Register For Our Mailing List

Register to receive our free weekly newsletter including editorials.

Home / 196

Interest rate duration: how exposed are you?

It is no secret that Federal Reserve Chair Janet Yellen is preparing the market for higher interest rates, but how many investors and their advisers know how exposed their portfolios are to meaningfully higher interest rates?

We have been doing the client rounds lately and have been taken aback by how intimidated some clients seem to be by the world of fixed income, and particularly the notion of interest rate duration. Eyebrows rise when we walk them through the potential impact of higher interest rates.

The effect of a general rise in interest rates is straightforward. A bond’s interest rate duration is a measure of its price sensitivity to changes in interest rates. The greater the time to maturity, the longer it takes to receive all the coupons and principal back, and hence generally the more exposed to a change in market interest rates.

A simple way to think about duration

If a bond has a duration of five years, for example, for every 1% move in the nominal level of market interest rates, its price will move by about 5%. In other words, if market interest rates were to rise by approximately 3%, the capital value of the bond would fall by around 15%.

To take the issue of interest rate duration to the next level, and indeed to start to apply some magnitude, it is important to understand how low interest rates are around the world:

There have been some shorter-term peaks and troughs, but the long-term trend has been going down for decades. Market interest rates went negative in Japan and Germany, and some parts of their interest rate curves still are. However, we now think that we have seen the inflection point in this long-term trend.

The US is a good example. For the better part of a decade, official US rates have been at or below 1%. For a considerable part of this period, the Federal Reserve was injecting huge amounts of liquidity into the system via their quantitative easing program. So, will a more normalised level for US rates longer term be at a lower peak than previous as most of the market is expecting today? Or with the enormous amount of stimulus that has been injected into the US economy over the past eight years, could the peak in the next cycle be notably higher than the market is currently expecting?

Note that prior to the GFC, official US rates peaked at 5.25%, over 4% above where they are today. Additionally, in the 20 years prior to the 5.25% peak, official US rates still averaged just under 5%.

On-the-ground concern about inflation

When we talk to US companies, for the first time in a while we are hearing management report that they are competing for staff and this is pushing up wages. Unemployment in general is low and we are well into the recovery in the US housing market.

Additionally, for years now many US companies have been borrowing at very low rates, in some cases less than 3%, and sometimes with time horizons as long as 10 to 15 years. They are investing that capital back into their businesses, often with the objective of earning around 10-20% type returns or higher.

All of these points will likely feed into growth and inflation over time, suggesting that interest rates should move materially higher in the US in the medium to longer term. This potentially has significant implications for interest rate securities, especially those with meaningful duration.

At PM Capital, we have in effect removed all interest rate duration from our portfolios. This should avoid material negative capital falls due to higher rates, but also, as rates rise over time, the floating rate yields on the securities we own will ratchet up.

Investors should find out the interest rate duration of their fixed income portfolio. Only then can they make a proper assessment as to whether, in a rising interest rate environment, their investments are positioned to deliver the outcomes they are expecting.

 

Jarod Dawson is Director and Portfolio Manager at PM Capital. This article is general information that does not consider the circumstances of any individual.

  •   30 March 2017
  • 1
  •      
  •   

RELATED ARTICLES

Duration: Friend or foe in a defensive allocation?

Red pill or blue pill? Navigating the matrix of fixed income

Fixed income investing when rates are rising

banner

Most viewed in recent weeks

The strange effect of the 30% minimum capital gains tax

The 30% minimum tax on capital gains sits at the heart of the budget's proposed reforms. Yet the mechanics reveal anomalies that introduce unexpected distortions that raise questions about its design.

High quality businesses are on sale

Beneath the dominance of the ASX's largest stocks, much of the market has been left behind. High-quality companies are now trading at levels rarely seen, offering opportunities for investors willing to look deeper.

Does your will qualify for the discretionary testamentary trust exemption?

Treasury has confirmed the exemption many families were hoping for. But buried in the fine print are two conditions that could leave some wills on the wrong side of the exemption, despite years of careful planning.

Ranking three common retirement strategies

The defining challenge of retirement isn't just about building wealth, it's about converting your lifetime savings into sustainable income. A holistic understanding of different strategies can improve long-term outcomes.

Welcome to Firstlinks Edition 667 with weekend update

The downfall of the giant and three lessons for investors.

  • 18 June 2026

Why Australian shares are falling behind the world

Australia’s market boasts a long record of outperformance, but recent results tell a different story. Is the ASX’s lagging performance a temporary setback or evidence that structural forces will keep global markets ahead?

Latest Updates

Superannuation

Are you making these SMSF mistakes?

After four decades advising investors, there are a few common mistakes I've seen SMSF investors make. From holding too much cash and chasing yield to overtrading and trusting tips. Are these errors costing you?

Retirement

Retirement spending is not one-size-fits-all

New data challenges the idea that Australians are underspending their super. The bigger issue may be helping retirees navigate complexity, make confident decisions and use their savings to support security, wellbeing and choice.

Taxation

The missing link in the CGT debate

A little-noticed consequence of Labor’s tax changes could have implications well beyond investors’ tax bills. The issue raises bigger questions about incentives, capital allocation and the drivers of long-term economic growth.

Investment strategies

The surprising beneficiaries of the AI boom

While markets obsess over AI winners, a larger, more predictable growth engine is forming. A surge in electricity demand and infrastructure build‑out reveals the quiet, durable assets evolving beneath the AI story.

Superannuation

When losses in super become irreplaceable

The notion of 'you can afford more risk' assumes that losses can be replaced. Above a $2.1 million super balance the law says otherwise, and a worked example shows the refill takes decades, or never happens.

Retirement

Why I object to ‘hitting a number’ for retirement

Many investors dream of “hitting their number” and walking into retirement. But what if reaching that milestone is the moment they should be asking the tough questions? After all, there's a lot more to life than a high portfolio value. 

Planning

Does your will qualify for the discretionary testamentary trust exemption?

Treasury has confirmed the exemption many families were hoping for. But buried in the fine print are two conditions that could leave some wills on the wrong side of the exemption, despite years of careful planning.

Sponsors

Alliances

© 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.