Register For Our Mailing List

Register to receive our free weekly newsletter including editorials.

Register

5 November 2026

Home / Caveat Emptor

Inflation linked bonds

Question from Douglas

Do long dated inflation linked bonds help the investor in a rising interest rate environment?

 

Answer from Elizabeth Moran, Director of Education and Fixed Income Research, FIIG Securities

The simple answer is yes, insofar as the Reserve Bank of Australia (RBA) uses its control of interest rates as its primary mechanism to control inflation, so interest rates should only rise if inflation is rising.

Principal and interest on inflation linked bonds are linked to inflation (as measured by the Consumer Price Index, or CPI), so the value of these assets will increase as inflation rises.

As an example, the Sydney Airport Finance capital index bond maturing in November 2020 is currently yielding a quarterly coupon of CPI plus 4.65%. If CPI averages 2.50% (which is the middle of the RBA target band) over the remaining life of the bond, this bond will yield 7.15%. However, if inflation rises at some stage over the life of the bond, and averages 3.50% over that period, that directly translates into an additional 1% annual return on the bond, increasing the yield to 8.15%.

  •   4 December 2013
  • 2
  •      
  •   
2 Comments
Esther
December 09, 2013

Hi

How do i buy into Sydney Airport Finance capital index bond? are these Bonds registered in ASX??

thanks heaps!

Warren Bird
December 09, 2013

The more complex answer is that it depends on your time frame. Inflation linked bonds, like nominal bonds, fall in price for a while when yields rise. Whatsmore, inflation-linked bonds are longer duration* than nominal bonds of the same final maturity date, so the capital price impact is going to be greater.

Of course, as I harp on about a lot, for an investor in a portfolio of bonds who correctly looks at their investment for a time horizon similar to the duration of the portfolio, this needn't put you off. The rising real yield means that maturing linkers can get reinvested into the market at those higher real yields. A fall in bond prices is never permanent - every inflation linked bond will mature at an inflation-adjusted value of 100.

But if you have a shorter term time horizon than that, then inflation linked bonds might not be suitable for capital preservation. Every investor is different and needs to talk to their planner about their needs.

It's possible for nominal yields to rise while the real yield on an indexed bond to remain unchanged. That happens when the market simply pushes up bond yields because of higher inflation expectations. That's a great outcome for holders of inflation linked bonds as they get a lift in the nominal value of their assets and their interest payments due to the higher inflation. But it's rare and usually you get some increase in the real yield as well when nominal yields rise.

In the current climate the big fear that many people have is that real yields will return to 'normal' (whatever that is these days!) In which case, most of any increase in market yields is likely to be almost fully reflected in real yields. This has already happened to some extent over the past year or so as bond yields have risen from their very, very low levels of mid-2012. Inflation linked bonds have pretty much fully reflected this increase, and the longer duration means that their total return has been well below that of nominal bonds.

I don't want any of that to put people off buying inflation-linked bonds, because they are a suitable investment for many long term portfolios. But please do understand that there's more to them than just 'inflation up, bond value and interest up', so that you aren't surprised or disappointed at the short term fluctuations.

There are a few brokers around, like Curve Securities or FIIG, who can source Sydney Airport inflation linked bonds, and other fixed interest assets for clients who have 'wholesale' amounts of money to invest.


* see my Cuffelinks article http://cuffelinks.com.au/term-deposit-investors-did-not-understand-the-risk/ for an explanation of duration risk. It's not as scary as many think!

 

Leave a Comment:

RELATED ARTICLES

Bonds have a role in managing inflation risks

Australia joins the PIIGS

The hidden cost of government debt for investors

Firstlinks is sponsored by:
banner

Most viewed in recent weeks

It’s time for LICs to die

A high-profile dividend cut and a prominent fund manager’s apology have reignited a long-running debate. If investors can access similar exposures more cheaply and efficiently elsewhere, what exactly is keeping LICs alive?

The retirement scorecard: how many of these questions can you answer?

From the maths of retirement, estimating spending and picking the right asset allocation to survive a poor decade, here are the questions every retiree – current or future – should be able to answer for themselves.

Division 296: the initial moves to make before the windows close

What if the best superannuation strategy isn't about earning more, but acting before your options disappear? Several overlooked planning windows are narrowing, with consequences that can last for decades.

Testamentary trusts: Treasury has picked the wrong reading

A decades-old estate planning tool has survived one tax crackdown only to be caught by another. The surprise isn't who the reform is targeting, but who could end up paying the price for drafting choices made years ago.

Higher yields are creating opportunities in global bonds

Bond markets are adjusting to a new reality, but not in the ways investors expect. With markets repricing and capital competing for attention, investors may need to rethink where resilience and opportunity lie. 

Will investors be better or worse off under new housing tax changes?

Housing tax reforms have sparked warnings of market turmoil and promises of greater fairness. But after modelling nearly two decades of property data, the results suggest winners and losers may not be who many investors expect.

Latest Updates

Superannuation

Superannuation’s structural failings

Politicians are fighting over access to super, but they may be arguing about the wrong thing. The system’s three fundamental flaws have been hiding in plain sight for decades, costing Australians far more than they realise.

Planning

The great wealth transfer myth

Why do some families preserve wealth for generations while others struggle to? As the great wealth transfer unfolds, the determining factor is often not the structure of the estate, but the preparation of those who will inherit it.

Investment strategies

What comes after bank hybrids?

For years, bank hybrids have been a cornerstone of portfolio income. With tens of billions of dollars now disappearing from the market, investors face a critical question: what comes next, and are the obvious replacements enough?

Investment insights from the US

What happens when knowledge becomes a commodity? The latest themes emerging from the US tech sector suggest AI could reshape company moats, disrupt incumbents and create winners and losers in unexpected places.

Investing

Can Berkshire thrive without Buffett?

Warren Buffett's departure marks the end of an era. But the more important question for investors is whether Berkshire's culture, discipline and capital allocation framework can survive without the man who built them.

Retirement

The Bengen 4% Rule: Lost in translation

For years, retirees have been told to focus on withdrawal rates. But the real question is far simpler: how many dollars can you safely spend? The answer may be very different from what conventional retirement wisdom suggests.

Interest rates

Super low interest rates came with side effects

For more than a decade, investors lived through an era of near-zero interest rates. With bond yields now surging, it's worth asking whether cheap money solved economic problems, or introduced a much larger set of risks.

Sponsors

Alliances

  • ASA-Logo-RGB-ActiveGreen-web.png

Site Map

About Firstlinks

© 2026 Morningstar, Inc. All rights reserved.

Disclaimer
The data, research and opinions provided here are for information purposes; are not an offer to buy or sell a security; and are not warranted to be correct, complete or accurate. Morningstar, its affiliates, and third-party content providers are not responsible for any investment decisions, damages or losses resulting from, or related to, the data and analyses or their use. To the extent any content is general advice, it has been prepared for clients of Morningstar Australasia Pty Ltd (ABN: 95 090 665 544, AFSL: 240892), without reference to your financial objectives, situation or needs. For more information refer to our Financial Services Guide. You should consider the advice in light of these matters and if applicable, the relevant Product Disclosure Statement before making any decision to invest. Past performance does not necessarily indicate a financial product’s future performance. To obtain advice tailored to your situation, contact a professional financial adviser. Articles are current as at date of publication.
This website contains information and opinions provided by third parties. Inclusion of this information does not necessarily represent Morningstar’s positions, strategies or opinions and should not be considered an endorsement by Morningstar.