Register For Our Mailing List

Register to receive our free weekly newsletter including editorials.

Register

27 November 2025

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

5 charts every retiree must see…

Firstlinks is sponsored by:
banner

Most viewed in recent weeks

The growing debt burden of retiring Australians

More Australians are retiring with larger mortgages and less super. This paper explores how unlocking housing wealth can help ease the nation’s growing retirement cashflow crunch.

LICs vs ETFs – which perform best?

With investor sentiment shifting and ETFs surging ahead, we pit Australia’s biggest LICs against their ETF rivals to see which delivers better returns over the short and long term. The results are revealing.

Warren Buffett's final lesson

I’ve long seen Buffett as a flawed genius: a great investor though a man with shortcomings. With his final letter to Berkshire shareholders, I reflect on how my views of Buffett have changed and the legacy he leaves.

Family trusts: Are they still worth it?

Family trusts remain a core structure for wealth management, but rising ATO scrutiny and complex compliance raise questions about their ongoing value. Are the benefits still worth the administrative burden?

13 ways to save money on your tax - legally

Thoughtful tax planning is a cornerstone of successful investing. This highlights 13 legal ways that you can reduce tax, preserve capital, and enhance long-term wealth across super, property, and shares.

Why it’s time to ditch the retirement journey

Retirement isn’t a clean financial arc. Income shocks, health costs and family pressures hit at random, exposing the limits of age-based planning and the myth of a predictable “retirement journey".

Latest Updates

Weekly Editorial

Welcome to Firstlinks Edition 639

Thank you for the hundreds of responses to our Reader Survey and to maximise the sample size, we’re leaving it open until this Sunday. Here is an overview of the results so far.

  • 27 November 2025
  • 1
Investment strategies

Where to hide in the ‘everything bubble’

It might not be quite an ‘everything bubble’ but there’s froth in many assets, not just US stocks, right now. It might be time to stress test your portfolio and consider assets that could offer you shelter if trouble is coming.

Investment strategies

The ultimate investing hack: dividend growth stocks

Investors often fall prey to ‘amygdala hijacks,’ letting emotion trump reason. By focusing on dividend-growth with stocks instead of volatile prices, you can steady your mindset and let compounding do the work. 

Investment strategies

CBA or global banks?

CBA’s recent pullback highlights single-stock risk. Global banks trade at lower P/Es with rising earnings and dividends, offering investors both income potential and long-term value beyond the local market.

Investment strategies

Global dividends rising, but Australia lags

Global dividend growth surged in the third quarter, with median growth of almost 6%. Australia was a notable exception as dividends fell, thanks to flagging mining company payouts.

Economy

I called inflation's rise and fall and here's what's next

In 2020, I warned that surging US money supply growth would spark inflation. By early 2023, I said US money supply was dropping dramatically and that meant inflation would decline. Here's what happens next.

Superannuation

Are excessive super funds giving Australia “Dutch Disease”?

The irony is profound: a system designed to secure Australians’ futures may be systematically dismantling the economic diversity necessary for long-term prosperity.

Investment strategies

Could your children pass the inheritance ‘stress test’?

You devote years of your life working, saving and investing, striving to build a legacy that will outlive you. Before any wealth moves to the next generation, here are six questions every parent should ask themselves.

Sponsors

Alliances

Site Map

About Firstlinks

© 2025 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.