Best CD rates today, December 28, 2025 (lock in up to 4.1% APY)

Group 1 - The highest CD rate available as of December 28, 2025, is 4.1% APY, offered by Sallie Mae Bank on its 15-month CD and Synchrony Bank on its 9-month CD [2] - Historically, longer-term CDs offered higher interest rates, but currently, shorter-term CDs are providing better rates due to the economic climate [2] - The interest earned from a CD is determined by the annual percentage rate (APY), which accounts for the base interest rate and the frequency of compounding [3] Group 2 - An investment of $1,000 in a one-year CD with 1.63% APY would yield a total balance of $1,016.42 after one year, while a 4% APY would result in a balance of $1,040.74 [4] - A deposit of $10,000 in a one-year CD at 4% APY would grow to $10,407.42, earning $407.42 in interest [5] - Different types of CDs include Bump-up CDs, No-penalty CDs, Jumbo CDs, and Brokered CDs, each offering unique benefits and varying interest rates [5]