Nearly every major central bank targets 2% inflation, forever. The target exists because of what breaks without it. And what breaks tells you exactly what’s being kept alive.
Why 2%, and why forever
In our system, money is loaned into existence. When a bank writes you a mortgage, it creates a new deposit in your account rather than handing over someone else’s savings, and that deposit is new money. When loans are repaid, that money disappears again. When they go bad, the loss eats the bank’s own capital instead, and the bank stops lending, which does the same thing to the money supply. So the money supply is the running total of outstanding credit, plus whatever the central bank creates directly when it buys bonds. If all the loans were somehow repaid at once, there’d be almost no money left.
The second fact is that nearly all debt is nominal. The pound amount you owe is fixed no matter what prices do. If prices and wages fall, your £1,200 monthly mortgage payment doesn’t fall with them. It just takes a bigger bite of a smaller income. The rate might be cut. The £180,000 you owe won’t be.
A system built out of those two facts can’t tolerate broadly falling prices, because falling prices make those fixed debts heavier right across the economy at the same time. So the system needs prices to rise gently and forever, not fast enough to cause panic and a rush to get out of the currency, just enough that the real weight of the debt erodes a little each year and not enough people organise against it. Two percent is that number. Small enough to feel like weather. Large enough to do the work. Compound it and it halves the purchasing power of savings roughly every 35 years, and takes about 60% of it across a full working life, and almost nobody notices it happening.
Technology explains the “forever”. It makes the job harder every year. The natural state of a free market is deflation. As tools improve, the same goods take fewer inputs to make, so prices should fall. Call it 1% to 5% a year, and accelerating as software and AI spread into everything. So the true baseline isn’t zero. Picture the top of that range. You’re standing on a moving walkway that runs backwards at five steps a minute. To stand still you have to walk forward at five. To show plus two on the board, you have to walk at seven. In a technologically deflating world, a 2% target is a standing commitment to create enough new money and credit to swallow the whole productivity gain, and then push prices two points beyond that. And because the technology compounds, the offsetting money creation has to compound too. That’s why the target can never be hit once and then put away. Missing it low is treated as an emergency. Missing it high is called “transitory”.
Why do they nearly all land on the same number? Every major economy runs the same design, money loaned into existence against fixed nominal debts, so every one of them has the same allergy to falling prices. Nobody defects alone for free, either. If your neighbours inflate at two and you hold at zero, your currency strengthens, your exporters complain, and your politicians hear about it. It’s a race to debase, to cut what the currency buys before your neighbour does, and the club of major central banks moves together. Switzerland comes closest. It targets below two, and it has spent the better part of two decades creating francs to stop its currency rising. Defecting cost it a central bank balance sheet bigger than the country’s economy. And the target normalises itself. Once 2% is officially defined as “price stability”, money losing value every year becomes health by definition, and the question of who collects the difference almost never gets asked out loud.
One footnote, and I’m stepping outside the argument’s own ground here, so hold it loosely. The 2% number has a famously thin pedigree. It surfaced in New Zealand’s policy reforms in the late 1980s and spread through the 1990s by imitation. Nobody derived it from first principles. The welfare arguments were built afterwards, to fit a number that was already in place. It was a number the debt structure could live with, and then the measure became the goal. The respectable version of the argument is that 2% buys room to cut rates before they hit zero. Ask what the room is for, and you arrive back at the cascade.
What actually breaks when prices fall
A café owner with a £150,000 business loan, a nurse with a mortgage, both customers of the same bank. Prices start falling broadly, say 4% a year.
1.Takings fall
The café’s menu prices are its income. When prices fall, its takings fall with them. Its ingredients get cheaper too, and eventually its wage bill. One thing doesn’t move: the loan payment.
2.Wages follow
The owner can’t pay yesterday’s wages out of today’s smaller takings, so hours get cut, then jobs, then pay. Wages are sticky. They fall slower than prices, but in a debt-heavy economy they follow. The nurse’s pay gets frozen while her mortgage payment stays fixed. Notice what the falling prices are doing for her. Her frozen pay buys a little more each year, so on everything except the mortgage she’s actually getting better off. The falling prices were never her problem. The fixed payment is. Everything else in her life shrinks around it, its real weight climbing while the number on it stands still, and when her pay finally follows prices down, it’s the payment that breaks her.
3.The first missed payment
The fixed payment now takes a bigger share of a shrinking income. Say the café’s takings drop 8% over two years while the loan payment doesn’t budge. The owner did nothing reckless. The arithmetic stopped working. The debt got heavier without anyone borrowing another pound. That’s the first missed payment, and the same arithmetic is hitting millions of borrowers at once, because the price fall is economy-wide.
4.The bank eats the loss
A loan is the bank’s asset. What a bank owns is mostly promises of repayment, and what it owes is mostly deposits. Between the two is a thin cushion of the bank’s own capital, a few pounds for every hundred lent out. So the bank doesn’t need everyone to default. If something like five pounds in every hundred goes bad, the cushion is gone and the bank is insolvent, meaning it owes more than it can pay. Falling collateral prices make it worse, because the house the loan is secured on is now worth less than the loan.
5.Credit gets pulled
The wounded bank defends itself the fastest way it can. It stops making new loans, refuses to renew old ones when they come due, and withdraws credit lines from businesses that were healthy. A builder who depends on short-term borrowing finds the line cancelled once property prices start slipping. Sound firms start failing with their customers still there, because their funding isn’t.
6.The money supply itself shrinks
Money is created by lending, so when new lending stops while old loans keep being repaid, deposits are destroyed with nothing replacing them, and the total amount of money in the economy contracts. Less money chasing goods pushes prices down further. Which makes the remaining debts heavier still. Which causes more defaults, more bank losses, less lending, less money. The loop feeds itself. Economists call it a deflationary spiral, but it’s the same arithmetic going round and round, each turn tighter.
7.Banks stop trusting banks
The same freeze runs at the top of the chain. Each bank knows the others are sitting on the same kind of losses, so they stop lending to each other. In 2008 even fully collateralised letters of credit, the bank guarantees that stand behind payments in trade, froze for days. Containers sat on docks because no bank would accept another bank’s promise. That’s what the cascade looks like at the top of the chain. World trade stalling because the web of promises seized up.
8.The state steps in
Faced with that sequence, authorities step in, crisis after crisis. They rescue banks, create money and change rules, because the alternative is the whole debt pyramid being written down all at once. The 2% target exists so this sequence never gets started. Central bankers can read the sequence as well as anyone. They’re standing between an economy loaded with fixed nominal debt and the arithmetic above.
Everything above is the debt structure’s reaction to falling prices, not a property of falling prices themselves. Prices falling because production got more efficient, in an economy that isn’t borrowed up to the ceiling, is simply your money buying more each year. The catastrophe needs the borrowing. People survive falling prices. A system built out of nominal debt doesn’t.
What “a little inflation is good for growth” is keeping alive
The official story says that without inflation, people delay purchases, demand dies, and the economy stalls. Yet you buy a phone, a winter coat, tonight’s dinner, even though next year’s version will be better or cheaper, because you need or want them now. Electronics have fallen in price for decades and people queue overnight for them. What does get deferred is the marginal, low-value purchase. That’s trimming waste, not collapse. No saver’s life gets worse because the money they put aside buys more later.
So if it isn’t household spending being kept alive, what is? Follow the mechanics, and watch who collects.
The debt stack itself. Inflation quietly shrinks the real weight of every fixed debt, so the biggest borrowers, governments and leveraged asset owners, repay in pounds that buy less than the pounds they borrowed. It’s a default that never needs announcing.
The banks. Rising nominal prices and incomes keep loan books performing, the loans getting repaid on time, and collateral values up. The cascade runs in reverse. Gentle inflation is the loan book’s weather system.
The state’s funding lever. Creating money raised far more than taxing could have. The clearest figures are American, and the British version is the same shape at a smaller scale. In 2019 the entire profit of corporate America was about 2.25 trillion dollars. Covid-era money creation ran at roughly 5 trillion a year. You couldn’t reach that by taxing profits at 100%. Inflation is the tax that never needs a vote.
Asset owners, first in line. New money enters through financial markets and reaches asset prices before it reaches wages. Whoever owns houses and shares gets the uplift early, and whoever earns a salary pays the higher prices later. That ordering, repeated for decades, sits underneath the inequality story people argue about while blaming each other.
And last, the weakest claims on anything real. Zombie firms that only survive on cheap credit, and the jobs that exist to administer the distortions.
The growth claim has an invoice. In the two decades to around 2020, the world added roughly 185 trillion dollars of new debt to get about 46 trillion of measured growth. Four borrowed for each one gained, and each new unit of debt buys less growth than the ones before it. That’s the appearance of growth, rented at compounding cost.
And the real price is the one that never appears on the invoice. Measured from zero, 2% looks tiny. Measured from the correct baseline, it’s the whole gap. Technology should have been cutting your cost of living by a few percent a year. Instead prices rose two. The official productivity figures don’t show that, because they count what gets paid for, and most of what technology delivered stopped being paid for. The difference, the fall you never received plus the rise you paid, is the productivity gain that technology handed the system, year after year. In a free market that gain would have reached you as lower prices. Instead, governments and banks created enough new money to stop prices falling. The rising money supply swallowed the benefit of cheaper production and delivered it to the borrowers and asset owners above. You worked just as hard. Machines made the things in your basket cheaper to produce. Your weekly shop never got cheaper. That’s the theft. And it’s why I say inflation is wage deflation read from the other side of the ledger.
“Deflation caused the 1930s, look at Japan.” Those were debt deflations, that same cascade, collapses of overleveraged credit systems. They show what happens when a debt-based system meets falling prices. They say nothing against prices falling from productivity in a system not built on leverage. Citing them for the 2% target is citing the disease as the case for the medicine that builds it.
“Wages fall in deflation too, so workers gain nothing.” They do, but slower than prices, because wages are sticky. In productivity deflation that stickiness works for the median worker, whose pay drifts down slowly while the cost of living falls faster, so real income rises without constant renegotiation. Under inflation the same stickiness works against them. We’ve watched wages lose to house prices for 40 years.
It takes a continuous transfer from savers and wage earners to keep the debt structure standing. Growth is the story. Solvency is the function. The 2% target is a solvency policy for a system that would unravel once prices were allowed to do what technology wants them to do, which is fall.
The arithmetic needs no villains. A central banker who allowed the purge, who raised rates and let the defaults run, would cause mass unemployment, be blamed for a depression, and would not be allowed to finish. Volcker came closest in 1980. Even he only raised rates, and the debt he was crushing sat on private balance sheets, not the state’s. Nobody gets to run that experiment from here. The system selects the behaviour. Indict the design, not the people operating inside it. They can’t step outside it. You can.