Overview
This series explains how expected government debt can raise long-term real sovereign yields, separating changes in the longer-run neutral rate from changes in the term premium. A Federal Reserve study of the 2021 Georgia Senate runoff provides a local US causal estimate; BIS evidence shows why maturity, fiscal credibility, liquidity and intermediary balance sheets can amplify or contain the response. The progression moves from identification to duration supply, market feedback and policy diagnosis. The evidence supports a conditional mechanism, not a universal coefficient or safe debt threshold.
Learning outcomes
- Expected government debt can raise long-term real yields through both the neutral rate and the term premium.
- In the studied US episode, the estimated term-premium response was larger than the neutral-rate response.
- Debt maturity, fiscal credibility and investor capacity determine how strongly supply reaches yields.
- Leverage, weak funding and forced sales can turn an orderly repricing into broader financial tightening.
Keywords
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PlansFAQ
Does more government debt always raise long-term interest rates?
No. The evidence supports a conditional positive response, not a fixed rule; market depth, maturity, fiscal credibility and investor capacity can make the response smaller or larger.
Why can government debt raise the term premium?
Government debt can raise the term premium when added duration is not perfectly substitutable and investors require more compensation to absorb its interest-rate and balance-sheet risk.
What did the 2021 Georgia Senate runoff reveal about debt and Treasury yields?
It showed that a sudden increase in expected US debt-financed stimulus was followed by higher long-term real Treasury yields, with most of the measured response attributed to the term premium.
When can a debt shock become a market crisis?
A debt shock can become self-reinforcing when leverage, short-term funding, margin calls, forced sales and weak liquidity reduce the market's capacity to absorb government bonds.