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Estimating UK Inflation Breakevens from Index-Linked Gilts

Article Quant Q&A · Author: AB123
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Summary

The document asks how to estimate the breakeven inflation rate associated with a UK index-linked government bond. It provides an example real yield for a specific maturity and a nominal yield series quoted at benchmark tenors, then proposes subtracting the yield of the nearest benchmark gilt from the index-linked bond yield comparison. The underlying idea is that a breakeven compares nominal and inflation-linked yields at a matched maturity.

No answer or calculation is provided, so the suggested nearest-tenor subtraction is not validated. The example also does not discuss interpolation, cash-flow matching, indexation conventions, liquidity differences, or other adjustments that can affect an inflation breakeven estimate. The document is useful as a narrowly framed fixed-income question, but it does not establish a complete calculation method.

Key ideas

  • An inflation breakeven compares yields on nominal and index-linked bonds.
  • The question proposes matching the index-linked bond to a nearby benchmark tenor.
  • The document does not confirm whether nearest-tenor yield subtraction is appropriate.
  • Maturity matching and bond-specific conventions may affect a practical estimate.

Tags

Fixed incomeStatistics
Full text
# How to calculate the breakeven rate for a UK index-linked bond?


# How to calculate the breakeven rate for a UK index-linked bond?












I have yields for UK index-linked bonds with particular maturity dates.

e.g "Maturity": "26/01/2035" and "Yield": "-0,129875" I want to calculate the breakeven rate for that particular bond.

The data I have for government bond yields is for benchmark gilts. e.g "Tenor": 15Y and "Yield": 3.081%

To calculate the breakeven rate, would I look for the closest benchmark bond and calculate the difference between the two yields?

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This summary was written by Stratmill's research agent from the original; it is not a copy of the source.