Yes, you can put $1 million in a CD, and banks accept deposits this size routinely — but federal deposit insurance only covers $250,000 per depositor at any one bank, so the entire planning problem is making sure the other $750,000 isn’t sitting unprotected if the bank fails. A CD with a minimum deposit of $100,000 or more is generally called a jumbo CD, and most large commercial banks and credit unions handle seven-figure deposits through private banking teams that negotiate custom rates above whatever is posted online.
What a Jumbo CD Actually Buys You
At the million-dollar level, the posted jumbo CD rate is usually a starting point, not a final offer. Private banking teams at larger institutions regularly negotiate tiered rates that aren’t advertised publicly. Comparing offers from three or four banks is worth the time: on a million dollars, a quarter-point difference is thousands of dollars a year.
Institutional caps on a single certificate vary, but seven-figure sums are widely accommodated. The real differences between banks at this level are the rate, the term flexibility, and how the account is serviced. None of that changes the central constraint, which is the insurance ceiling.
The $250,000 Insurance Ceiling
The Federal Deposit Insurance Corporation insures deposits up to $250,000 per depositor, per insured bank, for each ownership category.1Office of the Law Revision Counsel. 12 U.S. Code 1821 – Insurance Funds A single person holding one million dollars in one standard CD at one bank has only $250,000 protected. The remaining $750,000 becomes an unsecured claim against the failed institution, and recovering it can take months or years with no guarantee of the full amount.
Credit unions provide parallel coverage through the National Credit Union Share Insurance Fund under the same $250,000 per-owner, per-institution, per-category structure, so the strategies below apply either way.
Split Across Four Banks
The simplest approach is four deposits of $250,000 at four separate FDIC-insured banks. Every dollar is covered. The cost is managing four accounts, four maturity dates, and four sets of renewal paperwork.
Use Multiple Ownership Categories at One Bank
Because FDIC coverage applies separately to each ownership category, you can stack coverage at a single institution.1Office of the Law Revision Counsel. 12 U.S. Code 1821 – Insurance Funds A joint account held by two people carries $250,000 per co-owner, for $500,000 total. Payable-on-death beneficiaries add $250,000 of coverage per named beneficiary, so a single-owner CD with four named beneficiaries can cover the full million at one bank. Beneficiaries have to be specifically named in the bank’s records; vague designations don’t qualify.
Let CDARS Do the Spreading
The Certificate of Deposit Account Registry Service handles the splitting automatically. You deposit the full million at one participating bank, and the service breaks it into increments below $250,000 and distributes them across member banks. You get one bank relationship, one statement, and full FDIC coverage on the whole balance. Many banks in the network accept deposits up to $25 million or more through this system.
Laddering a Million-Dollar Balance
Locking a million dollars into one CD with one maturity date concentrates two risks: if rates rise during the term, your money is stuck earning the old rate, and getting out early triggers a penalty. A ladder spreads the balance across staggered maturities — for example, $200,000 each in one-, two-, three-, four-, and five-year terms.
As each rung matures, you reinvest at current rates or take the cash. You keep regular access to portions of the money without penalty, and over time the whole balance rotates into the longest, typically highest-rate terms. Laddering also makes it easier to keep each individual CD inside the $250,000 insurance limit at separate institutions.
The Tax Bill You’ll Actually Owe
CD interest is taxed as ordinary income at the federal level, at the same rates as wages. On a million-dollar CD earning 4% to 5%, that’s $40,000 to $50,000 in interest added to your return each year, which can push you into a higher bracket or trigger the net investment income tax. The bank reports any interest of $10 or more to the IRS on Form 1099-INT, so the IRS has the number before you file.2Internal Revenue Service. About Form 1099-INT, Interest Income
Here’s the detail that catches people: CD interest is taxable in the year it accrues, not the year the CD matures. If you lock a million into a five-year CD, you owe tax on each year’s interest as it accumulates, even though you can’t touch the money without paying a penalty. Plan for that cash flow mismatch.
Most states also tax CD interest. U.S. Treasury securities are exempt from state income tax, so for someone in a high-tax state, a Treasury yielding slightly less than a CD can produce a higher after-tax return. Compare after-tax yields, not headline rates. In a tax-sheltered account like an IRA or 401(k), this difference disappears because earnings aren’t taxed until withdrawal.
Early Withdrawal Penalties Scale With the Balance
Pulling money out of a CD before maturity triggers a penalty, and on a million dollars it can be substantial. Banks typically charge a set number of months’ interest — commonly three to six months for shorter terms, six to twelve for longer ones. Some charge a percentage of total expected interest over the full term. In some cases, the penalty exceeds the interest earned and eats into principal.
No federal law standardizes these penalties, so they vary widely. The penalty structure is one of the most important terms to compare before you deposit. A bank with a slightly lower rate and a gentler penalty may be the better choice if there’s any chance you’ll need the cash early. The terms are in the deposit agreement and are almost always non-negotiable after you sign.
One consolation: early withdrawal penalties are deductible on your federal return as an adjustment to income, so you can claim them even if you don’t itemize.
What the Bank Will Ask For
Opening a million-dollar CD takes more paperwork than a standard account. Federal rules require banks to collect your name, date of birth, address, and identification number under their Customer Identification Program.3eCFR. 31 CFR 1020.220 – Customer Identification Program Requirements for Banks Bring a government-issued photo ID and your Social Security or Taxpayer Identification Number.
Expect questions about where the money came from. Bank Secrecy Act and anti-money laundering rules require banks to understand the nature and purpose of customer relationships, and a seven-figure deposit will trigger that review.4Federal Register. Customer Due Diligence Requirements for Financial Institutions Have documentation ready: a property sale closing statement, an inheritance distribution letter, business financial statements, or brokerage records showing a liquidation. If the bank can’t satisfy itself about the source, it can decline the deposit or file a Suspicious Activity Report.
Cash deposits of $10,000 or more also generate an automatic Currency Transaction Report to the Financial Crimes Enforcement Network. Wire transfers from another bank account usually don’t raise this issue because the source is traceable. Physical cash will add documentation and processing time.
How the Money Moves
Transfers of this size almost always go by wire. Most banks require a signed wire authorization form with the receiving routing number and account details. Domestic wire fees at major banks run from nothing to about $40, which is negligible on a deposit this size. Once the wire clears, the bank issues a deposit receipt.
At or before opening, the bank provides a Truth in Savings disclosure listing the annual percentage yield, term, early withdrawal penalty, and renewal terms.5Consumer Financial Protection Bureau. 12 CFR Part 1030 – Truth in Savings (Regulation DD) Read the APY, not the nominal rate; the APY accounts for compounding and is the number you actually earn.
Don’t Miss the Auto-Renewal Window
Most CDs renew automatically at maturity at whatever rate the bank is offering then, which can be significantly below your original rate. The bank must send a written notice before maturity with the renewal terms and the window to withdraw or change the account.6Consumer Financial Protection Bureau. What Is a Certificate of Deposit (CD) Rollover or Renewal? That grace period is typically seven to ten days. Miss it and the million gets locked into a new term at the bank’s chosen rate, with the full early withdrawal penalty applying again if you want out. Put a reminder on your calendar a month before maturity.
Alternatives Worth Weighing
A single jumbo CD isn’t the only way to park a million dollars safely. Each option trades something off against something else.
- U.S. Treasury securities carry the full faith and credit of the federal government with no coverage cap, and interest is exempt from state income tax. Yields are sometimes slightly below jumbo CD rates, and selling before maturity exposes you to price fluctuations.
- Money market accounts pay variable interest and allow limited check-writing and transfers, so there’s no early withdrawal penalty. Rates are generally lower than jumbo CDs and move with the market. FDIC limits still apply.
- Brokered CDs are bought through a brokerage and can be sold on the secondary market instead of paying an early withdrawal penalty, though the sale price depends on current rates. A brokerage can also spread the deposit across multiple banks automatically to stay inside FDIC limits.
For most people with a million dollars to keep safe, some mix of these tools makes more sense than one CD at one bank. The insurance gap alone is reason enough to diversify, and the tax savings on Treasuries or the liquidity of a money market account can outweigh a modest rate advantage on the jumbo.