Banks and credit unions are your main options, and the choice depends on what matters most to you

You can open a money market account at a traditional bank, an online bank, or a credit union. Each has different strengths. Traditional banks offer in-person service and local branches. Online banks typically pay higher interest rates because they have lower costs. Credit unions are member-owned and often have lower fees, but you must meet their membership requirements first.

The account itself works the same way regardless of where you open it — you deposit money, earn interest, and can write checks or make withdrawals up to a limit each month. The real differences are in how much interest you earn, what fees you pay, and how you prefer to do your banking.

Key Takeaways

  • Online banks typically offer the highest interest rates on money market accounts because they have fewer physical locations and lower operating costs.
  • Traditional banks offer in-person service and branch access, but usually pay lower interest rates than online alternatives.
  • Credit unions require membership but often charge lower fees and may offer competitive rates if you meet their may be able to access requirements.
  • You can compare current rates across institutions using financial websites, but rates change frequently so check directly before opening an account.
  • All deposits at FDIC-insured banks and NCUA-insured credit unions are protected up to $250,000, so institution safety depends on that insurance, not size.

Online banks usually offer the highest interest rates

Online banks have no physical branches, which means lower rent, fewer employees, and lower overhead costs. They pass those savings to customers through higher interest rates. If earning the most interest on your money is your priority, an online bank is usually the best choice.

The trade-off is that you cannot walk into a branch to deposit cash or speak to someone in person. Most online banks let you deposit checks by taking a photo with your phone, and they reimburse ATM fees at other banks. Some online banks are subsidiaries of larger traditional banks — for example, Charles Schwab Bank is owned by Charles Schwab — so they may have additional resources behind them.

Examples of online banks that offer money market accounts include Ally Bank, Marcus by Goldman Sachs, and American Express Personal Savings. Rates vary, so check each bank's website directly for the current rate before opening an account.

Traditional banks offer branches and in-person service

If you want to deposit cash, speak to someone face-to-face, or prefer having a local branch, a traditional bank is the right choice. Banks like Chase, Bank of America, Wells Fargo, and regional banks in your area all offer money market accounts.

The downside is that traditional banks almost always pay lower interest rates than online banks. This is not because they are worse — it is straightforward because their costs are higher, and they pass less of their profit to depositors. The difference can be significant. An online bank might pay 4% or higher, while a traditional bank might pay 0.5% to 1.5% on the same amount of money.

If you already have a checking account at a traditional bank, opening a money market account there is straightforward — you can often do it online or at a branch. The bank already has your information, so the process takes minutes.

Credit unions require membership but often have lower fees

Credit unions are not-for-profit institutions owned by their members. They often charge lower fees than banks and may offer competitive interest rates. However, you must meet membership requirements to join.

Membership requirements vary by credit union. Some are based on where you work, where you live, or what organization you belong to. For example, some credit unions are only open to employees of a specific company, members of a specific union, or people who live in a certain county. Others have broader membership — you might be able to join if you work in healthcare, education, or any number of other fields.

To find a credit union you can join, use the CO-OP Network locator or the Shared Branch locator on the Credit Union National Association website. Search by your location or employer to see which credit unions are open to you. Once you confirm membership may be able to access, you can contact the credit union to open an account.

How to compare rates across institutions

Interest rates on money market accounts change frequently — sometimes weekly. A rate that is highest today may not be highest next month. Before you open an account, check the current rate directly on the bank or credit union's website.

Financial websites like Bankrate, DepositAccounts, and NerdWallet list current rates across many institutions, updated regularly. These sites are useful for getting a quick overview of what is available, but always verify the rate on the actual bank's website before opening an account, because rates can change between when the website updates and when you explore.

When comparing, also look at the minimum deposit required to open the account and any monthly fees. Some banks waive fees if you maintain a certain balance or set up direct deposit. Others charge a monthly fee regardless. These small costs add up over time.

What to check before you open an account

Before opening a money market account anywhere, confirm that the institution is insured. Banks should be FDIC-insured (Federal Deposit Insurance Corporation). Credit unions should be NCUA-insured (National Credit Union Administration). This insurance protects your money up to $250,000 if the institution fails.

You can verify FDIC insurance by searching the FDIC's Bank Find tool on their website. You can verify NCUA insurance by searching the Credit Union Locator on the NCUA website. If an institution is not insured, do not open an account there.

Also check whether the bank or credit union offers online account opening or requires you to visit in person. Some institutions let you open an account entirely online in 10 minutes. Others require a visit to a branch. If convenience matters to you, this is worth confirming before you start the process.

The account opening process is straightforward

Once you have chosen an institution, opening a money market account takes 10 to 30 minutes. You will need a government-issued ID, your Social Security number, and proof of your current address (a recent utility bill or bank statement works). You will also need to decide how much money to deposit initially — this can be as little as $0 at some banks, or $2,500 or more at others.

If you are opening the account online, you will enter your information, verify your identity (some banks use video verification), and link a bank account to transfer your initial deposit. If you are opening in person at a branch, a banker will walk you through the same steps on their computer or on paper.

After you open the account, you will receive account details — your account number, routing number, and online login information. You can then start depositing money and earning interest.

Frequently Asked Questions

Can I move my money out of a money market account whenever I want?

You can withdraw money, but federal rules limit you to six withdrawals per month (though this rule is not always enforced). If you need to access your money more frequently, a regular savings account or checking account is better. Money market accounts are designed for money you want to keep in place and earn interest on.

Is my money safer at a big bank than a small one?

No. Safety depends on FDIC or NCUA insurance, not on the bank's size. Any FDIC-insured bank protects your deposits up to $250,000 the same way, whether it is a large national bank or a small local bank. Check the insurance status, not the size.

What happens if I do not meet a credit union's membership requirements?

You cannot open an account at that credit union. However, some credit unions have opened membership to anyone in the United States, or you may find another credit union in your area with different requirements. Use the CO-OP Network locator to search for all credit unions you are may be able to access to join.

Should I move my money to an online bank for the higher rate?

It depends on how much money you have and how much you value in-person service. If you have $10,000 or more, the difference in interest between a traditional bank (1%) and an online bank (4%) adds up quickly. If you have $1,000, the difference is smaller. If you rarely use branches, an online bank makes sense. If you regularly deposit cash or need to speak to someone in person, a traditional bank may be worth the lower rate.

Can I open a money market account if I have bad credit?

Yes. Money market accounts do not require a credit check. Banks and credit unions check your banking history through ChexSystems, which is different from a credit report. Even if you have been denied a checking account before, you may still open a money market account — ask the bank directly.