Don't tax Amazon. Tax Amazon's shareholders

Corporations dodge tax. So go for their owners instead.

Tax avoidance is a problem which stubbornly refuses to be fixed. Even just defining our terms is problematic, with nearly every definition wide-ranging enough to cover all avoidance also including things which nobody finds objectionable.

And even if you could define it well, there's the fact that tax avoidance is, by its nature, legal. While some avoidance is truly, obviously, taking advantage of sloppy phrasing in statutes and judicial rulings, most of it exists in the grey area where it would be impossible to "tighten up" the law without also removing those deductions or exemptions which were supposed to be there in the first place. (For an example of this in action, look no further than the pasty tax debacle.)

The worst tax avoidance is undoubtedly in the corporate sector. While there are terrible examples of avoidance amongst individuals, like the New Yorker's examination of hedge-fund manager Julian Robertson's tax affairs, they are always hampered by the fact that actually offshoring personal income – the most effective form of avoidance, and the hardest to fight with the law – is tricky. People, after all, have a physical location. Some may become the infamous "non-doms", but to do that you have to spend half the year outside the country. That isn't something which can be achieved by just hiring a canny accountant.

While moralising can convince the worst corporate offenders to pay their fair share – as Starbucks finally agreed to do – it can't work every time. Some companies don't care about their image, others manage to hide their avoidance.

And so we come back to patching up the holes in the system. But with offshoring, some holes seem nearly unpatchable. For all the stirling work of campaigners like UK Uncut and Tax Research UK, the world is still no closer to agreeing on the best way to deal with multinationals which engage in creative "tax planning".

But there's one possibility: forget about them.

The reason why involves looking at the concept of tax incidence. If you accept that the only question of tax that matters is which people pay it, then corporation tax becomes a complicated issue. As a tax alters the bottom line of a company, one of two things will happen: either it will pass the costs on, or it won't. If it doesn't, then the actual people hit by the tax are the shareholders of the company, who see its profitability decline. (This is largely the intended outcome of campaigns against tax dodging.)

But if it does past the costs on, then either its customers and employees must bear the brunt, in the form of increased costs or decreased wages, or other businesses (such as suppliers or contractors) do, and the whole equation starts again.

(It is important to point out that the argument that all costs must be levied on a person at some point is not without its critics. After all, businesses have savings, assets, property and rights; who is to say that they can't be counted as people for the purpose of taxation? And the assumption at the heart of the argument is one which must be taken as faith. It's just as easy to argue, using the same logic, that the costs of all personal taxation must be borne at some point by businesses.)

Tax incidence varies business-to-business and over time. In the early 70s, when it was starting up in Washington state, Starbucks' tax incidence was almost certainly mostly upon its shareholders. Labour was expensive, coffee was a niche product, and investors in a small start-up were probably in for the long haul. Now that Starbucks has access to vast pools of low-wage labour and customers willing to pay up to $7 for a cup, it is far more likely that they will bear the brunt of much excess tax. (Although, of course, as John Elledge rightly points out, even then, it's not certain; and if there's anything we've learned from Lisa Pollack's investigation into the matter at the FT, it's that Starbucks' publicity machine holds a lot of sway within the company)

But here's the thing: if we want to tax just the shareholders of a company, we already have a way to do it. We tax dividends, and we tax capital gains. Increasing those taxes hits the people we hope would take the brunt of corporation taxes anyway.

So here's my proposal: scrap corporation tax, and whack up those two to make up the revenue gap.

There would be two big transfers inherent in this change: the first would be from shareholders in companies which pay little tax to shareholders in companies which pay a lot of tax. Since that's just another way to say "cracking down on tax avoidance", it need not upset us too much.

The other is more uncertain. By and large, international companies have international ownership. Those based in Britain with the majority of their shareholders overseas would be better off; those based overseas with the majority of their shareholders in Britain would be worse off. If the logic of the Conservatives, who have already cut corporation tax significantly, holds, we can expect that latter group to move headquarters here to take advantage of the rates; and if it doesn't, then we can expect the shareholders to sell up and buy into British companies.

There's a reason CGT and dividend taxes are so low, of course, which is to encourage investment. But since we would expect pre-tax shareholder income to go up, investment ought to still be compelling. It would just be targeted more effectively at companies which could actually make a profit, rather than those which could only make a profit if they were avoiding tax which their competitors were not.

If we can stop the biggest corporations avoiding tax, we ought to. But if trying to tax aggregations of people which can twist across country borders with ease is permanently difficult, perhaps we ought to stop trying it, and do something better instead.

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.

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Jeremy Corbyn's won a monumental victory - but it's more delicate than it looks

The need for peace on the left is overwhelming. 

It is perverse, absurd even, that in the aftermath of such a monumental victory Jeremy Corbyn must immediately talk of coalition building and compromise. Previous winners of internal struggles – most notably Tony Blair and Neil Kinnock – certainly did nothing of the sort, and Corbyn’s victory is bigger than theirs. To an extent, this is not the victory of one set of ideas but the establishment of a new party altogether – with a completely different centre of gravity and an almost completely new membership. 

That new Labour party – and core project that has built around Corbyn’s leadership – is itself a delicate network of alliances. The veterans of big social movements, from the Iraq War to the anti-austerity protests of 2011, find themselves in bed with left-leaning cosmopolitan modernisers and the reanimated remnants of the old Labour left. All parts of the coalition have reason for hubris, to believe that this new formation – complex enough as it is already, and filled with ideas and energy – can carry the Corbyn project into Number 10 with or without the co-operation of his Labour colleagues and the wider left. 

That vision is a mirage. Labour has undergone the biggest membership surge in its history, and is now the biggest left of centre party in Europe. As John Curtis has pointed out, the party’s support has maintained a high floor relative to the level of infighting and sniping over the summer, in part because of Corbyn’s strong appeal to Labour’s base. But the bleak electoral outlook, compounded by boundary changes, requires us to do more than read out lines from pre-written scripts. We must all, from a position of strength, stare death in the face.

The terms of peace with the Labour right must be negotiated carefully. There can be no negotiating away of internal democracy in the selection of candidates or national policy-setting; doing so would permanently weaken the left’s hand and allow Corbyn’s detractors in parliament to run riot. And in policy terms, Corbyn cannot compromise basic anti-austerity principles – not just because doing so would be a betrayal that would demobilise Labour’s new base, but because the project of triangulation pioneered by Ed Milliband is a tried and tested electoral failure. 

And yet the need for peace is overwhelming. At a grassroots level, Owen Smith’s support was not made up of hardened Blairites. Many of them, unlike Smith himself, really did share Corbyn’s political vision but had been ground down and convinced that, regardless of the rights and wrongs, there could be no end to Labour’s civil war without new leadership. The left’s job is to prove those people, and the politicians who claim to represent them, wrong. 

Labour’s assorted hacks – on left and right – often forget how boring and irrelevant the search for Labour’s soul looks to a wider public that long ago left behind party tribalism. The intellectual task ahead of us is about framing our politics in a comprehensible, modernising way – not creating a whole new generation of people who know Kinnock’s 1985 conference speech by rote. 

A united Labour Party, free to focus on shifting the consensus of British politics could well change history. But the grim realities of the situation may force us to go even further. To get a majority at the next election, Labour will need to gain 106 seats – a swing not achieved since 1997. 

Add to that the socially conservative affirmation of the Brexit vote, and the left’s profound confusion in terms of what to do about it, and the challenge of getting a Labour Prime Minister – regardless of who they are or what they stand for – looks like an unprecedented challenge. That unprecedented challenge could be met by an unprecedented alliance of political forces outside the Labour party as well as inside it. 

In order for Labour to win under the conditions set by the boundary review, everything has to be calibrated right. Firstly, we need an energised, mass party which advocates radical and popular policies. Secondly, we need the party not to tear itself apart every few months. And yes, finally, we may well need an honest, working arrangement between Labour, the Greens, and other progressive parties, including even the Lib Dems. 

Exactly how that alliance would be constituted – and how far it would be under the control of local parties – could be the matter of some debate. But there is every chance of it working – especially if the terms of the next general election take place in the context of the outcome of a Brexit negotiation. 

The starting point for that journey must be a recognition on the part of Corbyn’s opponents that the new Labour party is not just the overwhelming democratic choice of members, but also – with a mass activist base and a mostly popular programme – the only electable version of the Labour party in the current climate. For the left’s part, we must recognise that the coalition that has built around Corbyn is just the core of a much wider set of alliances – inside Labour and perhaps beyond.