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Compare the Treasury’s annualized yield with the savings account APY or CD rate for a similar time period, then weigh taxes, access to your money, early-withdrawal costs, and protection. A Treasury yield is not a coupon payment, and selling a Treasury before it matures can produce more or less than its face value.
Compare rates that cover the same time period
Start with when you expect to need the money. Match that time horizon to a Treasury bill, note, savings account, or CD rather than comparing unrelated terms. Treasury bills mature in one year or less, with listed terms ranging from four weeks to 52 weeks. Treasury notes have terms of 2, 3, 5, 7, or 10 years; bonds mature in 20 or 30 years. TreasuryDirect explains Treasury bills and Treasury notes, along with other marketable securities.
Compare annualized figures on a like-for-like basis: a Treasury investment yield or yield to maturity against the deposit’s APY or quoted rate. Check how each rate is calculated and the payment or compounding schedule. An APY reflects the effect of compounding; the Treasury’s yield to maturity is an annual rate-of-return measure based on its price and cash flows.
Understand what a Treasury yield measures
A Treasury note or bond’s coupon (interest) rate is not the same as its yield to maturity. Notes and bonds pay interest every six months, but yield to maturity measures the annual rate of return if the security is held to maturity under the yield calculation’s assumptions. Treasury prices move in relation to the coupon rate and yield: when the yield to maturity is above the interest rate, the price is below face value; when it is below the interest rate, the price is above face value. TreasuryDirect describes bond pricing and yields.
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Bills work differently: they are bought at a discount and pay face value at maturity. The difference between purchase price and face value is the interest earned; a bill does not pay a periodic coupon. These mechanics matter when comparing the Treasury’s stated annualized yield with the APY or rate shown for a deposit.
Estimate the after-tax return
Interest from Treasury marketable securities is subject to federal income tax but exempt from state and local income taxes. Savings-account and CD interest may be subject to federal, state, and local taxes, depending on the saver’s circumstances. As a result, a Treasury with a lower headline yield could compare more favorably after state and local taxes for some taxpayers. Do not assume it will: the result depends on your tax situation. See TreasuryDirect’s tax information and consult a qualified tax professional about individual circumstances.
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Compare access, penalties, and price risk
A savings account is designed for access to funds, subject to the institution’s terms. A CD generally commits the saver to a set term; withdrawing before the term ends usually triggers a penalty. Compare the term, interest rate, and early-withdrawal penalty before choosing a CD, as the Consumer Financial Protection Bureau advises.
Treasury bills can be held to maturity or sold earlier. Marketable Treasury notes and bonds can also be sold before maturity, but the sale price may be above or below face value. If you may need the money early, account for that possibility rather than assuming you will receive the face value. Holding to maturity avoids having to sell at a market price, though it does not make the funds available before the maturity date.
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Eligible savings deposits and CDs at an FDIC-insured bank are covered up to $250,000 per depositor, per insured bank, per ownership category. The FDIC does not insure Treasury bills, notes, or bonds. Treasury securities are obligations of the U.S. Treasury, but that is different from deposit insurance. Credit-union deposits, including CDs, may be insured by the NCUA; check the institution and account’s coverage. Details are available from the FDIC’s deposit-insurance guidance.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Use dated rate data carefully
Rates change, so check the Treasury yield and the specific institution’s current APY or CD offer when deciding. As a historical reference, the FDIC’s national-rate table dated April 20, 2026 reported a 1.53% national rate for a 12-month CD and a corresponding 3.68% Treasury yield. Those figures are dated national-rate data—not current October 2026 quotes and not the offer from any particular bank. The FDIC’s national rates and rate caps table describes its rate categories and methodology.
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A practical comparison checklist
- Choose a time horizon. Decide when you may need the money, then compare products with terms that fit that period.
- Write down comparable annualized rates. Record the Treasury yield and the account APY or CD rate, including the date and source of each quote.
- Account for taxes. Consider federal tax on Treasury interest and its state and local tax exemption alongside the tax treatment of deposit interest.
- Assess early access. Check the CD’s early-withdrawal penalty and the possibility that selling a Treasury before maturity could return less than its face value.
- Verify protection and coverage limits. Confirm whether a bank or credit union is federally insured and whether your total deposits fit within applicable coverage limits.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
