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Methodology for Savings, Money Market, and CD Rankings

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Updated November 22, 2023

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How We Find the Best Rates

Our universe of nationally available banks and credit unions includes about 200 physical and online institutions. About 200 of these offer CDs that meet our criteria, 100 offer what we call high-yield savings accounts, and 60 provide money market accounts.

Our team tracks the deposit rates at these institutions every business day, through a combination of automated and human processes, to ensure we find every great rate and update any out-of-date rates. We also regularly add institutions as they expand their availability or we learn of new nationwide players.

Most institutions update their rates online in the morning hours across multiple time zones, and our process for collecting any new rates data takes place throughout the day. We update our lists every business day, and the "updated" date on the page will tell you if the page has been updated for the day.

See which rates met our criteria with our picks for the best CDs, best high-yield savings accounts, and best money market accounts.

Eligibility for Inclusion

Institutions That Qualify

To be eligible for inclusion in our deposit account rankings, financial institutions need to meet two primary criteria. They must be:

Federally insured
Available nationwide

Federally Insured

For banks, this means they are a member of the FDIC and for credit unions, a member of the NCUA. This ensures that every customer’s deposits up to $250,000 (per person, per institution, and per ownership category—e.g., single account or joint account) are protected by the U.S. government should the institution fail or be seized. By only including FDIC and NCUA members in our rankings, you can rest assured that funds (up to $250,000) deposited with these institutions will be safe.

Along these lines, note that this means both brick-and-mortar and online banks are eligible for inclusion. If an online bank has FDIC insurance, deposits are just as safe there as at any other FDIC institution, regardless of whether the bank operates any physical branches.

Available Nationwide

To best serve our readers nationwide, we only include banks and credit unions that accept customers from across the country. This generally means that online account opening is available and residency in any U.S. state is acceptable.

We do make a few exceptions for banks that serve most but not all of the country; our threshold for being considered a nationwide bank is that it must serve customers from at least 40 states. The vast majority of the banks in our rankings do indeed serve all 50 states, but when that’s not the case, we indicate the exclusions with an asterisk.

Credit unions operate a bit differently in that they require membership. Eligibility for joining, called the “field of membership,” is often based on living in a particular geographic region or working for a certain employer.

But many credit unions open their doors to customers nationwide with a special pathway for those who don’t otherwise meet the requirements. Sometimes this is free and other times it requires a one-time donation or membership fee to the credit union’s nonprofit affiliate. In all of our articles on the best CDs, savings accounts, and money market accounts, we explain what is required to gain membership to the credit unions we include, while excluding any whose required donation is $40 or more.

Savings Accounts and Money Market Accounts That Qualify

For our rankings of high-yield savings accounts and money market accounts, we include those whose minimum balance to earn the high rate is no more than $25,000. Also, we disqualify those that cap their high-yield rate to only low balances, defined for our purposes as below $5,000. In other words, a savings account that advertises a high APY but only applies it to the first $1,000 of your balance would not qualify for our rankings.

In addition, we distinguish between savings accounts and money market accounts on the basis of check-writing privileges. Historically, money market accounts have allowed check writing and savings accounts have not, and we follow that traditional definition in our methodology.

Note, however, that “money market” has evolved to be used as a marketing term, with some banks including it in the name of their savings account even when it does not include check writing. For our purposes, if the account does not permit check writing, it is eligible for our savings account rankings. If it does allow checks, it can be in our money market account rankings.

Lastly, for any savings or money market account that is accessible only through a mobile app, we require that the app be available on both the iOS and Android platforms.

Certificates of Deposit That Qualify

Certificates of deposit can be considered for our standard CD rankings if they require a minimum initial deposit of $25,000 or less. Those with a required deposit of $50,000 to $100,000 qualify for our jumbo CD rankings. Though some CDs exist in the marketplace for balances of at least $250,000, the offerings are limited and we do not track nor rank these oft-called “super jumbo” certificates.

Note

We also exclude CDs from our definition of jumbo CDs that have a rate that’s not higher than what you could get from that institution for a deposit of less than $50,000. These are not really jumbo CDs, but rather, standard CDs marketed as jumbos.

To qualify for our rankings, CDs must also have a fixed rate that is known for the duration of the term. For this reason, certificates that are indexed, sometimes called “flex CDs” or “variable-rate CDs,” do not qualify, as their rate will fluctuate up or down with some unpredictable indicator, such as the prime rate or federal funds rate.

One exception is “bump-up” certificates that offer you the option to raise your rate during the term, usually just once and at your initiation. Since you are still guaranteed the original rate if you would like it for the full term, and since exercising the raised rate option would only improve your return, we do allow these certificates in our CD rankings.

How We Create Our Rankings

Ranking Order for Savings and Money Market Accounts

Among all the nationwide high-yield savings accounts or money market accounts that qualify for our lists, we rank them in order of interest rate, with those paying the highest APY topping the list. When two accounts pay the same rate, our next sorting criteria is the ongoing balance required to earn the APY. So, for example, an account requiring a $500 ongoing balance would rank higher than one requiring you to keep $10,000 in the account. If there is still a tie after considering the minimum ongoing balance, we rank based on the lowest required initial deposit. Ties after that are settled alphabetically.

Ranking Order for Certificates of Deposit

Certificates of deposit are initially ranked similarly to savings and MMA accounts, with the CD paying the highest APY sorted to the top. The first tie-breaker between any identical rates is the certificate’s maturity term, or duration. Those with a shorter duration are ranked higher than those with a longer term. This is important because not every CD has a standard term of 3, 6, 12, etc. months, with many odd-term certificates existing in the marketplace. We therefore group CDs in term ranges, such as 5-9 months for the 6-month CD ranking, 10-14 months for the 1-year CD ranking, and so forth.

When two CDs are tied both in APY and term, the third sort criteria is the minimum required deposit, with those requiring a smaller deposit ranking above those requiring a large funds commitment. If still tied after this third sort, the CDs are listed alphabetically.

Choosing the Right Account for You

When deciding where to stash your cash, shopping around can make a world of financial difference. Going with a top rate versus an average rate can net you hundreds or even thousands of dollars over time.

Our rankings aim to make your decision-making on a savings, money market, or CD account as easy as possible by distilling the rates data from thousands of deposit products and presenting you with the best-paying options. But the account you choose is still a personal decision. You may already have a relationship with an institution that is paying the seventh-best rate instead of the best, making that one much more convenient.

Or you may want to avoid a particular institution based on a negative past experience, or want to stick with a bank instead of a credit union. Account features like minimum deposit, CD term, and so forth can also make one product a better fit for you than another.

That’s why our rankings typically include 15 or more options for every product type, so you can choose the best one for your situation, confident that any one of them is among the top-paying accounts in the nation.

Meet the Banking Reviews Team

Sabrina Karl

Staff Writer, Financial Products & Services

Sabrina Karl has over two decades of experience writing about savings, CDs, and other banking topics. She is currently a staff writer at Investopedia and one of the country's top experts on how to earn as much as possible on the money you hold in the bank. She previously wrote for Bankrate.com, CreditCards.com, DepositAccounts.com, and RateSeeker.

Yasmin Ghahremani

Associate Editorial Director, Financial Products and Services

Yasmin Ghahremani is an Associate Editorial Director at Investopedia, where she oversees educational content about consumer financial products, ranging from checking accounts to life insurance. She joined the team in January 2023, after working for nearly four years in a similar role at The Balance. She has more than a decade of experience educating consumers about personal finance, which also includes stints as a managing editor at CreditCards.com and Wise Bread, and a contract editor at LendingTree.

Yasmin has also had an extensive international career covering business, technology, and the environment for broadcast and print outlets, including CNN, CNBC, and Asiaweek magazine. She has a Master of International Affairs degree from Columbia University.

Hilarey Gould

Senior Editorial Director, Financial Products & Services

Hilarey Gould has over a decade of journalism experience, with expertise in editing, content strategy, SEO, social media, and more. She is the Senior Editorial Director, Financial Products and Services, at Investopedia, and has held editorial roles at The Balance, Bankrate, SmartAsset, and realtor.com. Hilarey has a master's in journalism from the University of Missouri.