Opening a CD is very similar to opening any standard bank deposit account. The difference is what you're agreeing to when you sign on the dotted line (even if that signature is now digital). After you've shopped around and identified which CD(s) you'll open, completing the process will lock you into four things: The interest rate: Locked rates are positive in that they provide a clear and predictable return on your deposit over a specific time period. The bank cannot later change the rate and therefore reduce your earnings. On the flip side, a fixed return may hurt you if rates later rise substantially and you've lost your opportunity to take advantage of higher-paying CDs. The term: This is the length of time you agree to leave your funds deposited to avoid any penalty (e.g., 6-month CD, 1-year CD, 18-month CD, etc.) The term ends on the "maturity date," when your CD has fully matured and you can withdraw your funds penalty-free. The principal: With the exception of some specialty CDs that allow add-on deposits, this is the amount you agree to deposit into the CD, at the time of opening. The institution: The bank or credit union where you open your CD will determine aspects of the agreement, such as early withdrawal penalties (EWPs) and whether your CD will be automatically reinvested if you don’t provide other instructions at the time of maturity. Once your CD is established and funded, the bank or credit union will administer it like most other deposit accounts, with either monthly or quarterly statement periods, paper or electronic statements, and usually monthly or quarterly interest payments deposited to your CD balance, where the interest will compound.