The most important paragraph in the IMF World Economic Outlook

68 words of wonkishness.

The IMF's World Economic Outlook (pdf) – a 230-page tome detailing predictions on nearly every aspect of the world's economy collated by the international organisation – always gets attention for the calls it makes.

The October edition downgrades expected global growth for 2013 from 3.9 per cent to 3.6 per cent, and also cuts predictions for China (down to 8.2 per cent for 2013), the US (expected to grow by 2.1 per cent in 2013, down from 2.3 per cent in July's prediction) and the UK (now expected to grow by just 1.1 per cent next year, and to contract by 0.2 per cent this year).

But the predictions are not the most important passages in this edition of the Outlook. Those are found in a short box-out titled Are We Underestimating Short-Term Fiscal Multipliers?

The fisc§al multiplier is the effect government spending has on GDP. Money spent by the government doesn't disappear – it is respent, again and again. If a teacher gets a pay rise, their consumption is likely to rise in line with it; if all teachers get pay rises, that increase in consumption may be enough to affect the aggregate demand in the economy. In an economy which isn't being stretched to its limits – that is, one without full employment, or serious capital equipment shortages – that increase in aggregate demand will result in an increase in GDP.

The existence of the fiscal multiplier is a matter of fact, but the magnitude of it is contested. And that's where the IMF enters the scene, on page 42:

The main finding, based on data for 28 economies, is that the multipliers used in generating growth forecasts have been systematically too low since the start of the Great Recession, by 0.4 to 1.2, depending on the forecast source and the specifics of the estimation approach. Informal evidence suggests that the multipliers implicitly used to generate these forecasts are about 0.5. So actual multipliers may be higher, in the range of 0.9 to 1.7.

Emphasis mine. When deciding how much to spend, governments have been assuming that every pound they spend increases GDP by 50p – but it may increase it by as much as £1.70.

The reason this is so very important is that fiscal multiplier is usually appealed to not when deciding how much to spend, but how much to not spend. When governments are planning austerity packages, they have to be wary of the fact that large cuts to government spending will inevitably cause a decrease in output, and so they either have to be prepared to take that hit, or come up with a reason why slashing spending will cause an increase in output through some other mechanism.

That is easy enough to do if you are trying to account for a fiscal multiplier of 0.5: you can make the arguments, which Osborne and Cameron rehearsed repeatedly, that the public sector is crowding out the private; that the government spending which is being cut is particularly inefficient; or that the confidence fairies will reward your thriftiness with growth.

When there is the chance that the fiscal multiplier is three times that, austerity becomes much more likely to involve damaging drops in output.

There was once a time when the government pegged its credibility to that of the IMF – back when George Osborne was proud about Britain's credit ratings, and the international community was behind his plans. Those days are gone, and have been since Christine Lagarde made her own attack on austerity. But the economists at the treasury may be more inclined to listen to the wonkish findings of the World Outlook than the political interventions of the fund's leader. We can only hope they are prompted to re-do the sums.

The IMF headquarters. Photograph: Getty Images

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

Photo: Getty Images
Show Hide image

No, IDS, welfare isn't a path to wealth. Quite the opposite, in fact

Far from being a lifestyle choice, welfare is all too often a struggle for survival.

Iain Duncan Smith really is the gift that keeps on giving. You get one bile-filled giftbag of small-minded, hypocritical nastiness and, just when you think it has no more pain to inflict, off comes another ghastly layer of wrapping paper and out oozes some more. He is a game of Pass the Parcel for people who hate humanity.
For reasons beyond current understanding, the Conservative party not only let him have his own department but set him loose on a stage at their conference, despite the fact that there was both a microphone and an audience and that people might hear and report on what he was going to say. It’s almost like they don’t care that the man in charge of the benefits system displays a fundamental - and, dare I say, deliberate - misunderstanding of what that system is for.
IDS took to the stage to tell the disabled people of Britain - or as he likes to think of us, the not “normal” people of Britain -  “We won’t lift you out of poverty by simply transferring taxpayers’ money to you. With our help, you’ll work your way out of poverty.” It really is fascinating that he was allowed to make such an important speech on Opposite Day.
Iain Duncan Smith is a man possessed by the concept of work. That’s why he put in so many hours and Universal Credit was such a roaring success. Work, when available and suitable and accessible, is a wonderful thing, but for those unable to access it, the welfare system is a crucial safety net that keeps them from becoming totally impoverished.
Benefits absolutely should be the route out of poverty. They are the essential buffer between people and penury. Iain Duncan Smith speaks as though there is a weekly rollover on them, building and building until claimants can skip into the kind of mansion he lives in. They are not that. They are a small stipend to keep body and soul together.
Benefits shouldn’t be a route to wealth and DWP cuts have ensured that, but the notion that we should leave people in poverty astounds me. The people who rely on benefits don’t see it as a quick buck, an easy income. We cannot be the kind of society who is content to leave people destitute because they are unable to work, through long-term illness or short-term job-seeking. Without benefits, people are literally starving. People don’t go to food banks because Waitrose are out of asparagus. They go because the government has snipped away at their benefits until they have become too poor to feed themselves.
The utter hypocrisy of telling disabled people to work themselves out of poverty while cutting Access to Work is so audacious as to be almost impressive. IDS suggests that suitable jobs for disabled workers are constantly popping out of the ground like daisies, despite the fact that his own government closed 36 Remploy factories. If he wants people to work their way out of poverty, he has make it very easy to find that work.
His speech was riddled with odious little snippets digging at those who rely on his department. No one is “simply transferring taxpayers’ money” to claimants, as though every Friday he sits down with his card reader to do some online banking, sneaking into people’s accounts and spiriting their cash away to the scrounging masses. Anyone who has come within ten feet of claiming benefits knows it is far from a simple process.
He is incredulous that if a doctor says you are too sick to work, you get signed off work, as though doctors are untrained apes that somehow gained access to a pen. This is only the latest absurd episode in DWP’s ongoing deep mistrust of the medical profession, whose knowledge of their own patients is often ignored in favour of a brief assessment by an outside agency. IDS implies it is yes-no question that GPs ask; you’re either well enough to work or signed off indefinitely to leech from the state. This is simply not true. GPs can recommend their patients for differing approaches for remaining in work, be it a phased return or adapted circumstances and they do tend to have the advantage over the DWP’s agency of having actually met their patient before.
I have read enough stories of the callous ineptitude of sanctions and cuts starving the people we are meant to be protecting. A robust welfare system is the sign of a society that cares for those in need. We need to provide accessible, suitable jobs for those who can work and accessible, suitable benefits for those who can’t. That truly would be a gift that keeps giving.