how many years to your saving bonds mature
Electronic savings bonds have more flexibility than paper bonds in that they can be bought in any increment of $25 up to $5,000. Paper bonds have seven increments of $50, $75, $100, $200, $500, $1,000 and $5,000. I savings bonds accrue value every month and take thirty years to fully mature. Interest compounds every six months. The formula is rather complicated: it is the fixed interest rate plus two times the half year inflation rate plus the fixed rate times the half year inflation rate.