Best CD rates today, December 21, 2025 (lock in up to 4.1% APY)

Core Insights - The current economic climate has led to shorter-term CDs offering higher interest rates compared to longer-term CDs, which is a reversal of historical trends [2] Group 1: CD Rates Overview - As of December 21, 2025, the highest CD rate available is 4.1% APY, offered by Sallie Mae Bank for a 15-month CD and LendingClub Bank for an 8-month CD [2] Group 2: Interest Earnings from CDs - The interest earned from a CD is determined by the annual percentage rate (APY), which reflects total earnings after one year, factoring in the base interest rate and compounding frequency [3] - For example, a $1,000 investment in a one-year CD at 1.63% APY would yield a total balance of $1,016.42, while a 4% APY would result in a balance of $1,040.74 [4] Group 3: Deposit Amount Impact - Increasing the deposit amount in a CD significantly enhances potential earnings; a $10,000 deposit in a one-year CD at 4% APY would grow to $10,407.42, resulting in $407.42 in interest [5] Group 4: Types of CDs - Various types of CDs offer different benefits, including: - Bump-up CD: Allows for a one-time request to increase the interest rate if bank rates rise during the term [5] - No-penalty CD: Enables early withdrawal without penalties [5] - Jumbo CD: Requires a higher minimum deposit (typically $100,000 or more) and may offer higher rates, though the difference may be minimal in the current environment [5] - Brokered CD: Purchased through a brokerage, potentially offering higher rates or flexible terms but with increased risk and possible lack of FDIC insurance [5]