Today's best CD rates can go up to 5.02%, varying by term and expected to decrease as the Federal Reserve lowers rates.CDs offer fixed interest rates for a set period with higher yields than high-yield savings accounts but come with withdrawal penalties.Three-month CD rates average 1.3%, with the highest rate at 4.67%, remaining unchanged from the previous week.For 12-month CDs, the highest interest rate available is 5.02%, with an average APY of 1.83%, unchanged from last week.Longer-term CDs have higher withdrawal penalties, with early withdrawal potentially resulting in a loss of a year's interest.Jumbo CDs have a 4.94% rate for a 6-month term, typically requiring a minimum deposit of $100,000 or more.CD rates vary between banks, so comparison shopping is recommended to find the best rates for your savings.Traditional banks generally offer lower CD rates than online banks, with differences in rates between financial institutions.CDs provide a simple savings tool with a fixed interest rate, requiring a minimum deposit and early withdrawal penalties.While stocks may outperform CDs in the long run, CDs offer stability and security with federal insurance coverage up to $250,000.