HYSA vs CD vs Money Market (2026): Where Cash Actually Earns
The choice between these products matters far less than not leaving cash in an ordinary account. The FDIC's national average savings rate is 0.37%; a Treasury of comparable maturity pays 3.63%. On $25,000 that is $815 a year for one afternoon of paperwork.
Most writing on this question compares the products. The larger number is the one underneath: the average American deposit earns almost nothing, and the gap between that and a risk-free government bill is wider than any difference between the options below.
What the averages are
FDIC monthly national rates and rate caps, 21 September 2026. The national rate is the average across insured institutions weighted by deposits, so it reflects where money actually sits rather than the best available offer.
The average savings account pays $93 a year on $25,000. A Treasury pays $908. The averages are low because most deposits sit in large banks that do not compete on rate, not because the rate is unavailable: accounts paying several times the national average are ordinary, and moving is a transfer rather than a decision about risk.
Inflation makes the point sharper. Prices rose 3.04% over the past year, so cash in the average savings account lost 2.67% of its purchasing power, before any tax. Keeping pace is the job, and the average account does not do it.
What the products actually are
| Product | Protection | Access | Rate behaviour |
|---|---|---|---|
| High-yield savings account | FDIC or NCUA to $250,000 | Any time, though some banks limit certain withdrawals | Floats: falls when the Fed cuts, rises when it raises |
| Money market deposit account | FDIC or NCUA to $250,000 | Any time, often with cheques or a debit card | Floats, usually close to a savings account |
| Money market fund | Not insured. SIPC covers broker failure, not losses | Usually same or next business day | Floats with very short-term market rates, less a fee |
| Certificate of deposit | FDIC or NCUA to $250,000 | At maturity. Early withdrawal forfeits some interest | Fixed for the term, whatever rates do next |
| Treasury bills | Backed by the US government, no insurance needed | Hold to maturity, or sell on the market | Fixed for the term. Interest is exempt from state tax |
The one distinction worth memorising is between a money market deposit account and a money market fund. The names are nearly identical and the protection is not. The account is a bank deposit, insured. The fund is an investment holding very short-term debt, not insured by anyone against loss, though in practice the large government funds are conservative and SIPC covers the failure of your broker.
Choosing between them
- Money you might need this month. A high-yield savings account. The yield difference against the alternatives is small and the penalty for being wrong about timing is not.
- Money with a known date, a tax bill or a down payment in a year. A CD or a Treasury maturing just before you need it. Both lock the rate, which is what you want if rates fall, and neither needs to be sold at a loss if you hold to maturity.
- A large balance. Watch the $250,000 limit per bank per ownership category, and remember Treasuries have no limit at all.
- A high state income tax. Treasury interest is exempt from state tax. At a 9.3% state rate, a 3.63% Treasury is worth about 4.00% from a CD to match it after tax, which can change the answer entirely.
How the insurance really works
$250,000 is per depositor, per institution, per ownership category, and the last part is where the extra coverage lives. Single accounts are one category and joint accounts another, and a joint account insures $250,000 for each co-owner. A couple with a single account each and one joint account is covered to $1,000,000 at a single bank. Retirement accounts and certain trust accounts are further categories again.
Credit unions work identically through the National Credit Union Share Insurance Fund, at the same $250,000, and how many limits a household actually has is worked through separately. Neither covers money market funds, stocks, bonds or anything else that is not a deposit, however it is held.
The tax on it
Interest is ordinary income, taxed at your marginal rate rather than the lower rates on long-term capital gains, and reported on Form 1099-INT. At a 22% federal rate, 3.63% is 2.83% after federal tax, which against 3.04% inflation is roughly break-even in real terms. Cash preserves money; it does not grow it, and over long periods that is the argument for not holding more of it than you need.
See what a balance becomes with the compound interest calculator, and for the money that should not be in cash at all, the 401(k) limits are the better first stop.
Frequently asked questions
Is a high-yield savings account better than a CD?
It depends which way rates move. A savings rate floats, so it falls when the Fed cuts; a CD locks today's rate for its term. If you expect cuts and can spare the money for the term, the CD protects the rate. If you may need the cash, the savings account avoids an early withdrawal penalty.
Are money market funds FDIC insured?
No, and this is the most common confusion in cash. A money market *deposit account* at a bank is an insured deposit. A money market *fund* is an investment, not insured by the FDIC or NCUA. SIPC protects you if the brokerage fails, but not against the fund losing value.
How much is FDIC insurance?
$250,000 per depositor, per insured bank, per ownership category. Categories are the key word: a single account and a joint account at the same bank are insured separately, and a joint account covers $250,000 for each owner, so a couple can hold $1,000,000 at one bank across the two categories. Credit unions have the same limit through the NCUA.
What is the average savings account interest rate?
0.37%, the FDIC's national rate as of 21 September 2026. That is the average across insured banks, which is dragged down by the very large institutions where most deposits sit. Accounts paying many times that exist, which is the entire point of shopping for one.
Do I pay tax on savings interest?
Yes, as ordinary income at your marginal rate, reported on Form 1099-INT if it is $10 or more. Treasury interest is the exception worth knowing: it is taxable federally but exempt from state and local income tax, which makes T-bills better than their headline yield suggests in a high-tax state.
Is my money safe above the insurance limit?
Spread it, or use the ownership categories. Beyond that, Treasury bills carry no insurance limit because they are direct obligations of the government, and some banks offer network services that sweep balances across many insured institutions to multiply coverage.
What happens if I break a CD early?
You forfeit a set amount of interest, commonly three months' worth on a one-year CD and six to twelve months' on longer terms. The penalty can exceed the interest earned if you break it very early, which means losing a little principal. No-penalty CDs exist and pay slightly less.
Where should an emergency fund go?
A high-yield savings account, almost always. The deciding feature is being able to reach the money the day you need it without a penalty or a sale, which rules out ordinary CDs and makes the small extra yield elsewhere irrelevant.
Related guides
Both insure to $250,000 and the agency is the least interesting part. A couple at one bank can hold $1,000,000 insured, while money split across two brands of one charter has a single limit.
Every calculator assumes one constant rate, which no account has earned. On a lump sum the order of returns changes nothing at all. Add monthly contributions and the same returns rearranged differ by $59,441.
No federal contribution limit, $95,000 in one year per donor, $20,000 a year for K-12 from 2026, and up to $35,000 moved to the child's Roth IRA if the money is never needed for school.
Researching and writing about Canadian personal finance since 2026.
Last reviewed October 2026 · How we research
“HYSA vs CD vs Money Market (2026): Where Cash Actually Earns.” Vault Nerd, https://www.vaultnerd.com/learn/hysa-vs-cd-vs-money-market, updated October 2026.
- FDIC monthly national rates and rate caps, 21 September 2026
- FDIC, Understanding Deposit Insurance: $250,000 per depositor, per insured bank, per ownership category
- National Credit Union Administration: share insurance of $250,000 per member per ownership category
- SEC Investor Bulletin on SIPC protection, and money market fund disclosures: not FDIC insured
- Bureau of Labor Statistics, CPI-U US city average, annual averages 2025 and 2026
No bank, fund or product is reviewed on this page and Vault Nerd has no affiliate relationship in this category. Rates move constantly; the figures here are the published national averages on the date shown, not offers. Figures checked October 2026.