IDI banking refers to deposits held at an insured depository institution, meaning a bank or savings association whose deposits are protected by the Federal Deposit Insurance Corporation. That protection covers up to $250,000 per depositor, per insured bank, for each account ownership category, and it applies to both your original deposit and any interest it has earned. Because one person can hold deposits in several ownership categories at the same bank, the real protection often runs well above $250,000.
What Makes a Bank an Insured Depository Institution
Federal law defines an insured depository institution as any bank or savings association whose deposits are insured by the FDIC.1Office of the Law Revision Counsel. 12 USC 1813 – Definitions These institutions are chartered under state or federal law and must meet ongoing capital, liquidity, and management standards. The FDIC both insures deposits and supervises how insured banks operate.
Every FDIC-insured institution has to display an official sign, typically gold with black lettering, at each location where customers can make deposits.2eCFR. 12 CFR Part 328 – FDIC Official Signs, Advertisement of Membership That sign signals that the bank’s deposits are backed by the full faith and credit of the U.S. government through the Deposit Insurance Fund.
What FDIC Deposit Insurance Covers
FDIC insurance covers $250,000 per depositor, per FDIC-insured bank, for each account ownership category.3Federal Deposit Insurance Corporation. Understanding Deposit Insurance All of your deposits in the same ownership category at the same bank are added together for insurance purposes. A checking account and a savings account, both in your name alone at the same bank, count as one insured amount up to the limit.
The covered products are the familiar ones:
- Checking accounts
- Savings accounts, including passbook savings
- Money market deposit accounts
- Certificates of deposit
- Cashier’s checks and money orders issued by the bank
Coverage includes principal and accrued interest, as long as the combined total stays within the limit.3Federal Deposit Insurance Corporation. Understanding Deposit Insurance
How Ownership Categories Expand Your Coverage
The practical power of FDIC insurance lives in ownership categories. Each category gets its own $250,000 limit at each bank, so one person with deposits across multiple categories at a single institution can be fully insured for far more than $250,000.
Single and Joint Accounts
A single account is one you own alone with no beneficiaries named. A checking account and a CD, both in your name only at the same bank, share one $250,000 limit between them.
Joint accounts are treated separately. Each co-owner’s share of every joint account at the same bank is added together and insured up to $250,000.4Federal Deposit Insurance Corporation. Your Insured Deposits A married couple with joint checking and joint savings at one bank is covered up to $500,000 on those joint accounts, with each spouse insured for another $250,000 in a separate single account at the same bank.
Trust Accounts
As of April 2024, the FDIC combined revocable trusts, irrevocable trusts, and informal payable-on-death and in-trust-for accounts into a single trust accounts category. Coverage is calculated at $250,000 per owner, per eligible beneficiary, up to a maximum of five beneficiaries.5Federal Deposit Insurance Corporation. Financial Institution Employees Guide to Deposit Insurance – Trust Accounts An eligible beneficiary is any living person or IRS-recognized charity. A single trust owner with five named beneficiaries at one bank reaches $1,250,000 in coverage; adding a sixth name does not increase it.4Federal Deposit Insurance Corporation. Your Insured Deposits
Retirement Accounts
Certain retirement accounts, including Individual Retirement Accounts, receive their own $250,000 limit, separate from your single or joint account coverage.3Federal Deposit Insurance Corporation. Understanding Deposit Insurance Someone with $200,000 in a personal checking account and $200,000 in an IRA CD at the same bank is fully insured on both, because the balances sit in different categories.
Business and Organization Accounts
Deposits owned by a corporation, partnership, LLC, or unincorporated association are insured up to $250,000 as a separate category, provided the entity has a legitimate business purpose and was not formed solely to increase insurance coverage.6Federal Deposit Insurance Corporation. Corporation, Partnership and Unincorporated Association Accounts The FDIC calls this the independent activity requirement. Business deposits are insured separately from the owners’ personal deposits. If the FDIC concludes the entity exists only to inflate coverage, it will treat the balance as belonging to the individuals who control it.
What FDIC Insurance Does Not Cover
The FDIC insures deposits, not investments. A product sold through the same bank that holds your checking account may carry no FDIC protection at all.7Federal Deposit Insurance Corporation. Financial Products That Are Not Insured by the FDIC Products outside the coverage include:
- Stocks, bonds, and mutual funds
- Annuities and life insurance policies
- Crypto assets
- U.S. Treasury securities, which carry their own government backing but not through the FDIC
- Safe deposit box contents
Credit unions are not IDIs. Their deposits are insured by the National Credit Union Administration through the National Credit Union Share Insurance Fund, which is also backed by the full faith and credit of the United States.8National Credit Union Administration. Share Insurance Coverage The coverage limit mirrors FDIC rules, but the two systems are legally distinct.
Fintech Apps and Pass-Through Insurance
Many fintech apps and online platforms advertise that deposits are FDIC-insured. The distinction between holding an account directly at an insured bank and holding money through an intermediary matters more than the marketing suggests. When the fintech itself is not a bank, your funds usually sit in pooled accounts at a partner bank, and the FDIC extends coverage to the underlying customers only if specific pass-through requirements are met.
For pass-through insurance to apply, three conditions must all be satisfied at the time a bank fails:9Federal Deposit Insurance Corporation. Pass-Through Deposit Insurance Coverage
- The funds must actually belong to the individual customers, not to the third-party company placing them.
- The bank’s records must show the account is held on behalf of others, for example “XYZ Company as Custodian for customers.”
- Records kept by the bank, the fintech, or another party in the normal course of business must identify each customer and that customer’s ownership interest.
When any link in that chain breaks, depositors can lose access to their money for months or longer. The 2024 collapse of Synapse Financial Technologies showed how. Synapse handled the customer-level accounting for several fintech apps, routing pooled funds into partner banks. When Synapse filed for bankruptcy, no one could reconcile which dollars belonged to which customers, and more than 100,000 people lost access to over $265 million. Many had been told their deposits were FDIC-insured. The partner banks were insured; the records needed to prove each customer’s ownership share were either incomplete or contradictory.
Before putting significant money on a fintech platform, confirm which FDIC-insured bank actually holds the funds and ask how your individual ownership is documented in that bank’s records. If the platform cannot answer clearly, pass-through protection may not be there when you need it.
What Happens When an IDI Fails
When a bank becomes insolvent, the FDIC is typically appointed as receiver, takes over the institution’s assets and operations, and resolves the failure.10Office of the Law Revision Counsel. 12 USC 1821 – Insurance Funds Federal regulation requires the FDIC to use the resolution method least costly to the Deposit Insurance Fund.11eCFR. 12 CFR 360.1 – Least-Cost Resolution
Most of the time, a healthy bank agrees to assume the failed institution’s insured deposits and buy some of its assets. In that scenario, your accounts simply move to the new bank and keep working. When no buyer is found, the FDIC pays insured depositors directly, with a goal of getting insured funds into their hands within two business days of the closing.12Federal Deposit Insurance Corporation. Payment to Depositors
Any balance above $250,000 in a single ownership category follows a longer and less certain path. By law, uninsured depositors are paid after fully insured depositors but before general creditors and stockholders. Payments on the uninsured portion, called dividends, depend on what the FDIC recovers as it liquidates the failed bank’s assets, and those payments can stretch over several years.13Federal Deposit Insurance Corporation. Priority of Payments and Timing General creditors and stockholders usually recover little or nothing. Keeping deposits within insured limits is the only way to guarantee full and prompt repayment.
How to Verify a Bank Is an IDI
The FDIC maintains BankFind, a free search tool where you can look up any institution by name, FDIC certificate number, or website address.14Federal Deposit Insurance Corporation. BankFind Suite – Find Insured Banks The database covers every FDIC-insured institution from 1934 forward. If a bank does not appear in BankFind, its deposits are not FDIC-insured.
At physical branches, look for the official FDIC sign at teller windows and in deposit-taking areas. Online-only banks and fintech platforms deserve closer scrutiny. Confirm which FDIC-insured bank holds your funds and verify that bank’s status in BankFind. The name on the app is often not the name of the insured institution behind it.
For a full picture of your own coverage, the FDIC offers a free online tool called the Electronic Deposit Insurance Estimator, which calculates coverage at a specific bank across all ownership categories, including personal, business, government, and trust accounts.15Federal Deposit Insurance Corporation. Electronic Deposit Insurance Estimator (EDIE) Running your deposits through it before reorganizing accounts can surface gaps that are easy to miss.