Explanation

Certificate of deposit (CD) accounts typically offer the highest interest rates among standard deposit accounts because:

• CDs require a fixed term commitment (e.g., 6 months, 1 year, 5 years) where funds cannot be withdrawn without penalty
• Longer lock-up periods provide banks with more stable funding, allowing them to offer higher rates
• Lower liquidity for depositors is compensated with higher returns

Comparison of account types:

• Checking accounts: Lowest rates, highest liquidity
• Savings accounts: Moderate rates, limited withdrawals
• Money market accounts: Higher rates than savings, check-writing privileges
• CDs: Highest rates, fixed terms with early withdrawal penalties

This reflects the fundamental trade-off between liquidity and yield in banking products.