Inflation: compound interest’s evil twin
We're about to see something we've not seen for a while, says Andrew Van Sickle: a nasty bout of inflation.
Get the latest financial news, insights and expert analysis from our award-winning MoneyWeek team, to help you understand what really matters when it comes to your finances.
You are now subscribed
Your newsletter sign-up was successful
Want to add more newsletters?
Twice daily
MoneyWeek
Get the latest financial news, insights and expert analysis from our award-winning MoneyWeek team, to help you understand what really matters when it comes to your finances.
Four times a week
Look After My Bills
Sign up to our free money-saving newsletter, filled with the latest news and expert advice to help you find the best tips and deals for managing your bills. Start saving today!
MoneyWeek will turn 21 in early November. It has been a busy couple of decades. We’ve been through the dotcom bubble, two commodities supercycles, the housing bubble, a once-in-a-century financial crisis, and a once-in-a-century pandemic.
We have, in short, been round the block more than a London traffic warden. But one thing we have yet to experience: a nasty bout of inflation. I wonder if we now will.
Not so transitory inflation
John explains in detail why we’re worried in this week's magazine, but the (rapidly rising) bottom line is that all the signs are there. Massive money-printing, which this time is going straight into the system rather than plugging balance-sheet holes in banks as in 2008-2009. Supply bottlenecks, skill shortages and rising raw-materials prices – a combination that points to a wage-price spiral. And, last but not least, central banks and a majority of economists insisting that inflation at multi-year highs is transitory. These would be the same central banks and majority of economists that failed to see the financial crisis coming.
MoneyWeek
Subscribe to MoneyWeek today and get your first six magazine issues absolutely FREE
Sign up to Money Morning
Don't miss the latest investment and personal finances news, market analysis, plus money-saving tips with our free twice-daily newsletter
Don't miss the latest investment and personal finances news, market analysis, plus money-saving tips with our free twice-daily newsletter
It may not be long now before we start to notice the price of items we buy regularly tick up. We all have our own everyday inflation gauges. Mine is the Peppermint Aero. I remember that a bar cost me 22p in 1988. Now it sells for 60p. The Bank of England’s inflation calculator, by far the most interesting thing on the website, suggests that this is right: £22 in 1988 was £60 in 2020. Prices have almost tripled.
The annual average rate since 1988 has been 3.2%, which doesn’t sound too bad. But apply that for 33 years and look what happens. Nudge it up to 5%, and money depreciates much faster. At that rate, £100 shrinks to £36 in 20 years. Inflation is compound interest’s evil twin.
So keep an eye on your favourite cereal, chocolate bar or wine brand. Watch out for “shrinkflation” too. Sometimes the price stays the same but the package gets smaller. I seem to recall that the 1988 Aero bar was a tad longer. I couldn’t swear to it, but I do know for sure that only a few years ago, Cadbury’s used to sell six Creme Eggs in a package; now there are five.
Where does this all lead (beyond Creme Eggs in packs of four)? It’s becoming ever clearer that central banks have no intention of squeezing inflation out of the system. They have subtly raised the bar on what they say they need to see or anticipate from inflation before they stop printing money via quantitative easing or raise interest rates. We hear repeatedly that inflation should be temporary, and they will look through it. They suggest they will tolerate above-target inflation for longer than they have in the past. This spring the US Federal Reserve changed its official inflation target from 2% to an average of 2% “over time”. Two weeks ago the European Central Bank shifted its inflation target upwards too. It now aims to achieve inflation of 2% over the medium term, whereas before it tried to keep inflation below but close to 2%.
Interest rates can’t rise
The direction of travel is clear. The aim is to inflate away the world’s huge debt load – much of it caused by central banks keeping interest rates too low for too long, of course. A big jump in interest rates would cripple the global system.
Bond yields remain historically low, as investors apparently assume that the disinflationary environment of the past 40 years will endure indefinitely. And central banks have bought up a huge chunk of the bond market with printed money, which also keeps yields low. The upshot? We are in for years of yields staying below inflation, which is excellent news for gold. If rates do eventually rise in an environment of out-of-control inflation, it will benefit too. I will be topping up my gold today – just as soon as I finish my 60p Aero.
Get the latest financial news, insights and expert analysis from our award-winning MoneyWeek team, to help you understand what really matters when it comes to your finances.

-
Should you buy an active ETF?ETFs are often mischaracterised as passive products, but they can be a convenient way to add active management to your portfolio
-
Power up your pension before 5 April – easy ways to save before the tax year endWith the end of the tax year looming, pension savers currently have a window to review and maximise what’s going into their retirement funds – we look at how
-
"Botched" Brexit: should Britain rejoin the EU?Brexit did not go perfectly nor disastrously. It’s not worth continuing the fight over the issue, says Julian Jessop
-
'AI is the real deal – it will change our world in more ways than we can imagine'Interview Rob Arnott of Research Affiliates talks to Andrew Van Sickle about the AI bubble, the impact of tariffs on inflation and the outlook for gold and China
-
Tony Blair's terrible legacy sees Britain still sufferingOpinion Max King highlights ten ways in which Tony Blair's government sowed the seeds of Britain’s subsequent poor performance and many of its current problems
-
How a dovish Federal Reserve could affect youTrump’s pick for the US Federal Reserve is not so much of a yes-man as his rival, but interest rates will still come down quickly, says Cris Sholto Heaton
-
New Federal Reserve chair Kevin Warsh has his work cut outOpinion Kevin Warsh must make it clear that he, not Trump, is in charge at the Fed. If he doesn't, the US dollar and Treasury bills sell-off will start all over again
-
How Canada's Mark Carney is taking on Donald TrumpCanada has been in Donald Trump’s crosshairs ever since he took power and, under PM Mark Carney, is seeking strategies to cope and thrive. How’s he doing?
-
Rachel Reeves is rediscovering the Laffer curveOpinion If you keep raising taxes, at some point, you start to bring in less revenue. Rachel Reeves has shown the way, says Matthew Lynn
-
The enshittification of the internet and what it means for usWhy do transformative digital technologies start out as useful tools but then gradually get worse and worse? There is a reason for it – but is there a way out?