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The PBO is making Canadians dumber

Parliamentary Budget Officer Yves Giroux adjusts his glasses as he waits to appear before the Senate Committee on National Finance, Tuesday, October 17, 2023 in Ottawa. Photo by: The Canadian Press/Adrian Wyld

Canada’s Parliamentary Budget Officer describes itself as “a neutral, non-partisan party independent of government.” But as the ever-deepening fiasco around its analysis of the carbon tax and rebate shows, that doesn’t mean it can’t get political. Its failure to proactively disclose a major error in its analysis — and the defensive way it responded to criticism of it — shows it has clearly taken a side in this debate: its own.

In April the PBO quietly posted an update to its website noting that it had accidentally included the industrial carbon price in its much-discussed modeling of the economic impacts of the federal government’s signature climate policy. That modeling, first released in 2023, quickly became ammunition for Conservative politicians and proxies, who have used it ever since to suggest the carbon tax was actively impoverishing Canadians. If the polls are any indication, the rhetoric is working.

Even without that error — and we’ll get to it in a second — the PBO’s economic math raised some questions. The report was premised on a comparison between the carbon tax and no climate policy and implied that doing nothing imposed no costs on Canadians. In a recent column, the Globe and Mail’s Tony Keller explained why this makes no sense. “Think of rules that force car manufacturers to put airbags in new vehicles. That makes cars more expensive, which means less money in consumers’ pockets, which diminishes other spending and economic activity. Under a model that considers only the cost of airbags, and not the health benefits, an airbag mandate is an economic drag that leaves everyone worse off.”

Ironically, this flawed reasoning was eventually rejected by none other than the PBO himself, Yves Giroux. “Anything we do with respect to addressing or trying to curb climate change will have costs,” he told the Canadian Press last year. “It's either a cost to the carbon tax or regulations to reduce the use of fossil fuel. Regulations also have a cost. Doing nothing would also have costs.” Weird that he didn’t include that in his economic modeling.

The Parliamentary Budget Officer's analysis of the carbon tax and rebate has been weaponized by Conservatives to devastating effect. Now that a pretty major error has been discovered in its work, can anyone undo the damage?

Now we discover the accidental inclusion of the industrial carbon tax in his calculations, which only further muddies the already murky waters. That’s because in Alberta, Saskatchewan, Ontario, British Columbia and Quebec, the federal industrial carbon tax has never been in force. And while the PBO’s Giroux has suggested that the unintentional inclusion of the industrial carbon tax in his modeling wouldn’t meaningfully change the figures, not everyone agrees with that analysis.

According to the Canadian Climate Institute, industrial carbon pricing will be the single biggest driver of emissions reductions in Canada by 2030. It’s hard to square that with the notion that it only represents a rounding error in the PBO’s analysis. As University of Calgary economist Trevor Tombe told the Globe and Mail’s Keller, “It’s entirely possible that the industrial system has more of an impact than the consumer system. I don’t have the proof but that’s my gut reaction.”

Alas, that’s all we have right now: gut reactions. If the PBO’s modeling was made available to other economists like Tombe, they could run their own analysis here or at least better understand what informs the PBO’s. Instead, it remains shrouded in mystery — one that’s compounded by the PBO’s suggestion that it won’t update its faulty figures until the fall. Why it would take them months to remove one input from their economic model is a mystery to me, but I suppose it’s just one of many here.

There is almost no chance that the eventual reveal here will change anyone’s mind about the carbon tax and rebate. The Conservatives are committed to the idea that it’s driving up the cost of everything in our lives, facts notwithstanding, and it’s unlikely that anything short of a full repeal will change their minds. The politics around the carbon tax are mostly set in stone, and they’re ones that may well sink the federal government.

But Canadians still deserve the truth here, even if some of us aren’t prepared to listen to it. We still need to know what the Conservative alternative to a carbon tax looks like and what costs it would impose on current and future generations, even if voters decide it’s not important to them. That’s work that the PBO, by its very nature, ought to be doing. Instead, whether by accident or design, it’s running interference for the Conservatives instead. In the process, it might be sealing its own fate alongside that of the carbon tax.

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