Education
Agency Bonds vs CDs vs the 10-Year Treasury: What Do You Actually Keep?
The investment with the highest advertised rate may not leave you with the most money. Taxes, early-sale losses and callable bonds can change the result.
· Updated · 8 min read
The bond with the highest rate is not always the one that leaves you with the most money.
A CD may lose part of its advantage to state tax. A 10-year Treasury may fall in price if you sell early. An agency bond may be repaid just when you want to keep earning its attractive rate.
So do not compare these investments by yield alone.
Compare the promise, the taxes, the exit rules and the risks.
What exactly are you buying?
This article is for a U.S. taxpayer buying dollar investments in a taxable account.
A CD is a bank deposit. If it is issued by an FDIC-insured bank, it may be covered up to the applicable insurance limit. The standard limit is generally $250,000 per depositor, per insured bank, for each ownership category.
A 10-year Treasury note is money lent directly to the U.S. government. It is backed by the full faith and credit of the United States.
An agency bond needs more explanation. Some are connected to government agencies. Others are issued by government-sponsored companies such as Fannie Mae or Freddie Mac. Fannie Mae and Freddie Mac bonds are not guaranteed by the U.S. government.
Do not assume that every bond called “agency” has the same protection as a Treasury.
| Question | Bank CD | 10-year Treasury | Typical Fannie/Freddie bond |
|---|---|---|---|
| Who owes you? | The bank | The U.S. Treasury | Fannie Mae or Freddie Mac |
| Government protection | FDIC insurance within the limits | U.S. government backing | No U.S. government guarantee |
| Can it end early? | You may pay a penalty or sell at a loss | The government does not call a normal Treasury note | Many agency bonds can be called early |
| What if you sell early? | A brokered CD may sell below its original value | The price may be above or below what you paid | The price depends on rates, the issuer and call terms |
| State income tax | Usually taxable | Interest is exempt | Depends on the bond; check first |
A Treasury is reliable at maturity, but its price can move
If you hold a 10-year Treasury until maturity, you know the payments it is meant to make.
But you may not get your full investment back if you sell it early.
When market interest rates rise, older bonds paying lower rates become less attractive. Their prices fall. Longer-term bonds usually move more than short-term bonds.
This is an important distinction:
The U.S. government can stand behind the payment at maturity while the bond still loses market value before maturity.
A 10-year Treasury may suit money that can remain invested for many years. It is not a good cash replacement simply because the government backs it.
A CD gives you a date. A callable bond gives the issuer a choice.
A normal CD is easy to understand. You deposit money for a fixed period and the bank pays the agreed rate.
The trade-off is access.
A bank may charge a penalty if you close a CD early. A brokered CD is different: you usually have to sell it through the broker. If rates have risen, buyers may offer less than you paid.
A callable agency bond has another problem. The issuer may have the right to repay you before the final maturity date.
Imagine buying a 10-year agency bond with an attractive rate.
If market rates fall, the issuer may call the bond and return your money. You then have to reinvest at lower rates.
If market rates rise, the issuer may leave the bond outstanding. Your bond keeps paying the old rate while newer bonds pay more, so its market price can fall.
In simple terms:
- when the bond becomes attractive to you, the issuer may take it back;
- when the bond becomes unattractive to you, the issuer may leave it with you.
That is why a callable agency bond may pay more than a Treasury. Part of the extra yield pays you for giving the issuer this choice.
Before buying one, check the yield to worst. This is the lowest expected yield under the bond’s permitted call dates, assuming the issuer does not default.
A simple after-tax comparison
Here is a made-up example. These are not current market quotes.
Assume the investor pays 32% federal income tax and 5% state income tax.
| Investment | Advertised yield | Simplified yield after tax |
|---|---|---|
| Bank CD | 4.75% | 2.99% |
| 10-year Treasury | 4.50% | 3.06% |
| Taxable callable agency bond | 5.05% | 3.18% |
The CD starts with a higher yield than the Treasury. After tax, the Treasury comes out slightly ahead because Treasury interest is exempt from state and local income tax.
The agency bond still shows the highest after-tax yield. But that extra return comes with call risk, possible lower liquidity and issuer risk.
The basic calculation is:
after-tax yield = stated yield × (1 − applicable tax rates)
This example is deliberately simple. It does not include trading costs, bid-ask spreads, capital gains, original-issue discount or special tax rules.
The lesson is not that Treasuries always beat CDs.
The lesson is: compare what remains after tax.
Tax idea 1: use the Treasury state-tax exemption
Interest from Treasury bills, notes and bonds is subject to federal income tax. It is exempt from state and local income tax.
This can matter for someone living in a high-tax state. It does not matter as much for someone with no state income tax.
It also does not help inside an IRA, because the account already shelters current income.
If you use a Treasury fund rather than owning Treasury securities directly, check what the fund actually holds. Income from repurchase agreements or other holdings may receive different state-tax treatment.
Tax idea 2: place interest-paying assets in the right account
Interest from CDs and most taxable bonds is normally taxed as ordinary income.
Some investors therefore hold more of these assets in tax-deferred retirement accounts. They may keep broad equity funds in taxable accounts, where qualified dividends and long-term gains may receive lower tax rates.
But this is not a rule for everyone.
Withdrawals from traditional retirement accounts may later be taxed as ordinary income. Required distributions may apply. Personal tax rates can change.
Think across all household accounts instead of trying to make each account look like a complete portfolio.
Tax idea 3: harvest bond losses carefully
Bond prices can fall when interest rates rise.
If a bond or bond fund in a taxable account is below its purchase price, an investor may sell it and record a capital loss. That loss may offset capital gains and, within IRS limits, some other income.
The investor can buy a different bond or fund to keep similar market exposure.
But the replacement must not be substantially identical. Otherwise, the wash-sale rule may delay the loss deduction. Purchases made by a spouse or in an IRA can also create problems.
Do not change the portfolio’s risk just to claim a tax loss. A replacement with a very different maturity may behave very differently.
Tax idea 4: compare municipal bonds after tax
Some municipal-bond interest is exempt from federal income tax. It may also receive state-tax benefits for residents of the issuing state.
That can make municipal bonds useful for investors in higher tax brackets.
But tax-free does not mean risk-free.
Municipal bonds can have credit risk, call risk, liquidity risk and interest-rate risk. Some income may also be affected by the alternative minimum tax.
Compare the municipal bond’s after-tax value with a Treasury, CD or agency bond of similar maturity and quality.
Where each choice can disappoint you
Every option has a bad scenario.
For a 10-year Treasury, the bad scenario is needing to sell after rates have risen. The government backing remains, but the market price may be lower.
For a CD, the bad scenario is maturity after market rates have fallen. You get your money back, but the new CD rate may be much lower.
For a callable agency bond, falling rates can cause the issuer to repay you early. Rising rates can leave you holding a lower-rate bond that has fallen in price.
No single product wins in every interest-rate environment.
A simple decision process
Start with the date when you need the money.
- For a known short-term expense, compare insured CDs with short-term Treasuries maturing near that date.
- For money that can stay invested for ten years, a 10-year Treasury may offer a clearer promise than a callable bond.
- Before buying an agency bond, check the issuer, guarantee, first call date, yield to worst, liquidity and tax treatment.
- Do not buy a long-term bond for emergency money merely because its yield is higher.
- Compare after-tax yields, not just advertised yields.
The best conservative investment is not automatically the one with the strongest guarantee or highest rate.
It is the one that matches the job.
Is the fixed-income part of your portfolio built around your spending dates—or simply around the rates that looked attractive at the time? Book a portfolio review. We will map each CD, Treasury, agency bond and bond fund to its job, identify call and interest-rate risks, and show which tax questions you should discuss with a qualified tax professional.
Sources and method
- U.S. Treasury, About Treasury Marketable Securities — Treasury backing and the ability to sell before maturity.
- U.S. Treasury, Tax Forms and Withholding — federal tax and the state and local tax exemption.
- FDIC, Shopping for a Certificate of Deposit and Deposit Insurance — CD insurance and brokered-CD risks.
- Fannie Mae, Global Debt Facility offering circular — guarantee, call and tax terms.
- Freddie Mac, Reference Notes — issuer and guarantee terms.
- FINRA, Bond Investing and Due Diligence — questions to ask before buying a bond.
- IRS Publication 550 — investment-income and wash-sale tax rules.
The tax table uses made-up yields and tax rates to explain the calculation. It is not a current quote or personal tax estimate. It leaves out trading costs, original-issue discount, market discount, capital gains and other individual factors.
General information and education for U.S. investors, not personalised investment, legal or tax advice or a recommendation regarding any security. Bond prices can fall when interest rates rise, and selling before maturity can produce a loss. Tax treatment depends on the investor, account, issuer, security and jurisdiction; consult a qualified U.S. tax professional. Historical experience does not guarantee future outcomes. North Pole South Pole Financial Services is an AMFI-registered Mutual Fund Distributor in India (ARN-286779), not a U.S.-registered investment adviser.
