SPOTTEDSNAKE  Was just alerted to this posting by another user. Not sure what the original poster's setup was, but I did the following:

create a new SBT portfolio

add an EE bond with a $1,000.00 face value and issue date of 05/1991

set the "value as of" date to 4/2006 (matching the date of the original post)

and the interest calculated is indeed $622.40

Inquiries and trouble reports are best reported to Spotted Snake directly -- spottedsnake AT mac.com

Thanks,

Eric Friedman

Spotted Snake Software  
(Version 2.1)