prohibition against advances for customers' net equity claims; (4) the Federal Reserve Act to increase the asset size of banks exempt from the limitation on extensions of credit to executive officers, directors, and principal shareholders; and (5) the Securities Exchange Act of 1934 to increase the shareholder registration threshold.

Amends the Truth in Lending Act to direct the Federal Reserve Board to prescribe regulations authorizing a consumer to waive the right of rescission as to certain transactions when the creditor is an insured depository institution.

Seasoned Customer CTR Exemption Act of 2007 - Instructs the Secretary of the Treasury to prescribe regulations to exempt a depository institution from filing a currency transaction report (CTR) in the case of certain qualified customers.

Amends additional Acts, including: (1) the Gramm-Leach-Bliley Act to exempt specified community banks from furnishing a mandatory privacy notice; (2) the Fair Credit Reporting Act to require a consumer's written consent before a consumer reporting agency may furnish a consumer report upon request from another creditor; and (3) the Federal Reserve Act to limit loans to executive officers.

Amends the Internal Revenue Code with respect to specified tax provisions for long-term certificates of deposit, loans secured by agricultural real property, qualified small issue bonds, Federal Deposit Insurance Corporation-insured limited liability companies, and young savers accounts. Repeals the individual alternative minimum tax for individuals and community banks. Reduces the tax rates for community banks.

Revises certain Subchapter S requirements for tax treatment of small businesses.

Amends the Small Business Act with respect to: (1) reduced fees for specified loans; and (2) a low documentation loan program.