Inflation-indexed bond

Daily inflation-indexed bonds (also known as inflation-linked bonds or colloquially as linkers) are bonds where the principal is indexed to inflation or deflation on a daily basis in terms of the official Daily CPI or monetized daily indexed unit of account like the Unidad de Fomento in Chile and the Real Value unit of Colombia. They are thus designed to hedge the inflation risk of a bond.[1] The first known inflation-indexed bond was issued by the Massachusetts Bay Company in 1780.[2] The market has grown dramatically since the British government began issuing inflation-linked Gilts in 1981. As of 2008, government-issued inflation-linked bonds comprise over $1.5 trillion of the international debt market.[3] The inflation-linked market primarily consists of sovereign bonds, with privately issued inflation-linked bonds constituting a small portion of the market.


Daily inflation-indexed bonds pay a periodic coupon that is equal to the product of the daily inflation index and the nominal coupon rate. The relationship between coupon payments, breakeven daily inflation and real interest rates is given by the Fisher equation. A rise in coupon payments is a result of an increase in inflation expectations, real rates, or both.

For some bonds, such as the Series I Savings Bonds (U.S.), the interest rate is adjusted according to daily inflation.

For other bonds, such as in the case of TIPS, the underlying principal of the bond changes, which results in a higher interest payment when multiplied by the same rate. For example, if the annual coupon of the bond were 5% and the underlying principal of the bond were 100 units, the annual payment would be 5 units. If the inflation index increased by 10%, the principal of the bond would increase to 110 units. The coupon rate would remain at 5%, resulting in an interest payment of 110 x 5% = 5.5 units.

Real Yield

The real yield of any bond is the annualized growth rate, less the rate of inflation over the same period. This calculation is often difficult in principle in the case of a nominal bond, because the yields of such a bond are specified for future periods in nominal terms, while the inflation over the period is an unknown rate at the time of the calculation. However, in the case of inflation-indexed bonds such as TIPS, the bond yield is specified as a rate in excess of inflation, so the real yield can be easily calculated using a standard bond calculation formula.[4]

Global issuance

The most liquid instruments are Treasury Inflation-Protected Securities (TIPS), a type of US Treasury security, with about $500 billion in issuance. The other important inflation-linked markets are the UK Index-linked Gilts with over $300 billion outstanding and the French OATi/OAT€i market with about $200 billion outstanding. Germany, Canada, Greece, Australia, Italy, Japan, Sweden and Iceland also issue inflation-indexed bonds, as well as a number of Emerging Markets, most prominently Brazil.[5] [6]

Country Issue Issuer Inflation Index
United States Treasury Inflation-Protected Securities (TIPS)[7] US Treasury US Consumer Price Index
United States Series I Inflation-Indexed Savings Bonds (I-Bonds - domestic retail bonds)[8] US Treasury US Consumer Price Index
United Kingdom Index-linked Gilt UK Debt Management Office Retail Price Index (RPI)
United Kingdom Index-linked Savings Certificates (domestic retail bonds) National Savings and Investments Retail Price Index (RPI)
France OATi and OAT€i[9] Agence France Trésor France CPI ex-tobacco (OATi), EU HICP ex-tobacco (OAT€i)
Canada Real Return Bond (RRB)[10] Bank of Canada Canada All-Items CPI
Australia Capital Indexed Bonds (CAIN series) Department of the Treasury (Australia) Weighted Average of Eight Capital Cities: All-Groups Index
Germany iBund and iBobl[11] Bundesrepublik Deutschland Finanzagentur EU HICP ex Tobacco
Russian Federation Federal loan bonds (GKO-OFZ) with a nominal value indexed by the inflation rate Ministry of Finance (Russia) Russian Federation's CPI
Greece EU HICP ex Tobacco
Hong Kong iBond (domestic retail bonds) Hong Kong Government Composite Consumer Price Index
Italy BTP€i Department of the Treasury EU HICP ex Tobacco
India Inflation Indexed Bonds[12][13] Reserve Bank of India Wholesale Price Index
Italy BTP Italia (domestic retail bonds) Department of the Treasury Italy CPI ex tobacco
Japan JGBi Ministry of Finance (Japan) Japan CPI (nationwide, ex-fresh-food)
Sweden Index-linked treasury bonds Swedish National Debt Office Swedish CPI
Brazil Notas do Tesouro Nacional - Série B / C Tesouro Nacional B: IPCA / C: IGP-M
Mexico Udibonos Banco de Mexico UDIs
Spain[14] Bonos indexados del Estado and Obligaciones indexadas del Estado[15] Tesoro Público EU HICP ex Tobacco

Inflation-indexed bond indices

Inflation-indexed bond indices include the family of Barclays Inflation Linked Bond Indices,[16] such as the Barclays Inflation Linked Euro Government Bond Indices, and the Lehman Brothers U.S. Treasury: U.S. TIPS index.[17]

See also


  1. Unfortunately, income taxes bring some inflation risk back to such bonds. See tax on the inflation tax.
  2. Shiller. "The Invention of Inflation-Indexed Bonds in Early America" (PDF)., "Both Principal and Interest to be paid in the then current Money of said STATE, in a greater or less SUM, according as Five Bushels of CORN, Sixty-eight Pounds and four-seventh Parts of a Pound of BEEF, Ten Pounds of SHEEPS WOOL, and Sixteen Pounds of SOLE LEATHER shall then cost, more or less than One Hundred and Thirty Pounds current money, at the then current Prices of said ARTICLES.
  3. Barclays Capital Research A (2008-02-20). "Global Inflation-Linked Products: A User's Guide".
  4. Frank J. Fabozzi, CFA (17 February 2003). The Handbook of Financial Instruments. John Wiley & Sons. pp. 207–208. ISBN 978-0-471-44560-9. Retrieved 1 January 2013.
  5. "Real Return Bonds". Retrieved 2006-06-30.
  6. Swinkels, L. "Emerging Markets Inflation Linked Bonds". Retrieved 2011-06-28.
  7. "TIPS In Depth". Retrieved 2006-06-30.
  8. "Series I Savings Bonds". Retrieved 2008-04-09.
  9. "OAT€is AND BTAN€is". Retrieved 2006-06-30.
  10. "Government of Canada Market Debt Instruments". Retrieved 2009-10-26.
  11. "Finance Agency: Inflation-linked securities". Retrieved 2016-11-14.
  12. . Reserve Bank of India. Reserve Bank of India Retrieved 15 November 2014. Missing or empty |title= (help)
  13. . NDTV Profit. 12 June 2014 Retrieved 15 November 2014. Missing or empty |title= (help)
  14. Moore, Elaine (2014-05-22). "Spain dives into inflation-linked bonds". Financial Times. ISSN 0307-1766. Retrieved 2016-08-12.
  15. "Subastas | Tesoro Público - Yo invierto aquí". Retrieved 2016-08-12.
  16. "Barclays Capital: Inflation Linked Bond Index".
  17. "Lehman Brothers: Global Family of Indices - Daily Returns".

External links


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