To open a money market account, you’ll pick an insured bank or credit union, gather a government-issued ID, your Social Security number, and your opening deposit, then complete an application online or in a branch. The institution verifies your identity, screens your banking history through ChexSystems, and activates the account once your first deposit clears. Online applications typically take under ten minutes, and most are approved within one to three business days.
Decide Where to Open It
The choice of institution shapes everything else: the rate you earn, the minimum you have to keep in the account, and the fees you’ll pay to keep it open.
Online-only banks tend to pay the highest yields because they don’t carry branch overhead. As of early 2026, the strongest online money market rates sit around 3.50% to 4.00% APY, while the national average hovers near 0.43%. Traditional brick-and-mortar banks usually pay less and ask for larger balances, but you get branch access for cash deposits and in-person help. Credit unions are a third route, often with competitive rates and lower fees, though you’ll need to qualify for membership first through your employer, where you live, or an organizational tie. Some credit unions let you join by making a small donation to a partner charity.
Before you commit, compare two numbers at each institution: the minimum opening deposit and the minimum balance required to avoid the monthly maintenance fee. Opening minimums range from nothing at some online banks to $2,500 or more at traditional institutions. Maintenance fees commonly run $10 to $25 per month, with waiver thresholds anywhere from $2,500 to $10,000. A higher APY doesn’t help if you’re paying $15 a month to maintain the balance.
One quick clarification before you shop: a money market account at a bank or credit union is federally insured up to $250,000 per depositor, per institution, per ownership category.1FDIC.gov. Your Insured Deposits A money market fund is a mutual fund sold through a brokerage; it isn’t federally insured and can lose value. If you want FDIC or NCUA protection, confirm you’re opening the deposit product.
Gather Your Documents and Information
Federal anti-money-laundering rules require every bank to run a Customer Identification Program when you open an account.2eCFR. 31 CFR 1020.220 – Customer Identification Program Requirements for Banks Have these items ready before you start the application:
- An unexpired government-issued photo ID: driver’s license, state ID, or U.S. passport.
- Your Social Security number or ITIN. Non-U.S. citizens can typically use a passport along with an ITIN, though specific documentation varies by institution.
- Proof of address, such as a recent utility bill, lease, or bank statement. Some institutions accept the address on a current driver’s license.
- Your initial deposit. Minimums range from nothing to $2,500 or more depending on the institution.
If you’re opening a joint account, each account holder provides their own ID and taxpayer identification number.
Complete the Application
You can apply online, in a branch, or sometimes by phone. Online is fastest and usually takes under ten minutes. You’ll enter personal details, employment information, and the source of your initial deposit. The question about fund sources isn’t nosy; federal regulations require it.
During the process you’ll sign a Form W-9 or its digital equivalent to certify your taxpayer identification number.3Internal Revenue Service. About Form W-9, Request for Taxpayer Identification Number and Certification You’ll also review and accept the Truth in Savings disclosure, which spells out your APY, interest rate, and all fees.4eCFR. 12 CFR Part 1030 – Truth in Savings (Regulation DD) Online applicants consent to electronic delivery under the federal E-SIGN Act, which gives digital signatures the same legal weight as ink.5Office of the Law Revision Counsel. 15 USC Ch. 96 – Electronic Signatures in Global and National Commerce Federal law also requires every institution to clearly disclose the APY, interest rate, and any fees that could reduce your earnings before you open the account.6Office of the Law Revision Counsel. 12 USC Ch. 44 – Truth in Savings Read the fee schedule carefully. The most expensive account isn’t the one with the lowest APY; it’s the one with fees you didn’t know about until they appeared on your statement.
After you submit, the institution screens your banking history through ChexSystems, which tracks how you’ve handled past deposit accounts. This isn’t a credit check and doesn’t affect your credit score.7ChexSystems. ChexSystems Consumer Score The bank is looking for red flags like previously bounced checks or involuntarily closed accounts. Most applications are approved within one to three business days, and many online banks give instant approval.
If Your Application Is Denied
If a bank rejects your application based on a ChexSystems report, it has to tell you the report played a role. Request a free copy of your ChexSystems consumer disclosure to see what’s on file; you’re entitled to one free report per year.8ChexSystems. Consumer Disclosure If anything listed is inaccurate, you can dispute it directly with ChexSystems.
If the negative information is accurate, some banks and credit unions offer second-chance accounts for people with troubled banking histories. These may carry higher fees or lack certain features, but they give you a path back to a standard account after a period of responsible use. Negative ChexSystems records generally stay on file for five years.
Fund the Account
Once you’re approved, move money in. The common methods:
- ACH transfer from a linked external account, usually one to three business days.
- Wire transfer, often same-day. Outgoing domestic wires generally cost $15 to $30.
- Mobile check deposit through the bank’s app, typically available within one to two business days.
- Branch deposit of cash or a check, available immediately or by the next business day.
Make sure the initial deposit meets the opening minimum. Falling short can trigger a maintenance fee or prevent the account from fully activating. If a higher balance is required to earn the advertised APY, confirm that number too; it’s often above the minimum to open.
Activate Your Checks and Debit Card
Most money market accounts come with a debit card, a checkbook, or both. They arrive by mail after approval, and you’ll activate them through the bank’s app, website, or an automated phone line. The check-writing feature is what sets money market accounts apart from plain savings accounts.
Withdrawals come with a wrinkle worth knowing before you start using the account. The Federal Reserve eliminated the federal six-per-month cap on savings-type account withdrawals in April 2020, and that change is permanent.9Federal Reserve. Federal Reserve Board Announces Interim Final Rule to Delete the Six-Per-Month Limit on Convenient Transfers From the Savings Deposit Definition in Regulation D Many banks still voluntarily enforce a limit of six to ten withdrawals per statement cycle, though. Going over can trigger an excess withdrawal fee, usually $5 to $15 per transaction, and repeated violations may lead the bank to close the account. ATM withdrawals and in-person transactions are typically unlimited; restrictions usually apply to electronic transfers, online bill payments, and check transactions. Check your account agreement for the specifics, because this varies widely.
Add a Beneficiary While You’re There
Most banks let you add a Payable on Death (POD) designation to your money market account at opening. A POD names one or more beneficiaries who automatically inherit the funds when you die, bypassing probate. During your lifetime the beneficiaries have no access to or claim on the money, and you can change or remove them at any time.
Adding POD beneficiaries can also expand your FDIC coverage. A revocable trust account, including POD accounts, with one owner naming three unique beneficiaries is insured up to $750,000 rather than the standard $250,000.10FDIC.gov. Deposit Insurance FAQs To claim funds after the account holder’s death, the beneficiary brings a death certificate and valid ID to the bank. If no living beneficiary exists at the time of death, the account reverts to the estate and goes through probate.