Why it is real interest rates that really matter

Russ Mould
10 August 2023

For all of the wailing and gnashing of teeth over the Bank of England’s fourteenth consecutive interest rate hike, the nominal base rate of 5.25% is still below the post-1970 average of 6.4% and the real rate of interest – adjusting for inflation – is still minus 2.65% using the consumer price index benchmark for inflation and minus 5.45% using the retail price index,” says AJ Bell investment director Russ Mould. “Where interest rates lie, in nominal and real terms, has just as profound implications for investments and portfolios as it does the wider economy. The higher they go, the less inclined an investor may be to take risks with shares and more tempted they may be to stick to the calmer waters of cash and perhaps bonds.

“The post-Great Financial Crisis environment of low inflation and low interest rates meant that investors could argue there was little or no alternative to shares, from a yield or capital gain perspective.

“But central banks’ dash to jack up interest rates and the effect of their efforts to quell inflation upon bond yields means the picture looks quite different now:

 

UK

USA

Central bank base rate

5.25%

5.50%

Real bank base rate

(2.65%)

2.50%

2-year Govt. bond yield

4.87%

4.79%

10-year Govt. bond yield

4.35%

3.98%

Equity dividend yield

4.10%

1.67%

Share buyback yield

1.87%

2.50%

Equity earnings yield

8.93%

4.17%

Source: Marketscreener, S&P Global, Refinitiv data, analysts' consensus forecasts

“The return available on cash, as defined by central banks’ base rates, and by extension the risk-free rate available on government benchmark bonds, sets the reference point by which the attractiveness, or otherwise, of all asset classes will be judged.

“In the UK, the ten-year government gilt is seen as the risk-free rate and any other investment should return more than that to compensate for the additional dangers. The higher the gilt yield goes, the less inclined, or obliged, investors will feel to pay up for alternative asset classes, such as shares (and vice-versa).

“Right now, in nominal terms, investors can get a superior yield from ten- (and two-) year government gilts than they can from equities and for less capital risk, at least if they buy at issue and hold them until redemption.

“The picture is the same in the USA, even allowing for how share buybacks contribute to total shareholder returns – in the UK, the FTSE 100’s constituents’ cash return plans here add another 1.9% to the cash yield on the index and the S&P 500’s another 2.5% or so.

“Those buybacks help to keep the total yield balance in favour of equities in the UK in nominal and real terms, while in the USA equities offer less than real interest rates and cash in the bank, once inflation is taken into account. Buybacks, however, tip the total cash yield calculation back in the favour of equities.

“This may help to explain why stock markets are proving relatively resilient in the UK and continue to barrel higher in the USA, even though interest rates are way higher than anyone expected them to be twelve months ago.

“No-one knows for sure where inflation and rates will go next – central bankers’ failed ‘transitory’ narrative for inflation in 2021 and panic to catch up with a slew of rate increases in 2022 and 2023 makes that extremely clear.

“Under such circumstances, investors could be forgiven for taking a closer look at their portfolio weightings toward bonds and even cash, relative to equities, especially as any rate cuts during the life of the bonds could mean fixed-income instruments offer potential for capital gain as well as steady coupon payments.

“Yet such a decision is not as straightforward as it looks.

Sticky inflation or, worse, a reacceleration in the rate of price increases would do little for the real value of those coupons, even if bonds offer the promise of the return of principal upon maturity. Share prices offer no such safety net and history suggests that a real gallop in inflation, especially relative to prevailing interest rate levels, does them few favours either.

“A plunge in real interest rates to deeply negative territory because inflation is soaring does not seem welcome if the experiences of UK and US investors in the 1970s is any guide, or even for that matter portfolios in 2022.

Source: FRED - St Louis Federal Reserve database, US Federal Reserve, Refinitiv data

Source: Bank of England, Office for National Statistics, Refinitiv data. Used RPI not CPI for greater longevity of inflation data.

“Equally, a sharp surge in real rates to get inflation under control brings different challenges, if the recessions and bear markets of the early 1980s on both sides of the Atlantic are indicative of what may lie ahead (and we must accept that the past is no guarantee for the future).

“Spikes into the realms whereby the prevailing Fed Funds rate ultimately exceeded inflation by two to three percentage points also caused trouble for stock markets in 2000 and 2007, but the effects were not felt immediately, and strong bull runs continued for some time in the run up to the final smash.

“One asset that loves negative real rates seems to be gold. Surges in inflation, and thus a loss of central bank control as rates lagged, added lustre to the metal in the 1970s and early 2000s, and only fierce efforts to catch up – and hold base rates well above inflation for some time – brought the metal back down to earth.

Source: FRED - St Louis Federal Reserve database, US Federal Reserve, Refinitiv data

“The return to positive real interest rates in 2023 may help to explain why gold seems to be going nowhere fast, around the $1,900-an-ounce mark, and reinforce the view of many that the precious metal is a useless, indeed barbarous, relic.

“Buyers of gold will counter by arguing that central banks’ nerve is bound to crack sooner or later and that they may have to pivot to cutting interest rates, and even more Quantitative Easing, to revive economies weighed down by massive debts and higher borrowing costs.”

Russ Mould
Investment Director

Russ Mould’s long experience of the capital markets began in 1991 when he became a Fund Manager at a leading provider of life insurance, pensions and asset management services. In 1993, he joined a prestigious investment bank, working as an Equity Analyst covering the technology sector for 12 years. Russ eventually joined Shares magazine in November 2005 as Technology Correspondent and became Editor of the magazine in July 2008. Following the acquisition of Shares' parent company, MSM Media, by AJ Bell Group, he was appointed as AJ Bell’s Investment Director in summer 2013.

Contact details

Mobile: 07710 356 331
Email: russ.mould@ajbell.co.uk

Follow us: