A savings account is more liquid than a certificate of deposit, but typically provides slightly lower interest rates compared to the shortest duration CDs. With CDs, you must "lock--up" your money for a period of time, usually at least 3 months, but upwards of 6 years. In exchange for locking up your money, you get a higher interest rate than you would with a savings account. If you need the liquidity, then a savings account is the preferred savings vehicle.