Determine the value of a savings bond or a portfolio of savings bonds by inputting vital information about each bond into the TreasuryDirect.gov website. Find the bond series, denomination, serial number and issue date before clicking Calculate on the website, as of 2015.
Select the series of the savings bond from EE bonds, I bonds, E bonds or Savings Notes on TreasuryDirect.gov, then choose a denomination between $10 and $10,000. Input the bond's serial number that appears in the lower-right corner of a bond. Input the issue date, located on the upper-right corner, as a two-digit month and four-digit year. The value date defaults to the most recent date for which values are available. Alter the date to any time in the past to calculate the worth of a bond from a previous time frame.
Add more than one savings bond to create an inventoried portfolio, notes TreasuryDirect.gov. After clicking Calculate on the first savings bond, repeat the process to show a running total among a list of bonds. Save the file to your computer as an HTML only file on your hard drive.
The "Value as of" section provides a year-to-date interest calculation for income-tax purposes, according to TreasuryDirect.gov. Enter the date as December of a particular year to find out the interest for one tax year.