There is no federal law that limits how much you can have in a bank account. You can hold $500 or $50 million and the deposit itself breaks no rules. What does matter, once your balance grows, are four separate systems that treat larger sums differently: federal deposit insurance stops at $250,000 per depositor per bank, some government benefit programs cut you off if your balance climbs past a low threshold, cash deposits above $10,000 trigger automatic reporting, and every dollar of interest is taxable. Knowing where those lines sit is the practical answer to how much you can keep in an account without running into trouble.
The $250,000 Insurance Ceiling
The most important practical limit on a single account is insurance. The Federal Deposit Insurance Corporation covers deposits at banks up to $250,000 per depositor, per insured institution, for each ownership category.1FDIC.gov. Deposit Insurance FAQs The National Credit Union Administration provides the same $250,000 coverage at credit unions.2National Credit Union Administration. Share Insurance Coverage Money above the limit is uninsured. If the bank fails, any dollar past $250,000 in a covered category can be lost.
The phrase “per ownership category” is where coverage stretches. The FDIC recognizes single accounts, joint accounts, revocable trust accounts, certain retirement accounts, and business accounts as distinct categories, and each one gets its own $250,000 at the same bank. A joint account with two co-owners is insured up to $250,000 per owner, so a married couple sharing one joint account has $500,000 of coverage on that account alone.1FDIC.gov. Deposit Insurance FAQs
Trust Accounts
Revocable trust accounts offer another layer. The FDIC insures each trust owner up to $250,000 per eligible beneficiary named in the trust, capped at $1,250,000 per owner when five or more beneficiaries are named. A married couple who each name five beneficiaries in their revocable trust could insure up to $2,500,000 at a single institution through trust accounts alone. The FDIC combines an owner’s informal revocable, formal revocable, and irrevocable trusts at the same bank when it runs the calculation.3FDIC.gov. Trust Accounts
Keeping Large Balances Insured
The simplest way to hold more than $250,000 with full insurance is to spread deposits across multiple FDIC-insured banks so no single institution holds more than the covered limit. Some depositors use account networks that automatically distribute large deposits across participating banks to keep each portion under $250,000. A few state-chartered credit unions offer private excess deposit insurance above the federal limit, but that coverage is not backed by the U.S. government, so the terms matter.
Benefit Programs That Cap Your Balance
For anyone receiving Supplemental Security Income, the bank balance question is not academic. The Social Security Administration limits countable resources to $2,000 for an individual and $3,000 for a couple.4Social Security Administration. Who Can Get SSI Countable resources include cash and money in checking or savings accounts. Those limits have not been adjusted since 1989 and remain unchanged for 2026.
Going even slightly over the limit can suspend benefits. If a balance pushes past $2,000, the recipient generally needs to spend down the excess on approved expenses before payments resume. Some assets are excluded from the count: the home, one vehicle per household, most personal belongings, and property that cannot be sold.5Social Security Administration. Exceptions to SSI Income and Resource Limits
ABLE Accounts
An ABLE (Achieving a Better Life Experience) account is the main exception. Up to $100,000 held in an ABLE account does not count toward the SSI $2,000 resource limit.6Social Security Administration. SI 01130.740 – Achieving a Better Life Experience (ABLE) Accounts Only the balance above $100,000 counts as a resource. As of January 2026, eligibility expanded under the ABLE Age Adjustment Act to cover individuals whose qualifying disability began before age 46. For SSI recipients, ABLE accounts are one of the few ways to accumulate meaningful savings without losing benefits.
Medicaid
Medicaid eligibility depends on how you qualify. For most people under 65, Medicaid uses income-based rules with no asset test. For individuals 65 and older, or those qualifying through a disability, Medicaid generally follows SSI-style resource counting. Anyone applying for Medicaid coverage of long-term care faces an added rule: transferring assets for less than fair market value during the five years before the application can result in a penalty period where long-term care coverage is denied.7Medicaid.gov. Eligibility Policy Giving savings to a relative to qualify for nursing home coverage does not work if it happened within that five-year window.
Cash Deposits Over $10,000
Under the Bank Secrecy Act, any deposit or withdrawal of more than $10,000 in physical currency in a single day requires the bank to file a Currency Transaction Report with the Financial Crimes Enforcement Network.8Office of the Law Revision Counsel. 31 USC 5313 – Reports on Domestic Coins and Currency Transactions The report includes the customer’s name, Social Security number, address, the transaction amount, and the account number. The bank verifies identity through a government-issued photo ID and files the CTR through the BSA E-Filing System by the 15th calendar day after the transaction.9Financial Crimes Enforcement Network. FinCEN Currency Transaction Report Electronic Filing Requirements
A CTR is a routine administrative filing, not an accusation of wrongdoing. Banks process thousands of them. Unlike a Suspicious Activity Report, there is no prohibition on the bank telling you a CTR was filed.
The $10,000 threshold applies only to physical currency. Wire transfers, checks, and electronic transfers do not trigger a CTR, though they are subject to separate recordkeeping rules. Wire transfers of $3,000 or more fall under FinCEN’s Travel Rule, which requires the sending institution to pass identifying information about the sender to the receiving institution.10Financial Crimes Enforcement Network. FinCEN Advisory – Funds Travel Regulations Questions and Answers
Structuring Is a Separate Crime
Breaking a large sum into smaller deposits to avoid the CTR is called structuring, and it is a federal crime whether or not the money itself is legitimate.11Office of the Law Revision Counsel. 31 USC 5324 – Structuring Transactions to Evade Reporting Requirement Prohibited A restaurant owner who deposits $9,500 in cash every Monday instead of making a single larger deposit can face criminal charges for the deposit pattern alone.
A structuring conviction carries up to five years in prison and fines. If the structuring is tied to other illegal activity or involves more than $100,000 over a 12-month period, the maximum doubles to ten years.11Office of the Law Revision Counsel. 31 USC 5324 – Structuring Transactions to Evade Reporting Requirement Prohibited Under 31 U.S.C. ยง 5317, the government can seize the funds through civil forfeiture without needing a criminal conviction. Banks watch for these patterns and may file a Suspicious Activity Report with FinCEN if a series of transactions near $10,000 looks like avoidance.12Financial Crimes Enforcement Network. Frequently Asked Questions Regarding Suspicious Activity Reporting Requirements Unlike a CTR, the bank is legally prohibited from telling you a SAR has been filed. The safe approach with regular cash income is to deposit it normally and let the bank file whatever the law requires.
Money Held in Foreign Accounts
Balances in foreign bank accounts follow their own rules. Any U.S. person whose foreign financial accounts exceed $10,000 in aggregate value at any point during the year must file a Report of Foreign Bank and Financial Accounts (FBAR) with FinCEN by April 15 of the following year.13Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR) The $10,000 figure is the combined total across all foreign accounts, not a per-account amount. Three accounts of $4,000 each cross the line.
A non-willful failure to file carries a civil penalty of up to $10,000 per violation. A willful failure can cost 50% of the highest balance in the unreported account, or $100,000 (adjusted for inflation), whichever is greater. Courts have held that reckless disregard, not only deliberate evasion, can meet the willfulness standard.
The IRS separately requires Form 8938 when foreign financial assets pass certain thresholds that depend on filing status and where you live. An unmarried taxpayer in the U.S. hits the trigger at $50,000 on the last day of the year or $75,000 at any point during it; married joint filers get double, and taxpayers living abroad get much higher figures.14Internal Revenue Service. Do I Need to File Form 8938, Statement of Specified Foreign Financial Assets Form 8938 goes with the tax return; the FBAR is filed separately through FinCEN.
Interest Is Taxable Every Year
Every dollar of interest a bank account earns is taxable income in the year it becomes available, whether or not you withdraw it.15Internal Revenue Service. Topic No. 403 – Interest Received Interest from savings, checking, money market accounts, and certificates of deposit is treated as ordinary income and taxed at your regular federal rate. With high-yield savings accounts currently paying 4% or more, the tax bill on a large balance can be substantial. A $250,000 balance earning 4.5% generates over $11,000 in taxable interest per year.
Your bank sends a Form 1099-INT if it pays $10 or more in interest during the year.16Internal Revenue Service. About Form 1099-INT, Interest Income Taxes are owed on all interest even without a 1099-INT. Something that catches people off guard: if the bank does not have a valid Taxpayer Identification Number on file, it must withhold 24% of interest payments under backup withholding rules and send it to the IRS.17Internal Revenue Service. Backup Withholding The withheld amount is credited on the tax return, but it ties the money up in the meantime.
If You Leave the Account Alone Too Long
Money left in a bank account without activity long enough can be claimed by the state. Every state has an unclaimed property law that requires banks to turn over dormant account balances to the state treasury after a set period of inactivity, typically three to five years depending on the state and account type. This process is called escheatment, and the trend has been toward shorter dormancy periods, with many states moving to three years.
Before escheating funds, the bank is generally required to send notice to the last known address. If no response comes, the money goes to the state. It can still be claimed afterward through state unclaimed property databases, but the process takes time. The simplest prevention is a single transaction or contact with the bank inside the state’s dormancy window. Logging into online banking or updating contact information may count as activity, depending on the state.