CFR > Title 31 - Money and Finance: Treasury > SUBTITLE B—Regulations Relating to Money and Finance > CHAPTER II—FISCAL SERVICE, DEPARTMENT OF THE TREASURY (parts 200 to 391) > SUBCHAPTER B—BUREAU OF THE PUBLIC DEBT (parts 306 to 391) > PART 359—OFFERING OF UNITED STATES SAVINGS BONDS, SERIES I > SUBPART B—Definitive Series I Savings Bonds (§359.25 to §359.41-359.44) > 359.29—What amount of definitive Series I savings bonds may I purchase per year?