The largest banks in the US by assets

The Big Four banks — JPMorgan Chase, Bank of America, Wells Fargo, and Citigroup — hold roughly half of all US bank deposits. JPMorgan Chase is the largest by assets, with over $3.7 trillion. Bank of America follows with roughly $3.0 trillion. These numbers shift slightly each quarter as markets move and banks acquire or divest business lines, but the order has remained stable for years.

After the Big Four come regional and national banks like US Bancorp, Truist Financial, PNC Financial Services, and Goldman Sachs. Each operates differently: some focus on retail customers, others on wealth management or commercial lending. The size matters because it affects what services you can access, how many branches exist near you, and what happens if the bank fails.

Key Takeaways

  • JPMorgan Chase, Bank of America, Wells Fargo, and Citigroup are the four largest US banks by total assets, and together they control roughly half of all deposits in the country.
  • Bank size determines branch availability, product range, and customer service options — larger banks have more locations and digital tools, but smaller regional banks often offer more personalized service.
  • The Federal Deposit Insurance Corporation (FDIC) insures deposits up to $250,000 per account holder per bank, regardless of the bank's size.
  • Large banks generate revenue from deposits, loans, investment services, and fees; understanding their business model helps explain why they charge what they do.
  • Mergers and acquisitions regularly reshape the banking landscape, so the list of largest banks changes over time as institutions combine or sell divisions.

How the Big Four make money

Large banks earn revenue from several sources. The primary one is the spread — the difference between the interest rate they pay depositors and the rate they charge borrowers. If a bank pays you 0.01% on savings but charges 6% on a mortgage, that gap is profit.

They also earn from fees: overdraft fees, wire transfer fees, account maintenance fees, and ATM fees. Investment banking and wealth management divisions generate commissions on trades, asset management, and advisory services. Credit card networks (Visa, Mastercard) pay banks a percentage of every transaction. For large banks, these revenue streams add up to tens of billions per year.

The business model explains why large banks can afford thousands of branches and 24/7 customer service — they have the scale to spread costs across millions of customers. It also explains why they charge fees that smaller banks sometimes do not: they are funding a much larger operation.

What separates the Big Four from regional banks

Size brings advantages and trade-offs. JPMorgan Chase, Bank of America, Wells Fargo, and Citigroup have branches in nearly every state, mobile apps with advanced features, and the ability to offer complex products like derivatives and structured investments. They also have the resources to invest in fraud detection and cybersecurity at scale.

Regional banks like Truist or US Bancorp operate in fewer states but often know their local markets better. They may offer lower fees, more flexible lending standards for small business, or more attentive customer service because they have fewer customers per employee. The trade-off is fewer locations, fewer digital features, and less ability to weather a financial crisis without outside help.

For most people, the choice comes down to convenience and trust. If you want a branch on every corner and a mobile app that does everything, a Big Four bank delivers. If you prefer a relationship with a local institution and do not mind fewer locations, a regional bank may suit you better.

How bank failures affect your money

The FDIC insures deposits up to $250,000 per depositor per bank. This means if JPMorgan Chase failed tomorrow, the FDIC would cover your checking account, savings account, and money market account up to $250,000 combined. Anything above that is at risk.

Large banks are less likely to fail because regulators scrutinize them heavily and they have more capital to absorb losses. The Federal Reserve requires the Big Four to maintain higher capital ratios than smaller banks and to pass annual stress tests that simulate economic downturns. But size is not a may provide — Washington Mutual was the largest bank failure in US history when it collapsed in 2008.

If you have more than $250,000 at one bank, you can protect the excess by opening accounts at different banks (each gets its own $250,000 coverage) or by using different account categories at the same bank — a joint account, a trust account, and a retirement account each get separate coverage.

The role of the Federal Reserve

The Federal Reserve does not own the Big Four banks, but it regulates them and sets the interest rate that banks charge each other for overnight loans. This federal funds rate influences the rates banks offer to customers. When the Fed raises rates, banks raise the interest they charge on mortgages and credit cards. When the Fed cuts rates, banks lower those rates too.

The Fed also sets reserve requirements (how much cash banks must hold) and conducts stress tests to may support large banks can survive a severe recession. During the 2008 financial crisis, the Fed lent directly to banks to prevent collapse. This regulatory relationship is why large bank executives testify before Congress and why Fed policy decisions affect your mortgage rate.

Mergers that created today's largest banks

The Big Four did not always exist in their current form. JPMorgan Chase was created in 2000 when JPMorgan merged with Chase Manhattan Bank. Bank of America acquired NationsBank in 1998 and later bought Merrill Lynch and Countrywide Financial. Wells Fargo acquired Wachovia in 2008 during the financial crisis. Citigroup was formed in 1998 when Citicorp merged with Travelers Group.

These mergers concentrated banking power in fewer hands. Before 1998, the US had thousands of independent banks. Today, the top 10 banks control roughly 70% of all deposits. Regulators have become more cautious about approving new mega-mergers, but consolidation continues at smaller scales — regional banks regularly acquire community banks, and the largest banks buy specialized divisions from competitors.

How to choose a bank for your needs

If you want nationwide access and advanced digital tools, a Big Four bank makes sense. JPMorgan Chase has the most ATMs and branches. Bank of America has strong mobile banking. Wells Fargo and Citigroup offer similar services. All four have checking accounts with no monthly fees if you meet minimum balance or direct deposit requirements.

If you want lower fees and more personal service, look at regional banks in your area. Credit unions (member-owned, not-for-profit institutions) often charge fewer fees and offer better rates on savings accounts and loans, though they have fewer locations. Online banks like Ally or Marcus have no physical branches but offer high savings rates and low fees because they have no branch overhead.

The right choice depends on whether you value convenience, cost, service, or a combination. No single bank is best for everyone — it depends on how you use banking services and what matters most to you.

Frequently Asked Questions

Is my money safe at a big bank?

Yes, up to $250,000 per account category through FDIC insurance. Large banks are also heavily regulated and stress-tested by the Federal Reserve, making failure unlikely. If you have more than $250,000, spread it across multiple banks or account types to maintain full coverage.

Why do big banks charge so many fees?

Large banks have higher operating costs — thousands of branches, millions of employees, and expensive technology systems. They spread these costs across customers through fees. Regional banks and online banks often charge fewer fees because they have lower overhead.

Can I switch banks without losing my money?

Yes. You can open an account at a new bank and transfer money from your old account. Most banks offer a transfer service that moves funds automatically. Your old account stays open until you close it, so nothing is lost in the switch.

Do all big banks offer the same products?

No. JPMorgan Chase and Citigroup have stronger investment banking and wealth management divisions. Bank of America and Wells Fargo focus more on retail banking. All four offer checking, savings, mortgages, and credit cards, but the features and rates vary.

What happens to my accounts if a big bank is acquired?

Your accounts transfer to the acquiring bank. The FDIC insures deposits during the transition, and you keep the same account number and access. The acquiring bank may change fees or features, but your money remains protected.