[url]https://www.treasurydirect.gov/tdhome.htm[/url]
Interest rate today until December 2022 is 9.62% (period June 2022 to December 2022).
Maximum $10,000 per person per account per year if open and buy iBond online (electronically)
Maximum $5,000 per person per account per year if buy iBond in paper format (through local bank)