The tax and benefit system is basically broken for couples with children

If you wanted to disincentivise work for the poorest, this is how you'd do it.

Last week, this IFS chart showing the effect of the child benefit withdrawal on marginal tax rates made quite an effect:

IFS Chart

I wrote about it myself, arguing that it underemphasised how bad the effect would be on families with lots of children. But the chart also plays down how bad the existing system is. The interplay between benefits, income tax and national insurance results in marginal tax rates which increase and decrease in a haphazard and unpredictable way, and frequently reach astronomic levels.

The IEA's Philip Booth looked at what he calls "the simplest possible case… of a couple with three children not claiming Housing Benefit, Council Tax Benefit or assistance with child-care costs (or a host of other ad hoc benefits that are available)." The figures were compiled in May last year, but are based on the state of affairs this May – so there may be some lags in exact amounts, but the overall picture remains accurate, at least pre-Universal Credit. Here they are charted in the same format as the IFS'

Chart Two

It's clear that for this case, the tax and benefit system is almost entirely backwards. The largest rates are paid at the bottom end of the income scale, progressively declining to 42 per cent, before finally, at the very top end, increasing to a "high" of 47 per cent.

And as Booth says, this is the simplest possible case. For someone in this situation claiming all the benefits they were entitled to, it's highly likely that at least one of the marginal rates would break 100 per cent – and that the tiny patch of 0 per cent at the very poorest end would disappear entirely.

While Bond and I agree on the problem, it's unlikely we would match minds on the solution. To me, the data above illustrates the fundamental folly of thinking that withdrawing benefits can ever really make economic sense. It is, prima facie, a strong argument for a Green-style citizen's income. Remove the conditionality from benefits and you have a system which encourages work at all income levels, rather than stamping on motivation the minute a family is no longer nominally "poor".

Raphaelle and Fabienne pose with one of their three children. 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
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In the fight against climate change, humanity has a choice of two futures

We must fight man-made climate change, says Patricia Scotland. 

So here we are at this fork in the road. On one path, the risk of a future of chaos. A new world map with miles and miles of stormy ocean where there were once islands and schools and playgrounds, businesses and life.

A globe with acre after acre of arid desert where there were once fertile mountains and valleys, green vegetation and food.

A path where our existence is defined by pandemics and migration crises, as the earth’s population tries to squeeze into the ever-reducing areas of habitable land.

In this reality, all the arguments about progress and advancement are consigned to the pages of our history, the only agenda item at international meetings is survival.

But the other fork is an alternative path. From the window of an airplane, with wings that exactly resemble a bird’s feathers, views of healthy mangrove as far as the eye can see, miles of luxurious, green canopy, interrupted by shimmering blue oceans.

Nature in all its glory and striking colours, thriving. And when it meets a city it doesn’t mind pausing for a while, because this metropolis is powered by geothermal energy, and the office buildings are made of carbon-eating concrete that behave like trees, and the mall is modelled after a termite mound. Every roof is lined with solar panels.

Two sides of the same coin. The first possibility a dystopian apocalyptic vision; the other a reality, already happening, which may just prevent and reverse the existential threat on this precious planet we call home. 

Last month, representatives of Commonwealth governments met with climate change experts, academics and businesses to launch an alternative pathway to addressing climate change, one that moves beyond adaptation, beyond mitigation, to actually reversing the human effects of climate change. 

It proposes to regenerate the environment by taking excess carbon and carbon dioxide (CO2) out of the atmosphere, where it is poisoning our planet, and putting it back in the soil where belongs.

This initiative, Regenerative Development to Reverse Climate Change, in collaboration with the Cloudburst Foundation, creates the potential for climate change to become an opportunity for innovation and sustainable, eco-friendly economic growth.

Strong support from some of the greatest environmental advocates, including Prince Charles, Mary Robinson and Anote Tong, and powerful presentations from some of the finest minds in the climate change arena, gave us the gift of possibility.

World-renowned experts like Paul Hawken, Thomas Goreau, Janine Benyus and Ben Haggard pointed out that these innovations are already happening. And it is quite simple really. For years man has watched nature and copied nature and nature has always led the way. How else did we make human flight happen if we did not copy God's own 'animal aircraft'?

We see it in other ways too, and the truth is that we already have amazing examples of biomimicry – technology that mimics nature. The eco-friendly Eastgate Centre in Zimbabwe is modelled after termite mounds. In China, the dry, barren plains of the Loess Plateau have been regenerated and restored to healthy green land; and we have similar examples of land regeneration in Rwanda.

What I am saying is that the genius of man, which created technologies that have huge benefits for human beings but detrimental effects on our environment, is the same genius we will employ to help us through mitigation and adaption, and ultimately to reverse climate change and stop global warming. But there is a fundamental problem. We have ecologists, scientists, environmentalists and academics coming up with these solutions working in silos.

So what the Commonwealth began to do last October, when we had our first climate change reversal workshop, is to bring them together. We invited 60 experts who are pioneering these approaches to climate change to Marlborough House. They explored how we can create an integrated plan on climate change reversal.

My goal is to be able to offer every Commonwealth country a package of multidisciplinary, multisectoral solutions to this multidimensional problem. Collaboration and political will are key, because we will need to weave the ideas into our curriculum, insert them in our building codes and business regulations and integrate them into our gender, agricultural and environmental policies.

But how will cash-strapped countries fund this? This is where initiatives like our Climate Finance Access Hub comes in. This programme gives countries the capacity to make successful applications for funding from the Green Fund and other climate change financing mechanisms.

We also have to listen to what the captains of industry are saying. At our meeting last month, Paul Polman, CEO of the mega-consumer goods company Unilever, stressed that when businesses consider investment they take into account sustainable development goals.

If there is no justice and peace, if there is hunger and destitution and if they are operating in cities which are not sustainable, on land that might be reclaimed by the sea or deteriorate into desert conditions, they are investing in a venture that will fail. So the regenerative approach does not have to come at the cost of economic growth. Actually, it will boost investment and development.

The Commonwealth has been at the forefront of the climate change discussion since the 1980s when it first became topical. Our milestones include the Langkawi Declaration in 1989 which commits us to protect the environment, and our leaders' summit in 2015, days before COP21, was instrumental in the landmark Paris Agreement on climate change. But the empirical evidence shows us that even at 1.5 degrees, islands will disappear into the ocean.

This November when governments convene at COP23, we will be posing the question: which pathway will you take? But this is not just a question for governments and organisations, it is a question for every single individual on this earth.

So what are we going to teach our children? More than 60 per cent of the 2.4 billion people in the Commonwealth are under the age of 30. How are we going to harness this exuberance and abundant talent and transform them into innovative solutions? How are we going to run our businesses and manage waste and energy in our homes? What path are you going to take? One that risks our future? Or one that is built on the principle that we can work with nature instead of against it to progress and develop?

Patricia Scotland is Secretary-General of the Commonwealth

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