Corporate bonds vs. Treasury bonds comes down to one question: who owes you the money. A Treasury bond is backed by the U.S. federal government’s power to tax and issue currency. A corporate bond is backed only by a company’s ability to keep paying. That single difference drives everything else you care about: the yield you earn, how you’re taxed, how easily you can sell, and what happens if the issuer runs into trouble.
Who Stands Behind the Bond
Treasury bonds are issued by the U.S. Department of the Treasury through its Bureau of the Fiscal Service in 20-year and 30-year maturities.1U.S. Department of the Treasury. Bonds and Securities The repayment promise is the “full faith and credit” of the United States. In practical terms, the government would raise taxes or issue new debt before missing a payment, which is why Treasuries function as the global benchmark for a risk-free investment.
Corporate bonds are issued by companies raising capital without diluting their shareholders. Repayment depends on the company’s revenue, cash flow, and assets. Some corporate bonds are secured by specific collateral like equipment or real estate; others are unsecured and rely on general creditworthiness. Either way, no government stands behind the obligation.
The Yield Gap and What You’re Paid For
Because the government can always raise revenue to pay its debts, Treasury bonds carry essentially zero credit risk. Corporate bonds carry real credit risk, and investors demand a higher yield to compensate. The gap between a corporate bond’s yield and a comparable-maturity Treasury is the “yield spread,” and it is the price tag on that extra risk.
Credit rating agencies grade the risk. AAA sits at the top of the scale with the lowest expected probability of default.2Fitch Ratings. Fitch Ratings – Rating Definitions Anything rated Baa3 (Moody’s) or BBB- (S&P, Fitch) or higher is “investment grade.”3The Association of Corporate Treasurers. Corporate Credit Ratings – A Quick Guide Below that line, bonds are called “high-yield” or “junk” because default risk climbs sharply.
S&P’s 2025 default data shows how sharply. Investment-grade issuers (AAA through BBB) defaulted at 0.00% that year. BB issuers defaulted at 0.08%, B at 1.18%, and CCC/C at 25.90%.4S&P Global Ratings. 2025 Annual Global Corporate Default and Rating Transition Study The yield spread widens as you move down the rating scale for exactly that reason.
With the 10-year Treasury yielding roughly 4.3% in early 2026, a high-quality investment-grade corporate might yield around 5.0% to 5.5%, a spread of roughly 70 to 120 basis points. High-yield bonds demand a much larger premium. Spreads also move with the cycle: in recessions and financial stress, investors flee to Treasuries and dump corporate bonds, and spreads widen sharply. In expansions, spreads compress.
How Taxes Shrink the Gap
This is where Treasuries have a structural edge many investors overlook. Interest from corporate bonds is taxed at every level: federal, state, and local. The IRS treats it as ordinary income, and so does your state.5Internal Revenue Service. Topic No. 403, Interest Received
Interest from Treasury bonds is subject to federal income tax but exempt from all state and local income taxes.5Internal Revenue Service. Topic No. 403, Interest Received The exemption is set by federal statute.6Office of the Law Revision Counsel. 31 USC 3124 – Exemption From Taxation
That exemption matters more than it sounds. Top state income tax rates range from zero in states like Texas and Florida to over 13% in California. If you live in a high-tax state, the state tax you avoid on Treasury interest closes much of the yield gap with corporates. To compare fairly, calculate a “tax-equivalent yield.” For an investor facing a combined 8% state and local rate, a Treasury yielding 4.3% is equivalent to a corporate bond yielding about 4.67% after the state tax savings. What looked like a generous corporate spread narrows into something more modest.
Whether the Issuer Can Take the Bond Back
Most corporate bonds include a call provision letting the issuer redeem the bond before maturity, typically at par or at a small premium. Investment-grade issues are usually callable at $1,000 (par); many high-yield bonds start with a call price above par that steps down each year on a schedule spelled out in the prospectus. Most callable bonds include at least a few months of call protection after issuance.
Call provisions cut against you. Companies call bonds when rates fall, which is exactly when you’d most want to keep that above-market coupon. Once called, you get your principal back and have to reinvest at lower prevailing rates. This reinvestment risk drags on long-term returns from corporate bonds.
Modern Treasury bonds (those issued since 1985) are not callable. Buy a 30-year Treasury and the coupon is yours for 30 years regardless of where rates go. That is a real advantage if you want locked-in, predictable income, and it also means Treasuries can appreciate further when rates fall because no call ceiling caps the price.
Selling Before Maturity
The U.S. Treasury market is the most liquid securities market on Earth. Average daily trading volume reached roughly $1.2 trillion in early 2026.7SIFMA. US Treasury Securities Statistics You can move large positions quickly with tight bid-ask spreads and minimal price impact.
Corporate bonds trade in a different world. Most transactions happen over-the-counter through a decentralized dealer network rather than on a centralized exchange. Liquidity varies enormously from one issue to the next. A recently issued bond from a large investment-grade company trades reasonably well. A smaller, older, or lower-rated issue can be genuinely illiquid, meaning you may struggle to find a buyer quickly or need to accept a lower price to exit. Price transparency has improved through FINRA’s Trade Reporting and Compliance Engine (TRACE), but bid-ask spreads on corporate bonds remain wider than on Treasuries. If you might need to sell before maturity, that difference is worth weighing.
What a Default Actually Costs
Treasury bonds have never had a payment default, so this really only applies to corporates. When a company enters bankruptcy, federal law sets a strict order of payment. Secured creditors (those with debt backed by specific collateral) are paid first. Unsecured creditors, including most bondholders, come next. Equity holders are paid last, and only if anything remains.8Office of the Law Revision Counsel. 11 US Code 1129 – Confirmation of Plan
Even with priority over stockholders, bondholders rarely recover in full. The long-term historical average recovery on senior unsecured bonds is about 38 cents on the dollar.9Moody’s. Corporate Default and Recovery Rates 1920-2006 Recovery rates run higher in healthy economies and lower in recessions, when defaults cluster and distressed asset values collapse together. Secured bonds recover more; subordinated bonds recover less. Diversifying across many issuers is the most practical way to manage this exposure.
If Inflation Is Your Concern
Standard fixed-rate bonds, corporate or Treasury, pay a set dollar amount. If inflation outpaces expectations, purchasing power erodes. Treasury Inflation-Protected Securities (TIPS) are built to address that risk.
TIPS come in 5-year, 10-year, and 30-year terms. The coupon rate is fixed at auction, but principal adjusts every six months based on changes in the Consumer Price Index for Urban Consumers (CPI-U). Because the coupon applies to the adjusted principal, interest payments rise with inflation. At maturity, you receive the greater of the inflation-adjusted principal or the original face value, so deflation over the bond’s life doesn’t hurt you either.10TreasuryDirect. Treasury Inflation-Protected Securities (TIPS)
No comparable inflation-linked product exists in the corporate bond market. If protecting purchasing power is a priority, TIPS are the only mainstream option, and they carry the same full-faith-and-credit backing as regular Treasuries.
How To Buy Each
Treasury bonds can be purchased directly from the government through TreasuryDirect.gov with a minimum of $100, in $100 increments.11TreasuryDirect. Treasury Bonds New issues are auctioned quarterly in February, May, August, and November, with reopenings of existing issues in the other months.12TreasuryDirect. When Auctions Happen (Schedules) You can also buy them through any brokerage on the secondary market. TreasuryDirect charges no commission, and most brokers charge none for Treasury trades. TIPS are available through TreasuryDirect at the same $100 minimum and also trade on the secondary market.10TreasuryDirect. Treasury Inflation-Protected Securities (TIPS)
Corporate bonds are bought almost exclusively through brokerage accounts. The standard face value is $1,000 per bond, and while many brokers let you buy as few as one or two bonds, some issues have much higher minimums, particularly institutional-grade debt that trades in blocks of $100,000 or $250,000. For broad corporate bond exposure without navigating individual issues, corporate bond ETFs and mutual funds offer diversified access with lower minimums and better liquidity.
Which One Belongs in Your Portfolio
The decision comes down to what you need the bond allocation to do. If the job is capital preservation, liquidity, and predictable income with no credit risk, Treasuries are the natural choice. The state and local tax exemption strengthens the case if you live in a high-tax state, and TIPS add inflation protection nothing on the corporate side can match.
If you’re willing to accept credit risk and thinner liquidity for higher income, corporate bonds earn their place. Investment-grade corporates offer a modest yield premium with historically negligible default rates. High-yield bonds pay substantially more, but default and recovery data make clear the losses can be steep when things go wrong. Most investors venturing into high-yield are better served by a diversified fund than by picking individual issues.
Many fixed-income portfolios hold both, using Treasuries as the stable foundation and layering corporates on top for extra yield. The right mix depends on your tax situation, your time horizon, and how much volatility you can tolerate in the part of your portfolio meant to be the calm anchor.