Reviewed September 2026.
A credit union (CU) is member-owned. Most are federally insured by the NCUA for share accounts, but insurance follows the institution, not the label: some state-chartered CUs use private deposit insurance instead. A bank is typically for-profit; federally insured banks carry FDIC coverage on deposits. Neither is automatically cheaper or safer for everyday money. Use this frame for checking, savings, and day-to-day access. Loan APR shopping is a separate guide: Using a credit union for cheaper loans.
Decision frame: five questions
| Question | Lean CU when… | Lean bank (or online bank) when… |
|---|---|---|
| Membership | You already qualify (employer, community, family, association) | You need an account today with no field-of-membership step |
| Branch / ATM | Local branches matter and the CU joins a large surcharge-free network (e.g. CO-OP) | You need thousands of brand ATMs nationwide or heavy cash deposit access |
| Fees | Low or waived monthly fees fit your balance pattern | You already waive fees via direct deposit at a big bank you like |
| Digital tools | App + bill pay meet your needs after a real trial login | You need specific features (shared family tools, advanced budgeting hooks, Zelle limits that match your use) |
| Rates on cash | Share savings / money market beats your current APY after fees | A top HYSA at an online bank pays more and you accept thinner branch access |
Deposit insurance mechanics for both systems: FDIC/NCUA insurance in practice. Fee line-items to compare: Checking account fees.
Worked comparison (illustrative)
Alex needs a primary checking for rent autopay and a place for $8,000 emergency cash.
- Local CU: $0 monthly fee with $500 average balance, 15 free CO-OP ATMs nearby, savings APY 3.8%, mobile deposit of checks up to $5,000/day.
- National bank: $12/month fee waived with $1,500 direct deposit, dense ATM map, savings APY 0.01% on the standard savings bucket.
- Online bank: $0 fee, HYSA 4.2%, no branches; cash deposits via partner retail (fee or limit may apply).
Alex keeps checking at the CU for fee-free local cash and member service, and parks the emergency fund in the online HYSA. That mix is allowed; you are not required to pick one institution for everything: How to choose a checking account.
Practical gotchas either way
- Membership seasoning: some CUs want a share account open days or weeks before full digital features.
- Wire and cashier’s check fees: compare the fee schedule PDF, not the homepage.
- Overdraft and NSF: CU vs bank culture varies; read the actual opt-in form.
- Switching cost: plan direct deposit and autopay moves: Switching banks without missed payments.
Checklist
- Confirm you can join the CU (or skip to bank options).
- Verify federal deposit insurance: NCUA Credit Union Locator for CUs, FDIC BankFind for banks (do not rely on a logo alone).
- Download both fee schedules; circle monthly, ATM, wire, and stop-payment lines.
- Test ATM access within 5 miles of home and work.
- Compare savings APY on the balance you will actually hold.
- Open with a small deposit, run one bill cycle, then move the rest.
Educational only. Not banking or deposit advice. Products and networks change; verify fee schedules and insurance logos with the institution.