Corporate vs Government Bonds

The Same Instrument, Different Promises

A bond is a loan in tradeable form. The borrower — called the issuer — promises to pay regular interest (the coupon) and return the original loan amount (the face value) on a set date (the maturity). That structure is identical whether the issuer is the US Treasury or a supermarket chain. What differs is the quality of the promise behind it.

Government bonds are backed by the taxing power of a nation-state. Corporate bonds are backed by the revenues and assets of a business. Businesses can — and do — go bankrupt. National governments borrowing in their own currency almost never default outright, because they can, in the extreme, create more of that currency. That fundamental difference in risk shapes everything else: the yield, the rating, and the type of investor who buys the bond.

If you are new to how bond prices and yields relate to each other, the guide Why Bond Prices and Yields Move Opposite is a good starting point before going further.

Government Bonds: The Risk-Free Baseline

The phrase risk-free rate comes up constantly in finance. It refers to the yield on a high-quality government bond — most often a US Treasury — used as the starting point for pricing every other asset. The logic is simple: if a borrower with the power to tax and print money cannot repay you, almost nothing else can be considered safe either.

The main risk for government bond holders in developed markets is therefore not credit risk (will I get my money back?) but interest-rate risk (what happens to my bond's price if rates rise?). A bond's sensitivity to rate moves is measured by its duration — the longer the maturity, the bigger the price swing for a given change in rates. A 30-year Treasury will fall in price much more sharply than a 2-year Treasury if interest rates rise by the same amount.

Common government bond benchmarks around the world include US Treasuries, UK Gilts, German Bunds, Japanese Government Bonds (JGBs), and French OATs. Traders and economists treat the 10-year government yield as the most-watched benchmark in each country.

Corporate Bonds: Credit Risk Layered on Top

When a company issues a bond, it is asking investors to lend it money on the belief that future cash flows will cover the payments. A healthy, well-established company with steady revenues carries relatively low credit risk. A younger or more indebted company carries higher credit risk. That risk is assessed and published by credit rating agencies — chiefly S&P, Moody's, and Fitch — whose letter grades tell investors at a glance how risky the issuer is considered to be.

Bonds rated BBB− and above (S&P scale) are called investment grade. Bonds rated below that are called high-yield bonds, or informally "junk bonds." High-yield bonds pay more because investors demand more compensation for the extra chance of not being repaid. The credit ratings and spreads guide covers the full rating ladder in detail.

Why Corporate Yield = Government Yield + Spread

The credit spread is the extra yield a corporate bond pays above a comparable government bond. "Comparable" means similar maturity — a 5-year corporate bond's spread is measured against a 5-year government bond, not a 30-year one. If a 5-year government bond yields 4% and a 5-year corporate bond from a solid company yields 4.8%, the credit spread is 0.8 percentage points, or 80 basis points (one basis point = one hundredth of a percentage point).

Spreads widen when investors grow nervous about a company's or the economy's health, and tighten when confidence is high. Watching spread movements across many corporate bonds at once gives economists a real-time read on risk-on / risk-off sentiment in credit markets. The bond market guide explains how these forces interact at the market level.

Seniority and Security: Who Gets Paid First?

Not all corporate bonds are equal even within the same company. Bonds are ranked by seniority — the order in which creditors are repaid if the company fails. Secured bonds are backed by specific assets (a building, a fleet of aircraft). Senior unsecured bonds have no collateral pledge but sit ahead of other creditors in the repayment queue. Subordinated bonds (sometimes called junior debt) are repaid only after senior creditors are made whole.

Lower seniority means more risk, so subordinated bonds pay a higher yield to attract buyers. At the very bottom sits equity (stock), which gets whatever is left — often nothing in bankruptcy. This pecking order matters enormously during periods of financial stress, and it explains why two bonds from the same company can carry very different yields and ratings.

Comparison at a Glance

Honorable Mentions: Munis and Supranationals

Municipal bonds (munis) sit between the two main categories. They are issued by US state and local governments — cities, counties, school districts — and often carry interest that is exempt from federal income tax, which makes their yield math different from straightforward government or corporate comparisons.

Supranational bonds are issued by international institutions such as the World Bank or the European Investment Bank. They carry very high credit ratings, backed by the collective guarantees of multiple member governments, and their yields typically sit close to top-tier sovereign levels.

Both categories are traded on the broader bond markets and follow the same price-yield mechanics as any other bond.

What to Watch and Where to Find It

Traders typically watch government yields for signals about monetary policy expectations — a rising 10-year yield often reflects expectations of higher policy rates or stronger growth. They watch corporate spreads for signals about economic confidence — widening spreads historically have appeared ahead of recessions, while tightening spreads often accompany bull markets in equities.

The yield curve — the line connecting yields across different government bond maturities — is its own rich topic. When short-term yields rise above long-term yields, economists read it as a potential warning sign; that phenomenon is explained in the guide on the yield curve. Live government yields and corporate bond data are available on the bonds page, and scheduled central bank decisions that move both markets appear on the economic calendar.

Understanding liquidity is also important when comparing the two categories. Large government bond markets — especially US Treasuries — are among the most liquid markets on Earth, meaning large trades can happen with minimal price impact. Many corporate bonds, especially from smaller issuers, trade far less frequently, which can make it harder to buy or sell quickly without affecting the price.