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 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.

Four best-ever charts for every adviser and investor

In any year since 1875, if you'd invested in the ASX, turned away and come back eight years later, your average return would be 120% with no negative periods. It's just one of the must-have stats that all investors should know.

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.

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.

Our experts on Jim Chalmers' super tax backdown

Labor has caved to pressure on key parts of the Division 296 tax, though also added some important nuances. Here are six experts’ views on the changes and what they mean for you.        

Latest Updates

Retirement

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".

Financial planning

How much does it really cost to raise a child?

With fertility rates at a record low, many say young people aren’t having kids because they’re too expensive. Turns out, it’s not that simple and there are likely other factors at play.

Exchange traded products

Passive ETF investors may be in for a rude shock

Passive ETFs have become wildly popular just as markets, especially the US, reach extreme valuations. For long-term investors, these ETFs make sense, though if you're investing in them to chase performance, look out below.

Shares

Bank reporting season scorecard November 2025

The Big Four banks shrugged off doomsayers with their recent results, posting low loan losses, solid margins, and rising dividends. It underscores their resilience, but lofty valuations mean it’s time to be selective. 

Investment strategies

The real winners from the AI rush

AI is booming, but like the 19th-century gold rush, the real profits may go to those supplying the tools and energy, not the companies at the centre of the rush.

Economy

Why economic forecasts are rarely right (but we still need them)

Economic experts, including the RBA, get plenty of forecasts wrong, but that doesn't make such forecasts worthless. The key isn't to predict perfectly – it's to understand the range of possibilities and plan accordingly.

Strategy

13 reflections on wealth and philanthropy

Wealth keeps growing, yet few ask “how much is enough?” or what their kids truly need. After 23 years in philanthropy, I’ve seen how unexamined wealth can limit impact, and why Australia needs a stronger giving culture.

Sponsors

Alliances

© 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.