Best-Of Awards 2025 Methodology - Best Bank of Credit Union for CDs

Best-Of Awards 2025 Methodologies

Best Bank or Credit Union for CDs

How we picked the companies to evaluate:

We evaluated over 100 financial institutions, including the largest U.S. retail banks based on assets and internet search traffic, and the nation’s largest credit unions, based on assets and membership; and other notable and/or emerging players in the industry. We rated them on criteria including annual percentage yields, minimum balances, fees, digital experience and more. Some of the providers are NerdWallet partners, but this did not influence our selection of the winner.

How we chose the winner:

Financial institutions that offer certificates of deposit were rated on the following factors: 1-year APY (contributed to 30% of the rating), 3-year APY (40%), 5-year APY (20%) and minimum opening deposit (10%). Also, up to 20% extra credit was given for offering no-penalty CDs or other specialty CDs (step-up CD, bump-up CD or add-on CD). CD ratings are evaluated on a slight curve to ensure 5-star CD ratings are possible and representative of the best in the market.

In case of a tie, banks were compared by category in the following order until one institution remained:

Overall bank star rating.

Banking experience.

6-month CD rates.

Early withdrawal penalty.

Presence of flexible CD options (e.g., no-penalty CDs, step-up CDs, bump-up CDs, etc.).

How we verified our data:

NerdWallet writers and editors confirmed fees, rates, policies and other key features on each financial institution’s website. If an institution’s website was missing information, we contacted a representative directly for confirmation.

See all methodologies

Explore the List

AWARDS HOME • CREDIT CARDS • BANKING • PERSONAL LOANS • MORTGAGES • INVESTING • INSURANCE • TRAVEL