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Compare the Treasury’s annualized yield with the savings account’s APY or the CD’s rate over a similar holding period, then adjust for taxes, access, possible early-withdrawal costs, and deposit insurance. The right choice depends not only on the headline rate but also on when you may need the money and whether you would hold a Treasury to maturity.
Start with the same time horizon
A rate comparison is meaningful only when the options fit roughly the same period. A high-yield savings account is generally designed for ongoing access; a CD commits money for a stated term, while a Treasury has a maturity date. Treasury bills mature in one year or less, with terms ranging from four weeks to 52 weeks, according to TreasuryDirect. Treasury notes have terms of 2, 3, 5, 7, or 10 years, and Treasury bonds mature in 20 or 30 years.
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For a short-term goal, compare a bill with a savings account or CD that covers a similar period. For a longer goal, compare a note or bond with a deposit product of a similar term, if one is available. A longer Treasury maturity is not automatically a better match just because its yield is higher: you may have to sell it before maturity if your plans change.
Compare the right rate, not just the label
A savings account’s APY reflects the effect of compounding under the account’s stated terms. A CD offer may show an APY or an interest rate; check which figure it uses and how often interest is paid or compounded. For a Treasury, use the yield appropriate to the security and purchase price—not simply its coupon rate.
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Treasury bills
Bills do not pay periodic coupon interest. They are typically purchased below face value, and the difference between the purchase price and the face value paid at maturity is the interest earned. TreasuryDirect describes bills as short-term securities that mature in one year or less.
Treasury notes and bonds
Notes and bonds pay interest every six months, but their coupon (interest) rate is not the same as yield to maturity. Yield to maturity is an annual rate-of-return measure that reflects the security’s price as well as its payments and maturity. TreasuryDirect explains that when yield to maturity is above the coupon rate, the price is below par; when yield to maturity is below the coupon rate, the price is above par. See TreasuryDirect’s explanation of pricing and yields.
That difference matters if you buy a note or bond at a premium or discount, or sell it before maturity. The yield-to-maturity figure is not a coupon payment, and it does not guarantee that a sale before maturity will return face value.
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Treasury marketable-security interest is subject to federal income tax but exempt from state and local income taxes, as described by TreasuryDirect. Interest from a bank savings account or CD may be taxable under federal and state rules applicable to your circumstances. If you owe state income tax, comparing only the advertised rates can make a taxable deposit account look more favorable than it is relative to a Treasury.
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There is no single after-tax result that applies to everyone. Your tax bracket, state and local rules, and account details affect the comparison. Use your own situation or consult a tax professional rather than treating the Treasury’s state-tax exemption as a personal tax calculation.
Check access, penalties, and sale risk
A savings account is generally the more flexible option when you need access without waiting for a maturity date. A CD ties funds up for its term; withdrawing early typically triggers a penalty. The Consumer Financial Protection Bureau recommends comparing the term, interest rate, and early-withdrawal penalty before choosing a CD.
Treasury bills can be held to maturity or sold before maturity. Marketable Treasury notes and bonds can also be sold, but their market price may be above or below what you paid or their face value. If you sell before maturity, the amount you receive depends on the market price at that time; do not assume you will receive face value.
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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →- Choose for access: If you may need the money unexpectedly, account access and any withdrawal restrictions matter alongside yield.
- Choose a CD only with its terms in view: Check the maturity date and the penalty for taking money out early.
- Consider a Treasury maturity you can hold: If you might sell early, account for the possibility of a different sale price.
Understand what is insured
Eligible deposits at FDIC-insured banks—including savings accounts and CDs—are covered up to $250,000 per depositor, per insured bank, per ownership category. The FDIC explicitly excludes Treasury bills, notes, and bonds from FDIC deposit insurance. Treasury securities are obligations of the U.S. government, but they are not FDIC-insured deposits. For credit-union CDs, the CFPB says coverage is provided by the NCUA, generally up to $250,000; confirm the institution and account’s coverage directly.
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If your deposits approach or exceed the applicable insurance limit, check how the FDIC ownership categories and account registrations affect coverage rather than assuming the limit applies separately to every account.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Use dated rates carefully
Rates change, so compare current Treasury yields with the actual APY or CD offer available to you on the same date. The FDIC’s national-rate table dated April 20, 2026 reported a 1.53% national deposit rate for a 12-month CD and a corresponding Treasury yield of 3.68%. Those are dated national reference figures, not October 2026 quotes or a particular bank’s high-yield offer. The FDIC explains its rate categories and methodology in its national rates data.
Use such averages only as context. For a decision, check the current Treasury yield for the security and term you are considering and the financial institution’s current savings APY or CD terms. Confirm whether the quoted rate is annualized, whether it can change, and what conditions apply.
A practical comparison checklist
- Set the date you may need the money. Identify whether you need immediate access, can wait for a CD term, or can hold a Treasury until maturity.
- Match the term. Compare a Treasury and deposit product with similar time horizons rather than pairing a short-term account with a much longer-maturity security.
- Use comparable annualized figures. Compare a Treasury yield or yield to maturity with an account APY or CD rate, checking how each is calculated and paid.
- Estimate taxes for your situation. Include federal tax and the Treasury exemption from state and local income taxes; do not assume your personal tax result from a general rate comparison.
- Price the cost of changing plans. Include a CD’s early-withdrawal penalty or the chance a Treasury’s market price may be unfavorable if you sell before maturity.
- Verify protection and institution terms. Check FDIC or NCUA coverage as applicable and confirm the current offer directly with the provider.
For a like-for-like decision, compare the amount you expect to keep after taxes and any penalties over the period you can actually leave the money invested. A higher published yield may not suit you if it requires locking up funds you could need, while a liquid account may be worth considering even if its headline rate is lower.
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