There are problems with wealth taxes but avoidance, for once, isn't one of them

Taxing illiquid assets is, well, taxing.

Fraser Nelson, editor of the Spectator, has a column in today's Telegraph arguing that George Osborne needs to learn the lesson that "wealth taxes simply don't work". He writes:

The problems involved were fairly basic. Do you tax people’s worldwide wealth? If so, those much-needed businessmen will stay away. Do you tax only British wealth? Then people will move their investments abroad. The Treasury warned Healey that the proposed wealth tax was “political dynamite” – and not in a good way. At a time when Britain was in a desperate economic state, it risked dragging the country down further still. Healey gave up, saying he could not find any wealth tax that would be worth the political hassle.

This is disappointing, because Nelson is largely duelling with straw men here. It is indeed true that a tax on overall wealth could well lead to tax avoidance by the relatively simple tax planning strategy known as "keeping your cash in a Swiss bank account". The thing is, that isn't actually that much of a problem. After all, people avoid income tax as well, yet somehow we struggle on.

The measure for a tax is never "will everyone pay it rather than put their energy into avoiding it?", but "will enough people pay it to make it worth our while?" That's a different calculus, and one which Nelson doesn't address.

But the real disappointment is that, for all Nelson talks about the rising support for a wealth tax, he neglects to mention that most of that support is for taxing a very specific type of wealth: property. It's a shame, because that sort of tax – a "mansion tax", a "land value tax", or whatever form it takes – has its own set of problems which are under-discussed.

The important thing to note about property taxes do is that they completely fix the problems Nelson is concerned about when it comes to wealth taxes in general. You can keep money overseas, but a house in Britain is rather stuck where it is. To the extent that such a tax it increases the cost of living in Britain, it may keep wealthy foreigners away – but only those who haven't already been put off by the extraordinary cost of the sort of houses wealthy foreigners buy.

The thing is, land and property taxes aren't the golden bullet that many on the left like to think, for the key reason that houses aren't particularly liquid assets.

We've all heard the sob-story of the elderly pensioner who could be forced to sell the house he's lived in all his life to pay the land value tax (although we rarely hear it alongside its counterpart, the elderly pensioners who are being forced to moved out of houses they've lived in all their lives because of benefit cuts), but the key concern with such a tax is related to that problem.

If you are taxed, say, 20 per cent of your cash holdings, you pay that tax by handing 20 per cent of your cash to HMRC. If you are taxed on 20 per cent of the value of your land, you can't just hand a wing of your house over to the taxman. You either have to have the cash equivalent available, or sell your house.

Taken individually, that's not the end of the world – few will cry too hard if the odd landowner has to sell a few acres to pay the bill. The problem comes if the tax is set high enough that that sort of sale becomes commonplace.

If too many people end up trying to sell their mansions or land at the same time, then you're stuck with a sadly inevitable collapse in the price that land can go for. That's not just unfair – it means you would be taxing people on assets which are no longer worth what they were when you assessed them – it's also staggeringly inefficient. A well-designed tax should not encourage a fire-sale of assets.

These problems aren't insurmountable, by any means. But they do give pause for thought when considering the truely radical proposals like Peter Tatchell's plan to set the wealth tax rate at 20 per cent. Although back-of-the-envelope calculations suggest such a tax would generate truly staggering revenue, a more modest rate would be a better idea – at least at the start.

This mansion, in Kensington, London, was once the most expensive in the world. What'd the tax be? 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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No, the battle in Momentum isn't about young against old

Jon Lansman and his allies' narrative doesn't add up, argues Rida Vaquas.

If you examined the recent coverage around Momentum, you’d be forgiven for thinking that it was headed towards an acrimonious split, judging by the vitriol, paranoia and lurid accusations that have appeared online in the last couple days. You’d also be forgiven for thinking that this divide was between a Trotskyist old guard who can’t countenance new ways of working, and hip youngsters who are filled with idealism and better at memes. You might then be incredibly bemused as to how the Trotskyists Momentum was keen to deny existed over the summer have suddenly come to the brink of launching a ‘takeover bid’.

However these accounts, whatever intentions or frustrations that they are driven by, largely misrepresent the dispute within Momentum and what transpired at the now infamous National Committee meeting last Saturday.

In the first instance, ‘young people’ are by no means universally on the side of e-democracy as embodied by the MxV online platform, nor did all young people at the National Committee vote for Jon Lansman’s proposal which would make this platform the essential method of deciding Momentum policy.

Being on National Committee as the representative from Red Labour, I spoke in favour of a conference with delegates from local groups, believing this is the best way to ensure local groups are at the forefront of what we do as an organisation.

I was nineteen years old then. Unfortunately speaking and voting in favour of a delegates based conference has morphed me into a Trotskyist sectarian from the 1970s, aging me by over thirty years.

Moreover I was by no means the only young person in favour of this, Josie Runswick (LGBT+ representative) and the Scottish delegates Martyn Cook and Lauren Gilmour are all under thirty and all voted for a delegates based national conference. I say this to highlight that the caricature of an intergenerational war between the old and the new is precisely that: a caricature bearing little relation to a much more nuanced reality.

Furthermore, I believe that many people who voted for a delegates-based conference would be rather astounded to find themselves described as Trotskyists. I do not deny that there are Trotskyists on National Committee, nor do I deny that Trotskyists supported a delegates-based conference – that is an open position of theirs. What I do object is a characterisation of the 32 delegates who voted for a delegates-based conference as Trotskyists, or at best, gullible fools who’ve been taken in.  Many regional delegates were mandated by the people to whom they are accountable to support a national conference based on this democratic model, following broad and free political discussion within their regions. As thrilling as it might be to fantasise about a sinister plot driven by the shadow emperors of the hard Left against all that it is sensible and moderate in Momentum, the truth is rather more mundane. Jon Lansman and his supporters failed to convince people in local groups of the merits of his e-democracy proposal, and as a result lost the vote.

I do not think that Momentum is doomed to fail on account of the particular details of our internal structures, providing that there is democracy, accountability and grassroots participation embedded into it. I do not think Momentum is doomed to fail the moment Jon Lansman, however much respect I have for him, loses a vote. I do not even think Momentum is doomed to fail if Trotskyists are involved, or even win sometimes, if they make their case openly and convince others of their ideas in the structures available.

The existential threat that Momentum faces is none of these things, it is the propagation of a toxic and polarised political culture based on cliques and personal loyalties as opposed to genuine political discussion on how we can transform labour movement and transform society. It is a political culture in which those opposed to you in the organisation are treated as alien invaders hell-bent on destroying it, even when we’ve worked together to build it up, and we worked together before the Corbyn moment even happened. It is a political culture where members drag others through the mud, using the rhetoric of the Right that’s been used to attack all of us, on social and national media and lend their tacit support to witch hunts that saw thousands of Labour members and supporters barred from voting in the summer. It is ultimately a political culture in which our trust in each other and capacity to work together on is irreparably eroded.

We have a tremendous task facing us: to fight for a socialist alternative in a global context where far right populism is rapidly accruing victories; to fight for the Labour Party to win governmental power; to fight for a world in which working class people have the power to collectively change their lives and change the societies we live in. In short: there is an urgent need to get our act together. This will not be accomplished by sniping about ‘saboteurs’ but by debating the kind of politics we want clearly and openly, and then coming together to campaign from a grassroots level upwards.

Rida Vaquas is Red Labour Representative on Momentum National Committee.