The Term Premium: Why Long Yields Can Rise While the Central Bank Cuts

Ask why the ten-year yield moved and you will usually be told something about interest rate expectations. That answer is incomplete in a way that matters, and the missing half explains most of what looks contradictory about the bond market.

The two components

A ten-year yield can be decomposed into two parts.

Expected average short rate. If you could roll over three-month bills for ten years, you would earn the average of the short-term rates that prevail over that decade. That average, as currently expected, is the first component.

Term premium. The extra yield demanded for locking money up for ten years instead of rolling short. It compensates for uncertainty - about inflation, about policy, about whether the bond will be worth its purchase price if sold early.

Yield equals expectations plus premium. Both move. They do not have to move together.

Why this resolves the confusion

The apparent puzzle - long yields rising while everyone expects rate cuts - stops being puzzling once you separate the two.

Markets can simultaneously expect lower policy rates and demand more compensation for duration risk. If the premium rises more than expectations fall, the yield goes up. Nothing inconsistent has happened. Two different things moved in two different directions and one won.

This is also why the same policy announcement can move the two-year and thirty-year yields in opposite directions. The short end is dominated by policy expectations. The long end is dominated by the premium.

Why nobody can tell you what it is

Here is the honest limitation, and it is not a small one.

The term premium cannot be observed. You see a yield. You cannot see how much of it is expectation and how much is compensation, because both are embedded in one number.

So it is estimated with statistical models. The best-known estimates come from the Federal Reserve Bank of New York, published and updated, and there are several other approaches in the academic literature.

Different models produce different numbers. They have at times disagreed about the level and occasionally about the sign. Any statement that "the term premium is X" means "this model estimates X" - which is worth knowing before building an argument on it.

The direction of change tends to be more robust than the level.

What pushes it up

Inflation uncertainty. The dominant driver. A ten-year bond pays fixed amounts; inflation erodes what they are worth. The more uncertain inflation is over that horizon, the more compensation a holder requires. Note this is uncertainty rather than level - stable high inflation is easier to price than unpredictable moderate inflation.

Supply. More long-dated government debt to absorb means investors must be induced to hold more of it, which requires a higher yield. This is why Treasury's quarterly refunding announcements - specifying how much will be issued at which maturities - move markets in their own right. The maturity mix can matter as much as the total.

Reduced central bank demand. Quantitative easing removed large quantities of long-dated bonds from the available supply, compressing the premium. Balance sheet reduction reverses that, returning supply to private hands and allowing the premium to rebuild.

Fiscal credibility. If investors doubt a government's long-run path, they demand more to lend to it for thirty years. This is usually gradual and occasionally abrupt.

Volatility in the bond market itself. When rates move unpredictably, holding duration is riskier, and riskier positions require more compensation.

What pushes it down

Safe-haven demand. In stress, capital moves into government bonds regardless of yield. Buyers accept less compensation because they want the safety.

Regulatory demand. Banks, insurers and pension funds are required or strongly incentivised to hold high-quality long-dated assets. That is price-insensitive demand, and it suppresses the premium structurally.

Central bank buying. The mechanism that compressed it for over a decade.

Why it matters beyond bonds

A rising term premium is not a bond market curiosity. It is a repricing of the discount rate for everything.

Equity valuations. Long-dated risk-free yields anchor the rate at which future company earnings are discounted. A higher premium lowers the present value of profits expected far out, which affects long-duration growth companies most.

Mortgages and corporate borrowing. Long-term borrowing costs key off long-dated government yields. A premium that rises while policy rates fall means borrowing gets more expensive even as the central bank eases - which blunts the policy.

Government finances. Higher long yields raise the cost of refinancing existing debt, which worsens the fiscal path, which can raise the premium further.

That last loop is why fiscal credibility and the term premium are discussed together.

What to watch

The NY Fed estimates, published and free. Watch the direction rather than treating any level as precise.

The curve's shape, particularly the spread between ten and thirty years. The long end is where the premium dominates.

Treasury refunding announcements, for the supply and maturity mix.

Inflation-linked bond breakevens, which separate expected inflation from real yields and help identify which component is moving.

The bottom line

Long yields are expectations plus compensation. Commentary usually discusses only the first, which is why the bond market so often appears to behave irrationally when it is doing something perfectly coherent.

The premium cannot be observed, only estimated, and the estimates disagree. What is not in doubt is that it exists, that it moves independently of policy expectations, and that when it rises it raises the cost of long-term money throughout the economy - regardless of what the central bank is doing at the front end.

This article is educational and is not financial advice. Bond prices and yields move inversely and are subject to interest rate risk.