- ✦FDIC insurance is $250,000 per depositor, per bank, per ownership category, so the way to insure a large balance is to multiply across those three dimensions, not to hope one bank covers it all.
- ✦A couple can insure $1,000,000 at a single bank: $250,000 each in two single accounts plus $500,000 in a joint account. Spread across banks or a sweep network, the ceiling is effectively unlimited.
- ✦The same balance left at one big bank is often both uninsured above $250,000 and earning the 0.40% national average. Structuring it across high-yield banks insures every dollar and closes the gap to the top rate.
There is a quiet assumption behind a large cash balance sitting at one big bank: that it is safe because the bank is big. FDIC insurance does not work that way. Coverage is capped at 250,000 per depositor, per insured bank, per ownership category, and the size of the bank does not change that number. A $500,000 balance in one account is insured for less than half of itself. Savings rates on this page were last verified recently.
The fix is mechanical, and it solves a second problem at the same time. The banks that make it easy to insure a large balance, by being one of several you spread across, are mostly the online banks paying the top rates. So the structuring that protects the money also stops it from earning the 0.40% national average.
The three levers that extend coverage
FDIC coverage multiplies along three independent dimensions. Use any one, or combine them.
Multiple banks. The limit is per insured bank. $250,000 at each of three banks is $750,000 in full coverage. This is the simplest lever and the one that also captures the best rates, because you can place each slice at a top-paying bank.
Ownership categories at one bank. At a single bank, these categories are each insured separately:
| Ownership category | Coverage at one bank |
|---|---|
| Single account | $250,000 |
| Joint account | $250,000 per co-owner ($500,000 for two) |
| Revocable trust / payable-on-death | $250,000 per beneficiary |
| Retirement (IRA) | $250,000 |
A married couple can therefore insure $1,000,000 at one bank: $250,000 in each person's single account plus $500,000 in a joint account. Add beneficiaries on a payable-on-death account and the figure climbs further.
Deposit sweep networks. Services such as IntraFi ICS take one deposit and spread it across a network of banks behind the scenes, so a single account can carry FDIC coverage in the millions. You deal with one institution; the network handles the placement.
The number most large balances are quietly losing
Coverage is only half the story. The contrast that costs real money is rate, not safety. The national average savings yield is 0.38%, and big banks pay around there or less. The best high-yield accounts pay 4.40% APY.
On $500,000, that spread is the loyalty tax at scale. Run the live figure on the Bank Gap Index: the gap between the national average and the top rate, applied to half a million dollars, is a five-figure annual number. The structuring work to insure that balance is identical whether it earns 0.40% or the top rate. The only difference is which banks you choose, so choose the ones that pay.
A worked structure for $500,000
One clean way to insure $500,000 in full while earning the top rate, using two people:
- Bank A (top rate): $250,000 in a single account for person one.
- Bank B (top rate): $250,000 in a single account for person two.
Every dollar insured, every dollar at the best available rate. A solo saver uses the same idea across three banks, or two banks plus a payable-on-death beneficiary. If you would rather hold it in one place, a sweep network does the spreading for you. Confirm each bank's FDIC status first on the FDIC checker, and compare the top-paying insured banks on the live savings page.
Quick answers
How do I insure more than $250,000? Spread across multiple insured banks, use separate ownership categories (single, joint, trust, retirement) at one bank, or use a sweep network like IntraFi ICS. The $250,000 limit is per bank and per category, so each one you add is fresh coverage.
Is a joint account insured for $500,000? Yes, $250,000 per co-owner, so two owners get $500,000 at a single bank, on top of each owner's separate single-account coverage.
Will spreading my cash cut my interest? No. The top-paying banks are mostly online, so spreading a large balance across them insures it in full and earns the best available rate.
Methodology
FDIC coverage rules follow the FDIC deposit insurance documentation and its per-depositor, per-bank, per-ownership-category structure. SwitchWize tracks APYs daily from bank websites and regulatory filings, cross-referenced against FDIC national rate data. Dollar figures are illustrative and rounded; verify each institution's FDIC status before moving funds. This is educational information, not personalized financial advice.
Frequently Asked Questions
How do I insure more than $250,000 with the FDIC?
Is a joint account insured for $500,000?
Does spreading my cash across banks lower my interest?
Are online banks as safe as big banks for large balances?
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