A main share savings account is a basic savings product offered by credit unions, not banks
When you join a credit union, you open a main share savings account as part of your membership. This account is required — you cannot be a credit union member without one. It functions like a regular savings account at a bank, but it represents your ownership stake in the credit union itself. The money you deposit into this account is yours, and the credit union pays you interest on the balance, though the rate varies by institution.
The key difference from a bank savings account is that your deposits make you a partial owner of the credit union. Credit unions are member-owned cooperatives, not corporations. When you put money into your main share account, you are buying a share of the organization. This ownership structure is why credit unions often offer better interest rates and lower fees than traditional banks — they return profits to members rather than to outside shareholders.
Your main share account is separate from any other accounts you might open at the same credit union, such as a checking account, money market account, or certificate of deposit (CD). You can have only one main share account per credit union, but you can be a member of multiple credit unions and maintain a main share account at each one.
Key Takeaways
- A main share savings account is required to join a credit union and represents your membership ownership in that organization.
- Credit unions pay interest on main share balances and are insured by the National Credit Union Administration (NCUA) up to $250,000 per account.
- Most credit unions require a minimum deposit to open a main share account, typically between $5 and $25, though some have no minimum.
- You can withdraw money from your main share account at any time, but some credit unions may restrict how many withdrawals you can make per month.
- Your main share account is distinct from checking accounts and other savings products you might open at the same credit union.
Minimum deposit and account opening requirements
Credit unions set their own rules for opening a main share account, so requirements vary. Most require an initial deposit between $5 and $25 to establish the account. Some credit unions have no minimum deposit at all. You will need to provide identification, proof of address, and sometimes proof of employment or membership may be able to access (for example, if the credit union serves only employees of a specific company or members of a particular organization).
The process is usually faster than opening a bank account. Many credit unions let you open a main share account online or by phone, though some still require an in-person visit. Once your account is open, you can deposit money through direct deposit, transfers from another bank, cash deposits at a credit union branch, or mobile deposit if the credit union offers it.
Interest rates and how your money grows
Credit unions pay interest on main share balances, but the rate depends on the individual credit union. Rates are typically lower than what you might earn in a high-yield savings account at an online bank, but higher than what traditional brick-and-mortar banks offer on regular savings accounts. The rate your credit union pays may change over time as market conditions shift.
Interest is usually compounded monthly or quarterly, meaning you earn interest on your interest. The exact compounding schedule is stated in your account agreement. Because rates vary widely, it is worth asking your credit union what rate they currently pay on main share accounts and how often they compound interest.
Withdrawal limits and access to your money
You can withdraw money from your main share account whenever you need it. However, some credit unions limit the number of withdrawals you can make per month — often six withdrawals per statement cycle. This is a federal regulation that applies to savings accounts at credit unions and banks alike, though many institutions have relaxed this rule in recent years. Check with your credit union about their specific withdrawal policy.
Withdrawals can usually be made at an ATM, through a teller at a branch, by phone, or through online banking. If your credit union is part of a shared branching network, you may also be able to withdraw money at other credit union branches nationwide. Some credit unions charge a fee for excessive withdrawals or for using out-of-network ATMs, so review your fee schedule before opening an account.
NCUA insurance protection on your main share account
Your main share account is insured by the National Credit Union Administration (NCUA), a federal agency that protects credit union deposits the way the Federal Deposit Insurance Corporation (FDIC) protects bank deposits. The NCUA insures up to $250,000 per account holder per credit union. This means if your credit union fails, the NCUA will reimburse you for your balance up to that limit.
If you have multiple accounts at the same credit union — a main share account, a checking account, and a CD, for example — they are each insured separately up to $250,000. However, if you have two main share accounts at the same credit union (which is not normally possible), they would be combined for insurance purposes and covered by a single $250,000 limit.
How a main share account differs from a checking account
A main share account is designed for saving, not for frequent transactions. You cannot write checks against it or use a debit card to spend from it. A checking account, which you open separately at the same credit union, is what you use for everyday spending and bill payments. Many credit union members maintain both accounts — they keep their savings in the main share account and use a checking account for regular expenses.
Because a main share account is a savings product, it typically earns interest, whereas checking accounts usually do not. The trade-off is that you have fewer ways to access the money and may face withdrawal limits. If you need a product that combines the features of both, some credit unions offer money market accounts, which earn higher interest than main share accounts but allow more frequent transactions than a traditional savings account.
Closing a main share account and membership
If you want to close your main share account, you must withdraw your balance and formally end your membership with the credit union. You cannot simply stop using the account — you need to contact the credit union and request closure. Once your account is closed, you are no longer a member of that credit union and cannot use any of its services.
Some credit unions require you to maintain a minimum balance in your main share account to keep your membership active. If your balance falls below that minimum, the credit union may charge a fee or close the account. Review your credit union's membership agreement to understand any balance requirements.
Frequently Asked Questions
Can I have more than one main share account at the same credit union?
No. Each credit union member is allowed only one main share account per institution. If you want to maintain accounts at multiple credit unions, you can open a main share account at each one, but you cannot have two at the same credit union.
What happens to my main share account if I do not use it?
Your account remains open and earns interest as long as you maintain any required minimum balance. However, if your balance falls below the minimum or if you do not make any deposits or withdrawals for an extended period, the credit union may charge an inactivity fee or close the account. Check your credit union's policy on inactive accounts.
Can I transfer money from my main share account to my checking account at the same credit union?
Yes. You can transfer money between your accounts at the same credit union through online banking, by phone, or in person at a branch. Some credit unions may limit the number of transfers you can make per month, so ask about their transfer policy.
Is my main share account insured if the credit union fails?
Yes. The NCUA insures your main share account up to $250,000. If your credit union closes, the NCUA will reimburse your balance up to that limit. Balances above $250,000 are not covered, but most individual members do not reach that threshold.
Do I need a main share account if I only want a checking account at a credit union?
Yes. A main share account is required for credit union membership. You cannot open a checking account or any other product without first establishing a main share account, even if you never use it for saving.