Millionaires protect their money in banks by layering several tools at once: they stack FDIC ownership categories at a single bank, spread cash across dozens of institutions through deposit placement networks and brokerage sweeps, and hold the largest balances as Treasury securities in custodial accounts that never sit on the bank’s balance sheet. The federal insurance limit is $250,000 per depositor, per insured bank, which is a rounding error against a seven- or eight-figure cash position. Everything below is about closing that gap.
Stacking FDIC Ownership Categories at One Bank
FDIC insurance is not a flat cap per person. Coverage is calculated separately for each “ownership category” you hold at a bank, and deposits in different categories are insured separately from one another.1eCFR. 12 CFR Part 330 – Deposit Insurance Coverage Single-ownership accounts, joint accounts, retirement accounts, and trust accounts each carry their own $250,000 limit.
A married couple can stack these quickly. Each spouse’s individual account is insured to $250,000. A joint account gets separate treatment, with each co-owner insured for $250,000, so joint coverage totals $500,000.1eCFR. 12 CFR Part 330 – Deposit Insurance Coverage That puts the couple at $1 million fully insured at one bank before trusts enter the picture. Each spouse’s IRA adds another $250,000.
Titling has to be exact. If account documents don’t clearly identify the ownership structure and beneficiaries, the FDIC may lump funds into a single category during a failure, leaving anything above $250,000 uninsured. Sloppy paperwork costs real money in a receivership.
Trust Accounts and the $1.25 Million Ceiling
Trust accounts are the single most powerful multiplier, and the rules were reset in April 2024. Trust deposits are insured at $250,000 per owner, per beneficiary, up to a maximum of five beneficiaries, which caps each trust owner’s coverage at $1,250,000 regardless of how many beneficiaries the trust actually names.2FDIC. Trust Accounts An owner naming seven beneficiaries gets the same coverage as one naming five.
Work an example. A married couple with three children as beneficiaries gets $250,000 × 3 = $750,000 per spouse in trust coverage, or $1.5 million across the two trust owners. Add two individual accounts ($500,000) and a joint account ($500,000), and the couple has $2.5 million fully insured at one bank.3eCFR. 12 CFR 330.10 – Trust Accounts
One trap: the FDIC now aggregates all trust deposits from the same owner to the same beneficiaries, whether the account is a payable-on-death, an informal trust, or a formal revocable trust.3eCFR. 12 CFR 330.10 – Trust Accounts Naming the same child on both a POD account and a living trust does not double coverage. It’s one bucket.
Deposit Placement Networks: ICS and CDARS
When cash blows past what account titling can cover, deposit placement networks handle the overflow. The two dominant services, Insured Cash Sweep (ICS) and the Certificate of Deposit Account Registry Service (CDARS), are run by IntraFi Network. Your bank takes a large deposit, breaks it into pieces under $250,000, and places each piece into a deposit account at another bank in the network. Each piece qualifies for its own FDIC insurance at the receiving institution.4IntraFi. ICS and CDARS
A depositor with $10 million could see that cash distributed across forty or more network banks, each holding just under the limit. You still deal only with your primary bank: one relationship, one statement, one point of access. ICS handles demand deposits and money market accounts. CDARS handles CDs.
Brokerage Cash Sweep Programs
Major brokerage firms use a similar mechanism for uninvested cash in investment accounts. The firm automatically sweeps cash into interest-bearing deposit accounts at a roster of partner banks, each covered by FDIC insurance to $250,000. A program using twenty partner banks can theoretically provide up to $5 million in FDIC coverage for a single client’s cash balance, though the actual amount depends on how many banks participate and whether you already hold deposits at any of them.
You see one cash balance in the brokerage account, but the money is legally sitting at multiple banks. If a program bank fails, FDIC insurance covers the portion held there. If the brokerage itself fails, a separate protection layer applies: the Securities Investor Protection Corporation covers assets held at the brokerage up to $500,000, including a $250,000 sublimit for cash.5SIPC. What SIPC Protects SIPC does not cover market losses, and it applies only to member firms. Many large brokerages carry additional excess coverage, often through Lloyd’s of London, that extends protection beyond SIPC limits.
Money market mutual funds held at the brokerage are treated as securities under SIPC, not as cash, so they count against the $500,000 securities limit rather than the $250,000 cash sublimit.6Investor.gov. Securities Investor Protection Corporation (SIPC)
Holding Assets Off the Bank’s Balance Sheet
Private banking divisions take a different route for the largest clients. Rather than parking $20 million in deposit accounts, a private bank may buy Treasury bills, government money market funds, or other short-term instruments on the client’s behalf. These assets sit in custodial accounts in the client’s own name, so they never become part of the bank’s balance sheet.
The distinction matters if the bank fails. Assets held in custody belong to the client, not to the bank’s estate, so they are not available to pay the bank’s creditors. Treasury bills carry the full backing of the U.S. government, so principal protection is effectively unlimited.7TreasuryDirect. Treasury Bills There is no $250,000 cap here because this is not deposit insurance. A client holding $50 million in T-bills through a custodial arrangement does not need FDIC coverage for those funds at all.
Treasury bills sold before maturity can lose small amounts of principal when rates rise, but with maturities of four to fifty-two weeks the risk is negligible for cash management purposes. The point is that custodial assets are insulated from institutional failure in a way that deposit accounts, no matter how carefully titled, are not.
What Uninsured Balances Actually Cost
The precautions above exist because the alternative is ugly. When the FDIC closes a bank, insured deposits are typically available within a few business days, often by the next business day through an acquiring institution. Uninsured deposits follow a different path: the depositor files a claim against the receivership and waits for the bank’s assets to be liquidated. That process has taken about five years on average.8FDIC. Understanding the Components of Bank Failure Resolution Costs
Recovery rates also vary. FDIC research covering failures from 1986 through 2007 found uninsured claimants recovered roughly 47 to 68 cents on the dollar, depending on how the failure was resolved.8FDIC. Understanding the Components of Bank Failure Resolution Costs Losing 30 to 50 percent of a large uninsured balance, potentially locked up for years, is the scenario every strategy above is built to avoid.
One Rule Not to Get Wrong
Moving large sums also triggers federal reporting. Any cash transaction over $10,000, deposit or withdrawal, requires the bank to file a Currency Transaction Report with FinCEN, and multiple same-day transactions that together exceed $10,000 trigger a report as well.9FinCEN. Notice to Customers – A CTR Reference Guide
Breaking up deposits into smaller amounts to stay under the threshold is called structuring, and it is a federal crime regardless of whether the underlying money is legitimate.9FinCEN. Notice to Customers – A CTR Reference Guide Wealthy depositors treat CTR filings as routine paperwork rather than something to work around.