The best CD rates today can go up to 5.06%, varying based on certificate term lengths.CDs offer fixed interest rates for specific terms, with penalties for early withdrawals.Short-term CDs like three-month or six-month options can have rates up to 4.72% and 4.94% respectively.For one-year CDs, the highest rate is currently 5.02%, while the average APY is 1.87%.Two-year CDs have rates as high as 4.52%, with an average APY of 1.68%.Three-year CD rates reach 4.65%, while five-year CD rates can go up to 4.43%.Jumbo CDs offer rates up to 4.94%, with various minimum deposit requirements depending on the bank.Investing in CDs can provide higher interest rates compared to other savings options, with lower risk.CDs are protected by the Federal Deposit Insurance Corp. up to $250,000 in case of bank failure.The calculation of average CD rates excludes certain CD types like promotional offers, IRA CDs, and others.