What a Yield Is Telling YouSome background helps
A high yield is a statement about risk, not a gift. Decomposing any yield into its four compensations — and what it means when one of them is missing.
The rule that survives every asset class
Yield above the risk-free rate is never free. It is payment for taking something on, and the analytical question is always the same: what did I take on?
$$ y = \underbrace{r_f}_{\text{time}} + \underbrace{s_{\text{credit}}}_{\text{default}} + \underbrace{s_{\text{liq}}}_{\text{exit}} + \underbrace{s_{\text{opt}}}_{\text{optionality sold}} $$
- The risk-free base is compensation for time alone, and it is the only component you get without taking a position on anything.
- Credit compensates for the possibility of not being repaid. Its fair size is roughly default probability × loss given default — the expected-loss calculator makes it concrete.
- Liquidity compensates for exit cost. It is real compensation, it is genuinely earned by anyone who can hold to maturity, and it is the component most often mistaken for skill.
- Optionality is the yield you were paid for an option you sold: a call on a callable bond, a put embedded in a coupon, a prepayment option in a mortgage pool.
Reading the components off a real quote
- Start with the right base. A yield quoted over a government bond and one quoted over swaps are not comparable — see how to read a bond quote.
- Then strip credit using default and recovery assumptions from a rating band or from the CDS market. If the cash spread exceeds the CDS-implied one materially, the difference is liquidity, funding, or documentation — not free money. The spread calculator puts G-, I- and Z-spreads side by side.
- Then strip optionality. For a callable bond, the honest number is yield to worst; the extra yield over an equivalent non-callable is the price of the option you wrote.
- What is left is the liquidity component, plus whatever you have failed to identify. The residual being large is a signal to keep reading, not to buy.
The four ways a yield can be high
| Reason | What you are being paid for | Is it earnable? |
|---|---|---|
| Credit risk | The chance of not being repaid | Yes, in a diversified portfolio, on average |
| Illiquidity | Not being able to leave quickly | Yes, if your horizon genuinely matches |
| Sold optionality | Someone else's right to change the deal | Yes, but the payoff is asymmetric against you |
| Return of your own capital | Nothing | No — this is not yield at all |
- The fourth row is the dangerous one. A "distribution" that includes return of capital, or a structured coupon paid out of your own principal buffer, appears in the same field on the same screen as the other three.
- The test: does the payment come from cash the asset generated, or from the pot? If total return is materially below the distribution rate over several years, the answer is the pot.
Yields that are low, and what that says
- A low or negative real yield is a statement about expected inflation and about how badly the market wants the safety — not a mispricing to be corrected. See inflation.
- A negative nominal yield, as existed on trillions of European and Japanese debt for years, is rational for a holder who needs collateral, a regulated buyer, or someone expecting deflation. It is irrational only for the retail buyer none of those describe.
- A spread that is very tight tells you the compensation for the risk is small, not that the risk is small. The risk is unchanged; the price of bearing it has moved.
Three checks before treating a yield as income
- Is it a yield or a distribution rate? They are different fields and different concepts, and only one of them is what the asset earned.
- Is it yield to worst? If there is any call, put or extension feature, anything else prices an outcome someone else controls.
- What is it after tax and after costs, for you specifically? The tax-equivalent yield calculator compares two instruments on the same basis, which is the only comparison worth making.
The one-line version
A yield is a price for a risk, quoted by a market that has already thought about it. Extra yield is not an opportunity that others missed; it is a description of what you are being asked to carry. The analysis is complete when you can name the thing.
Information and education only. This page explains a general analytical framework. It is not advice, not a recommendation of any security, and the ranges described are illustrative. Yields, spreads and tax treatment vary by market, instrument and jurisdiction.