{"data":{"id":"us/31-cfr-359.5","jurisdiction":"us","citation":"31 CFR 359.5","heading":"What is the maturity period of a Series I savings bonds?","body":"Series I savings bonds have a total maturity period of 30 years from the issue date, consisting of an original maturity period of 20 years and an extension period of 10 years.","path":["Title 31—Money and Finance: Treasury","Subtitle B—Regulations Relating to Money and Finance","CHAPTER II—FISCAL SERVICE, DEPARTMENT OF THE TREASURY","SUBCHAPTER A—BUREAU OF THE FISCAL SERVICE","PART 359—OFFERING OF UNITED STATES SAVINGS BONDS, SERIES I","Subpart A—General Information"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-31.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:25Z","sha256":"6a6e339c7570b4e571cd8884fdd9fe198f35b3348470ea6d3b9627365c0d7496","source_id":"us-cfr","stale":true,"prev":"us/31-cfr-359.4","next":"us/31-cfr-359.6"},"notice":"GroundRules: Original legal text. Not legal advice."}