A good annual percentage yield (APY) for a Certificate of Deposit generally hovers around 4%, depending on prevailing macroeconomic conditions and benchmark interest rates set by central banks. Because CDs lock in a fixed interest rate for a predetermined duration—ranging from three months to five years—securing a competitive yield protects your savings against market volatility. Savers should compare promotional offerings from online banks and credit unions to find yields that outpace inflation while ensuring their deposits remain fully protected under federal deposit insurance limits.