Big banks are the largest financial institutions in the country, measured by total assets and number of customers
A big bank is a commercial bank with assets typically exceeding $100 billion. In the United States, the "Big Four" are JPMorgan Chase, Bank of America, Wells Fargo, and Citigroup. These institutions hold trillions of dollars in customer deposits combined and operate thousands of branches nationwide. They offer the full range of banking services: checking and savings accounts, loans, credit cards, investment products, and wealth management.
The term "big bank" is not formally defined by regulators, but it describes banks large enough to be considered systemically important—meaning their failure would threaten the broader financial system. These banks are subject to stricter regulatory oversight, higher capital requirements, and regular stress tests by the Federal Reserve.
Size matters because it affects how the bank operates. A big bank processes millions of transactions daily, maintains complex technology infrastructure, and serves customers across multiple states and countries. This scale creates both advantages and disadvantages for account holders.
Key Takeaways
- Big banks are institutions with assets over $100 billion, including JPMorgan Chase, Bank of America, Wells Fargo, and Citigroup.
- They offer a wider range of services than smaller banks, including investment products and business banking, but often charge higher fees for basic accounts.
- Big banks have more branches and ATMs nationwide, making them convenient for people who travel or move frequently.
- Customer service at big banks is often automated or outsourced, which can mean longer wait times and less personalized attention than at regional or community banks.
How big banks make money differently than smaller institutions
Big banks generate revenue from multiple sources that smaller banks do not. Beyond interest on loans and deposits, they earn money from investment banking fees, trading, wealth management, and payment processing. A large bank might charge $15 monthly for a checking account, $10 for overdraft fees, and $3 for out-of-network ATM withdrawals—fees that add up across millions of customers.
Smaller banks and credit unions typically rely more heavily on interest income from loans and deposits. They have fewer revenue streams, so they often charge lower or no monthly account fees to remain competitive. The trade-off is that they may offer lower interest rates on savings accounts and charge higher rates on loans.
Big banks also benefit from economies of scale. They can spread technology costs, compliance costs, and employee salaries across a much larger customer base, which theoretically allows them to offer services at lower per-unit cost. In practice, however, big banks often pass savings to their most profitable customers—those with high balances or multiple products—while charging standard or higher fees to everyone else.
Branch networks and ATM access
Big banks operate thousands of branches across the country. JPMorgan Chase has roughly 4,700 branches; Bank of America has approximately 3,600. This physical presence means you can walk into a branch in most major cities and handle transactions in person. For people who value face-to-face banking or need to deposit cash regularly, this is a real advantage.
ATM networks are even more extensive. Big banks participate in shared ATM networks that give customers access to tens of thousands of machines nationwide. Withdraw cash at a competitor's ATM and your big bank typically does not charge a fee, because the banks have reciprocal agreements. Smaller banks and credit unions often charge $2 to $3 per out-of-network withdrawal.
The downside is that branch consolidation has accelerated in recent years. Many big banks have closed branches in rural areas and small towns, leaving some communities with limited in-person options. If you live in a less densely populated area, a regional bank or credit union may actually offer better local access.
Account fees and minimum balances
Big banks typically charge monthly maintenance fees for checking accounts, ranging from $10 to $15. Some waive the fee if you maintain a minimum balance—often $1,500 to $2,500—or set up direct deposit. Savings accounts may have monthly fees of $5 to $10, again waivable with a minimum balance.
Overdraft fees at big banks are usually $35 per transaction. If you overdraw your account multiple times in one day, you can incur $100 or more in fees. Some big banks have reduced overdraft fees or eliminated them for certain account tiers, but the standard remains high.
Regional and community banks, and especially credit unions, often charge no monthly fees and have lower or no overdraft fees. Online-only banks (which may be owned by big banks or operate independently) frequently offer checking accounts with no monthly fee, no minimum balance, and no overdraft fees. The trade-off is reduced branch access and sometimes lower interest rates on savings.
Customer service and account management
Big banks handle customer service through multiple channels: phone, email, chat, mobile app, and in-branch. However, phone lines are often routed to call centers where representatives handle dozens of calls per day. Wait times can exceed 30 minutes during peak hours. Chat and email support may take 24 to 48 hours for a response.
In-branch service varies. Some branches have dedicated personal bankers who can discuss account options and financial planning. Others operate more like transaction centers where staff process deposits and withdrawals but cannot discuss products in depth. The quality of in-branch experience often depends on the specific branch and how busy it is.
Smaller banks and credit unions typically offer more direct access to decision-makers. You may speak with the same loan officer or account manager repeatedly, which can make it easier to resolve problems or discuss your financial situation. The trade-off is that they may have fewer specialists and cannot offer the full range of products a big bank can.
Technology and digital banking
Big banks invest heavily in mobile apps and online banking platforms because they serve millions of customers. Their apps typically include mobile check deposit, bill pay, account transfers, and real-time notifications. Many offer two-factor authentication and fraud monitoring as standard features.
However, big bank technology can be inconsistent. A feature available in one bank's app may not be available in another's. Some big banks have older backend systems that limit what their apps can do, even though the customer-facing interface looks modern. Outages, though rare, can affect millions of customers at once.
Online-only banks and some regional banks often have simpler, faster-loading apps because they do not maintain legacy systems. They may offer features like when ready account opening or real-time spending alerts before big banks do. The trade-off is that they cannot offer in-branch services or the full range of products.
Deposit insurance and safety
All big banks are members of the Federal Deposit Insurance Corporation (FDIC). This means deposits up to $250,000 per depositor, per account type, per bank are insured against bank failure. This protection is the same whether you bank at JPMorgan Chase or a small community bank.
The size of a big bank does not make your deposits safer in terms of FDIC coverage. However, big banks are subject to more frequent regulatory examinations and stress tests, which means regulators monitor their financial health more closely. In theory, this reduces the risk of failure, though it does not eliminate it.
If you have more than $250,000 to deposit, you can spread money across multiple banks or multiple account types (checking, savings, money market) at the same bank to stay within FDIC limits. This strategy works the same way at big banks and small banks.
When a big bank makes sense for your account
A big bank account works well if you travel frequently or move often, because you can access branches and ATMs almost anywhere. It also makes sense if you want multiple products from one institution—a checking account, savings account, credit card, and investment account—and value the convenience of managing everything in one place.
Big banks are also useful if you need business banking services, because they have the infrastructure to handle payroll, merchant processing, and commercial lending. Small businesses often start at big banks for this reason, though they may find better rates and service at a business-focused regional bank as they grow.
A big bank account is less ideal if you want to minimize fees, prefer personalized service, or live in an area where a regional bank or credit union has better local presence. It is also less ideal if you carry a low balance and do not want to pay monthly maintenance fees.
Frequently Asked Questions
Is my money safer at a big bank than a small bank?
No. Both big and small banks are FDIC-insured up to $250,000 per account type. Your deposits are equally protected. Big banks undergo more frequent regulatory examinations, but this does not change the insurance protection you receive.
Do big banks offer better interest rates on savings accounts?
Usually not. Big banks typically offer lower interest rates on savings accounts than online banks or credit unions. A big bank savings account might earn 0.01% annual percentage yield, while an online bank might offer 4% or higher. Big banks prioritize lending and investment income over paying depositors.
Can I switch from a big bank to a smaller bank without losing my money?
Yes. You can open an account at a new bank and transfer money from your big bank account. The transfer usually takes three to five business days. You can keep your old account open until the transfer is complete, then close it. There is no risk to your deposits during this process.
What happens if a big bank fails?
The FDIC takes over the bank and either arranges a sale to another bank or pays out deposits up to $250,000 per account type. Your money is protected. The last major bank failure in the United States was in 2008, and FDIC insurance worked as designed.
Do big banks charge for wire transfers?
Yes. Outgoing domestic wire transfers typically cost $15 to $30 at big banks. Incoming wires are usually free. Some big banks waive wire fees for customers with high balances or premium account tiers. Online banks and credit unions often charge lower fees or none at all.