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William Robson is chief executive officer of the C.D. Howe Institute.

Suddenly, inflation is in the news. In Canada and abroad, spending is surging and COVID-impaired production is struggling to keep up. Key commodities – oil, lumber and metals – are expensive.

It is front-of-mind in financial markets as well. The yield on the federal government’s 30-year bonds, which was below 0.9 per cent last August, topped 2.0 per cent last week – well above its pre-pandemic level.

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Do these headlines and fears represent overreactions to rogue statistics and possible minor tactical shifts by central banks? Or is something more fundamental happening? Will politicians who won’t stop spending more than they tax end up forcing central banks to print money to cover the difference?

Current indicators and worries could be blips. Canada’s economy, like the U.S. counterpart, is growing faster than expected. So the Bank of Canada and the U.S. Federal Reserve are revising their projections for when inflation will get back to their targets – and bond traders are bringing forward their expectations for increases in the central banks’ policy interest rates.

Moreover, higher readings on the consumer price index are guaranteed over the next few months – a “base effect” as prices depressed by the pandemic in 2020 boost the year-over-year measures. We will see CPI increases of 3 per cent this year. The question is, what next? A return to 2 per cent in 2022? Or further increases – to 5 per cent or more?

Seriously higher inflation would be quite a reversal. It is 40 years since central banks, led by the Fed, squeezed inflation down from the double-digit rates of the 1970s to the single-digit rates of the 1980s. Almost 30 years since inflation targets, adopted first by the central banks of New Zealand and Canada, ushered in the era of 2-per-cent inflation. And more than 10 years since the financial crisis of 2008-09 opened a decade when central banks often undershot their inflation targets. Why might now be different?

Now might be different because politics now is different. Big moves in inflation – up to double digits in the 1970s and down again in Canada and other major democracies, or more extreme examples, such as the hyperinflations in Germany in the 1920s, Greece in the 1940s and Zimbabwe in the 2000s – do not happen because central banks make tactical errors. They happen because of government choices.

When the long post-war boom flagged in the late 1960s, governments reacted to discontent about slower growth by borrowing to boost spending, and central banks reacted to upward pressure on interest rates with easy monetary policy. When the resulting inflation became a political issue, central banks brought it back down. Inflation targets were political: the numerical goal itself, and elected governments giving central banks the tactical independence they needed to hit it.

Politics now might be different because high inflation happened so long ago that we have forgotten that it is so unpleasant that we endure recessions to end it. Politics now might also be different because of advocates claiming that government deficits financed by central banks can get our economies back to – or even beyond – where they were before COVID-19 hit.

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Most economists believe that governments can use their budgets to moderate booms and busts and most economists believe that central banks can affect money growth to the same end. But advocates invoking “modern monetary theory” go further. They claim governments can spend more than they tax, make central banks cover the difference by buying their debt with newly issued money and stop just before inflation takes off.

Yes, but ... If governments using their central banks to cover the gap between what they spend and what they tax were willing to cut spending and raise taxes to close that gap just when the theory says they should, the hyperinflations of Germany, Greece and Zimbabwe would never have happened. Nor would less extreme cases, such as Canada’s inflation of the 1970s.

The problem is that, at any given moment, closing the budget gap can be more politically painful than leaning on the central bank to help. Yields on the federal government’s bonds are almost double what its Fall Economic Statement – which emphasized that low interest rates make its heavy borrowing affordable – projected for this year. If that continues, which will be louder: the calls for governments to issue less debt? Or the calls for central banks to buy more?

In this uncertain environment, the Bank of Canada and other central banks will inevitably undershoot and overshoot their inflation targets at times. But whether inflation of 5 per cent or more is back, the answer to that question is political.

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