Banks and credit unions offer the most straightforward routes

You can open a money market account at any bank or credit union that offers them. Most large national banks—Chase, Bank of America, Wells Fargo, Citibank—have money market accounts available online or in a branch. Credit unions often have them too, though the product may be called a money market savings account or money market share certificate depending on the institution.

The main difference between a bank and a credit union is ownership: banks are for-profit companies owned by shareholders, while credit unions are member-owned nonprofits. Credit unions sometimes offer slightly higher rates because they don't need to generate profit for shareholders, but they also have smaller branch networks and may charge fees if you use out-of-network ATMs.

You do not need to have an existing checking account at a bank to open a money market account there. You can walk in, call, or go online to start the process. Most banks will let you open an account entirely online without visiting a branch.

Online banks often pay higher rates than brick-and-mortar banks

Online-only banks like Marcus, Ally, American Express Personal Savings, and Discover have lower overhead costs than traditional banks with physical locations. They pass some of that savings to customers through higher interest rates on money market accounts. If your main goal is to earn as much interest as possible on your balance, an online bank is usually the better choice.

The trade-off is that you cannot walk into a branch to deposit cash or speak to someone in person. Most online banks accept transfers from other accounts, mobile check deposit, and wire transfers. If you need to deposit cash regularly, you may need to keep a small account at a local bank or credit union as well.

Online banks are FDIC-insured the same way traditional banks are, so your money is protected up to $250,000 per account type per institution if the bank fails.

Key Takeaways

  • National banks and local credit unions let you open a money market account in person or online, and credit unions sometimes offer higher rates because they are member-owned.
  • Online-only banks typically pay higher interest rates than brick-and-mortar banks because they have no physical branches to maintain.
  • You will need to provide identification, a Social Security number, and proof of address to open an account at any institution.
  • Money market accounts at banks and credit unions are FDIC-insured up to $250,000, and accounts at online banks carry the same protection.
  • Some banks require a minimum opening deposit or minimum balance to earn the advertised rate, so compare terms before you commit.

What documents and information you need to bring or provide

Every bank and credit union will ask for a government-issued photo ID (driver's license, passport, or state ID card), your Social Security number, and proof of your current address. Proof of address can be a recent utility bill, lease, mortgage statement, or bank statement with your name and address on it.

Some institutions may also ask for your employment information or income level, though this is less common for savings accounts than for credit products. If you are opening the account online, you will upload images of your ID and address proof through the bank's website or app, or you may be asked to verify your identity through a video call.

You will also need to decide how much to deposit initially. Some banks have no minimum opening deposit, while others require $25, $100, $500, or more. Check the specific bank's requirements before you start the process.

How to compare rates and terms across institutions

Interest rates on money market accounts change frequently—sometimes weekly—so the rate you see today may not be the rate you get next week. When you are comparing banks, look at the current rate, but also check whether that rate applies to all balances or only balances above a certain threshold. Some banks pay a higher rate on balances over $100,000 and a lower rate on smaller balances.

Also check the minimum balance required to earn the advertised rate. If a bank advertises 4.50% but only pays that rate on balances of $50,000 or more, and you have $10,000, you will earn a much lower rate. Read the fine print or call the bank to confirm what rate you will actually receive.

Look for banks that do not charge monthly maintenance fees or that waive fees if you maintain a minimum balance. Some banks charge $5 to $15 per month just to hold the account, which erodes your interest earnings.

Opening an account online versus in person

Opening online is faster and more convenient. You can complete the entire process in 10 to 20 minutes from your computer or phone, and the account is usually ready to use the same day or within one business day. You upload your ID and address proof, answer questions about your identity, and fund the account by transferring money from another bank account.

Opening in person at a branch takes longer—usually 30 minutes to an hour—but you can ask questions face-to-face and get immediate help if something goes wrong. Some people prefer this if they are not comfortable with technology or if they want to deposit cash immediately.

If you open online and later need to deposit cash, you can usually do so at an ATM if the bank has a network, or you can transfer money from another account. Some online banks partner with ATM networks like Allpoint or MoneyPass to let customers withdraw cash for free at thousands of locations.

Moving money into your account after you open it

Once your account is open, you can fund it by transferring money from another bank account you own. This is called an ACH transfer (Automated Clearing House) and usually takes one to three business days. Most banks let you set up these transfers online or through their mobile app without calling.

If you opened the account at a bank with physical branches, you can also deposit cash or a check at a branch or ATM. Online-only banks do not have ATMs or branches, so you will need to transfer money electronically or deposit checks by taking a photo with your phone.

Some banks offer a grace period after you open an account—usually 30 days—during which you can withdraw money without penalty. After that period, money market accounts typically limit you to a certain number of withdrawals per month (often six), though federal rules on this have relaxed in recent years. Check your bank's specific withdrawal policy before you open the account.

Frequently Asked Questions

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

Yes. Banks do not run a credit check to open a savings or money market account. They may check ChexSystems, a banking history database, to see if you have had problems with previous accounts, but a poor credit score will not stop you from opening a money market account.

What is the difference between opening at a big bank versus a small local bank?

Big banks usually offer lower interest rates but have more branches and ATMs. Small local banks may offer slightly higher rates and more personal service, but have fewer locations. Credit unions fall somewhere in between. The best choice depends on whether you value convenience or rate.

Do I need to have a checking account to open a money market account?

No. You can open a money market account at any bank or credit union without having any other account there. However, you will need a way to fund it, so you will need access to another bank account somewhere to transfer money in.

How long does it take to open an account and start earning interest?

Online accounts are usually active within one business day. In-person accounts at a branch can be active the same day. Interest begins accruing once your money is in the account and the account is open, though you may not see the interest posted until the end of the month.

What happens if a bank fails after I open an account there?

Your money is protected up to $250,000 by FDIC insurance (or NCUA insurance if it is a credit union). If the bank fails, the FDIC will transfer your account to another bank or send you a check for your balance. You will not lose money as long as your balance is under the $250,000 limit.