The best place for your cash depends on liquidity, rate certainty, time horizon, and risk—not simply the highest advertised yield.
By Sang Lee — Founder and Editor of AssetCalculus | Published by AssetCalculus
What Is Happening With Rates?
As of August 2026, the Federal Reserve is holding its benchmark federal funds rate at a target range of 3.50%–3.75%, unchanged since the Federal Open Market Committee’s July 29, 2026 meeting. The next scheduled rate decision comes September 15–16, 2026. Even with the Fed on hold, bank-advertised APYs and Treasury market yields can still move between now and then — banks set their own rates independently, and Treasury yields shift daily with market expectations.
When the Fed keeps rates steady rather than cutting, it tends to keep short-term yields elevated across savings accounts, CDs, and short-maturity bonds — though each responds a little differently. High-yield savings account rates are variable: a bank can raise or lower them at any time, including in anticipation of a future Fed move. CD rates are fixed once you open the account, for whatever term you choose, but a new CD opened later will reflect wherever rates stand at that time. Treasury yields are set continuously by the bond market based on investors’ expectations for future Fed policy, inflation, and growth — not directly by the Fed’s current target range — which is why a 1-year Treasury yield can sit above or below the fed funds range depending on what the market expects over the next year.
The Three Choices
High-Yield Savings Account. A high-yield savings account at an FDIC-insured bank pays a variable APY that can change at any time, in either direction. Advertised rates reached as high as 4.21% under specific account, balance, and deposit requirements, while less restrictive examples were around 4.01% as of August 21, 2026. You can deposit or withdraw whenever you want, which makes this the most liquid of the three options — the tradeoff is that the bank can lower your rate without much notice, especially if the Fed eventually cuts.
Certificate of Deposit (CD). A CD locks in a fixed APY for a set term — 6 months, 12 months, 5 years, whatever you choose — in exchange for agreeing not to withdraw the money until maturity. As of August 2026, top widely available 12-month CD rates are commonly around 4.30%. Withdraw early and most banks charge a penalty, often equal to several months of interest. CDs are FDIC-insured the same way savings accounts are.
Individual Treasury Securities. The U.S. Treasury sells bills, notes, and bonds directly to the public through TreasuryDirect.gov or through a brokerage account. A one-year Treasury security is generally a 52-week Treasury bill rather than a coupon-paying note. A 52-week Treasury bill is generally purchased at a discount or at face value; if held to maturity, the investor receives its face value, and the difference between the purchase price and face value represents the interest earned. As of August 20, 2026, the 1-Year Treasury Constant Maturity Rate — a market-based benchmark yield quoted on an investment basis, not the confirmed return on any specific bill — stood at 3.99%. Treasuries aren’t FDIC-insured — they’re backed instead by the full faith and credit of the U.S. government, which is generally treated as comparably safe from a credit-risk standpoint.
That last point is where individual Treasuries and Treasury bond funds diverge, and the two are easy to confuse. A bond fund or ETF holds a rotating basket of Treasury securities and has no maturity date of its own — it continuously buys and sells holdings. Its share price moves inversely with interest rates: when rates rise, existing bond prices (and fund share prices) typically fall, and vice versa. An individual Treasury held to maturity avoids the need to realize interim market-price changes because the investor does not sell it before maturity — it can still carry inflation and opportunity-cost risk. But if you sell an individual Treasury before maturity on the secondary market, you are exposed to that day’s market price, which can be above or below what you paid, for the same reason a bond fund’s price moves.
Side-by-Side Comparison
| Feature | High-Yield Savings | 12-Month CD | 1-Year Treasury |
|---|---|---|---|
| Yield: fixed or variable | Variable — can change anytime | Fixed for the full term | Fixed to maturity |
| Principal value | Stable; no market price risk | Stable; no market price risk | Stable if held to maturity; can rise or fall if sold early |
| Liquidity | High — withdraw anytime | Low — locked until maturity | Moderate — sellable before maturity, at that day’s market price |
| Maturity | None (open-ended) | Term you choose (e.g., 12 months) | Term you choose (e.g., 1 year) |
| Early exit / sale risk | No market-price risk or fixed-term early-withdrawal penalty; account transfer limits, processing times, or institution-specific restrictions may apply | Early-withdrawal penalty, often several months’ interest | Selling before maturity may produce a gain or loss vs. what you paid |
| FDIC insured? | Yes, up to $250,000 per depositor, per insured bank, per ownership category | Yes, up to $250,000 per depositor, per insured bank, per ownership category | Not FDIC-insured; backed by the full faith and credit of the U.S. government instead |
| Commonly suited for | Money you might need at any time | Money you’re confident you won’t need until a known date | Money you can hold to a known date, especially for state-tax-sensitive savers |
The Numbers
The following is a simplified, illustrative comparison — not a guaranteed-return calculation — showing what $25,000 held for 12 months might produce in each option, using representative rates available in August 2026.
- High-yield savings, 4.15% representative hypothetical APY. This figure is illustrative only, not a specific advertised rate — actual advertised rates as of August 21, 2026 ranged from about 4.01% with fewer account conditions up to 4.21% under specific account, balance, and deposit requirements. Since the real rate is variable, this example assumes 4.15% holds for the full year, which isn’t guaranteed. $25,000 × 4.15% = an illustrative $1,037.50 in interest → illustrative ending balance ≈ $26,037.50.
- 12-month CD, 4.30% APY. Unlike the other two figures here, this reflects an actual advertised rate available with a modest minimum deposit as of late August 2026. $25,000 × 4.30% = $1,075.00 in interest → ending balance = $26,075.00, fixed regardless of what the Fed does during the year, assuming no early withdrawal.
- 1-year Treasury benchmark, 3.99%. Using the August 20, 2026 constant-maturity market yield as a simplified benchmark, $25,000 × 3.99% produces an estimated annualized return of approximately $997.50. This is an illustration, not an exact Treasury bill purchase calculation. Actual proceeds depend on the security’s auction or market price, maturity date, and transaction details.
On this illustrative, pre-tax basis, the CD produces the most interest in this comparison — about $77.50 more than the Treasury benchmark figure and roughly $37.50 more than the savings-account illustration. None of these three figures should be read as a confirmed or guaranteed result: the savings rate isn’t locked in, the Treasury figure is a benchmark rather than a specific bill’s purchase outcome, and actual results for either could differ from what’s shown here.
Taxes change the comparison, though not in a way this article can resolve for you individually. Treasury interest is subject to federal income tax but exempt from state and local income tax. Savings account and CD interest, by contrast, is generally subject to federal income tax and may also be subject to state and local income taxes, depending on the applicable jurisdiction. In a state that taxes interest income, that exemption can narrow — or in higher-tax states, potentially erase — the CD’s raw-dollar edge over the Treasury benchmark figure. This is general information, not individualized tax advice; how it nets out depends on your own bracket and state, so a tax professional is the right resource for your specific situation.
How to Think About the Decision
- Money you might need at any moment — a genuine emergency fund — generally favors liquidity. A high-yield savings account (or money market account) makes more sense here than locking funds into a CD or Treasury, even if the advertised rate is a bit lower.
- Money you’re fairly confident you won’t touch for 6–12 months can reasonably go into a CD or a Treasury maturing around when you expect to need it, since you’re not relying on same-day access.
- Money you can genuinely hold until a specific future date is where a CD or an individual Treasury maturing near that date removes the guesswork — you know today what you’ll have at maturity.
- Uncertainty about which way rates are headed cuts both ways: if you expect the Fed to cut, locking in today’s rate with a CD or Treasury protects you from a lower rate later; if you expect rates to stay elevated, staying variable in a savings account keeps you free to move if a better offer appears. Nobody can know this with certainty in advance, which is exactly why matching the account type to your own time horizon and need for access matters more than chasing whichever number is largest.
There’s no single “best” answer here — the right mix depends on how soon you might need the money and how much certainty you want about the rate you’ll earn.
Try the Calculator
Want to run these numbers on your own balance, rate, and time horizon? Try the Compound Interest Calculator.
The Bottom Line
A high-yield savings account is fundamentally about liquidity — a variable rate in exchange for keeping your money instantly accessible. A CD is about rate certainty — an early-withdrawal penalty in exchange for locking in a fixed rate for a set term. An individual Treasury is about understanding maturity and market price — hold it to maturity and you know exactly what you’ll get, but sell early and its value can move above or below what you paid, though it also carries a state-tax advantage the other two don’t. Comparing them properly means asking what you actually need — liquidity, certainty, or tax efficiency — rather than simply picking whichever advertised rate looks biggest.
Educational note: This article is for general educational and informational purposes only. It does not constitute individualized financial, investment, tax, or legal advice.
Official Sources and Assumptions
- Federal Reserve, FOMC statement, July 29, 2026: federalreserve.gov
- Federal Reserve, FOMC meeting calendar (for the September 15–16, 2026 meeting date): federalreserve.gov
- FRED (St. Louis Fed), 1-Year Treasury Constant Maturity Rate, quoted on an investment basis (DGS1) — a market-based benchmark yield, 3.99% as of August 20, 2026, not the confirmed return on any specific bill: fred.stlouisfed.org
- TreasuryDirect, tax treatment of Treasury marketable securities: treasurydirect.gov
- TreasuryDirect, Treasury Bills (discount pricing and how interest is earned): treasurydirect.gov
- FDIC, deposit insurance coverage: fdic.gov
- Investor.gov, Certificates of Deposit (CDs): investor.gov
- FINRA, Bonds overview: finra.org
- NerdWallet, Best High-Yield Online Savings Accounts — rates ranging from about 4.01% (fewer conditions) up to 4.21% (Axos Bank, subject to specific account/balance/deposit requirements), accessed August 21, 2026: nerdwallet.com
- NerdWallet, Best 1-Year CD Rates — top non-jumbo rate 4.30% (CFG Bank, $500 minimum), accessed August 21, 2026: nerdwallet.com
Rates cited reflect general market conditions as of the dates noted above and are not a recommendation of any specific bank, fund, or security; always confirm current rates directly with the institution or on TreasuryDirect.gov.
Related Reading
For the latest on where this rate environment could be headed next, see our analysis of Kevin Warsh’s first Jackson Hole speech as Fed chair and what it could mean for your money.