Savings bonds are purchased online through the United States Treasury’s website. In order to do this, you must first create an online account with the Treasury website. Be sure that your browser can support a 128-bit encryption before you begin this process, otherwise the transaction will not happen. The second step in buying a savings bond online through the Treasury department’s website is to go to your local bank and purchase U.S. Savings Bonds. In order to do this, you will need to fill out a form and then hand it to the bank teller. The third and final step in busying U.S. savings bonds is to sign up for the Treasury department’s direct deposit service online. This means that the money will be authomatically taken from your paychecks whenever you get paid.